Physical Constants of Inorganic Compounds

EtOH 95 Ammonium chromic sulfate

dodecahydrate NH4Cr(SO4)2 ∙ 12H2O 10022-47-6 478.343 blue-viol cry 94 dec 1.72 s H2O; sl EtOH

96 Ammonium cobalt(II) phosphate CoNH4PO4 14590-13-7 171.943 red-viol powder (hyd)

i H2O; s acid

97 Ammonium cobalt(II) phosphate monohydrate

CoNH4PO4 ∙ H2O 16827-96-6 189.959 red-purp orth plates

dec 450 s acid

98 Ammonium cobalt(II) sulfate hexahydrate

(NH4)2Co(SO4)2 ∙ 6H2O 13586-38-4 395.227 red monocl prisms 1.90 s H2O; i EtOH

99 Ammonium copper(II) chloride CuCl2 ∙ 2NH4Cl 10060-13-6* 241.435 yel hyg orth cry s H2O 100 Ammonium copper(II) chloride

dihydrate CuCl2 ∙ 2NH4Cl ∙ 2H2O 10060-13-6 277.465 blue-grn tetr cry 110 dec 1.993 s H2O, EtOH

101 Ammonium cyanide NH4CN 12211-52-8 44.056 col tetr cry dec 1.10 vs H2O 102 Ammonium dichromate (NH4)2Cr2O7 7789-09-5 252.065 oran-red monocl

cry; hyg 180 dec 2.155 35.620

103 Ammonium dihydrogen arsenate NH4H2AsO4 13462-93-6 158.975 tetr cry 300 dec 2.311 52.7 25

104 Ammonium dihydrogen phosphate NH4H2PO4 7722-76-1 115.026 wh tetr cry 190 1.80 40.4 25 sl EtOH; i ace

105 Ammonium O,Odiethyldithiophosphate

(C2H5O)2P(S)SNH4 1068-22-0 203.264 cry 165

106 Ammonium dithiocarbamate NH4NH2CSS 513-74-6 110.202 yel ortho cry 99 dec 1.45 s H2O 107 Ammonium ferricyanide trihydrate (NH4)3Fe(CN)6 ∙ 3H2O 14221-48-8* 320.110 red cry s H2O; i EtOH 108 Ammonium ferrocyanide trihydrate (NH4)4Fe(CN)6 ∙ 3H2O 14481-29-9* 338.149 yel cry dec s H2O; i EtOH 109 Ammonium fluoride NH4F 12125-01-8 37.037 wh hex cry; hyg 238 1.015 83.5

25 sl EtOH 110 Ammonium fluorosulfonate NH4SO3F 13446-08-7 117.100 col needles 245 s H2O, EtOH, MeOH 111 Ammonium formate NH4CHO2 540-69-2 63.057 hyg cry 116 1.27 143

20 s EtOH 112 Ammonium heptafluorotantalate (NH4)2TaF7 12022-02-5 350.014 hyg cry 113 Ammonium hexabromoosmate(IV) (NH4)2OsBr6 24598-62-7 705.73 small blk cubes sl H2O; s glycerol; i

EtOH 114 Ammonium hexabromoplatinate(IV) (NH4)2PtBr6 17363-02-9 710.585 powder 145 dec 0.59

115 Ammonium hexachloroiridate(III) (NH4)3IrCl6 15752-05-3 459.050 grn pow 116 Ammonium hexachloroiridate(IV) (NH4)2IrCl6 16940-92-4 441.012 blk cry powder dec 2.856 1.09

117 Ammonium hexachloroosmate(IV) (NH4)2OsCl6 12125-08-5 439.03 red cry or powder subl 2.93 s H2O, EtOH 118 Ammonium

hexachloropalladate(IV) (NH4)2PdCl6 19168-23-1 355.22 red-brn hyg cry dec 2.418

119 Ammonium hexachloroplatinate(IV) (NH4)2PtCl6 16919-58-7 443.879 red-oran cub cry 380 dec 3.065 0.5 20 i EtOH

120 Ammonium hexachlororuthenate(IV)

(NH4)2RuCl6 18746-63-9 349.87 red cry

121 Ammonium hexafluoroaluminate (NH4)3AlF6 7784-19-2 195.087 cub cry 1.78 s H2O 122 Ammonium hexafluorogallate (NH4)3GaF6 14639-94-2 237.828 col cub cry >200 dec 2.10 123 Ammonium hexafluorogermanate (NH4)2GeF6 16962-47-3 222.71 wh cry 380 subl 2.564 s H2O; i EtOH 124 Ammonium hexafluorophosphate NH4PF6 16941-11-0 163.003 wh cub cry 58 dec 2.180 vs H2O; s ace,

EtOH, MeOH 125 Ammonium hexafluorosilicate (NH4)2SiF6 16919-19-0 178.153 wh cub or trig cry dec 2.011 22.7

25 i EtOH, ace 126 Ammonium hexafluorotitanate (NH4)2TiF 16962-40-6 197.934 wh solid s H2O

127 Ammonium hexafluorozirconate(IV) (NH4)2ZrF6 16919-31-6 241.291 wh hex cry 1.154 s H2O 128 Ammonium hydrogen arsenate (NH4)2HAsO4 7784-44-3 176.004 wh powder 1.99 s H2O 129 Ammonium hydrogen carbonate NH4HCO3 1066-33-7 79.056 col or wh prisms 107 dec 1.586 24.8

25 i EtOH, bz 130 Ammonium hydrogen citrate (NH4)2HC6H5O7 3012-65-5 226.184 col cry 1.48 vs H2O; sl EtOH 131 Ammonium hydrogen fluoride NH4HF2 1341-49-7 57.044 wh orth cry 125 240 dec 1.50 60.2

132 Ammonium hydrogen malate NH4C4H5O5 5972-71-4 151.118 orth cry 160 1.15 s H2O; sl EtOH 133 Ammonium hydrogen oxalate

monohydrate NH4HC2O4 ∙ H2O 5972-72-5* 125.081 col rhomb cry dec 1.56 sl H2O, EtOH

134 Ammonium hydrogen phosphate (NH4)2HPO4 7783-28-0 132.055 wh cry 155 dec 1.619 69.5 25 i EtOH, ace

135 Ammonium hydrogen phosphite monohydrate

(NH4)2HPO3 ∙ H2O 51503-61-8 134.071 hyg cry s H2O

136 Ammonium hydrogen selenate NH4HSeO4 10294-60-7 162.01 rhom cry dec 2.162 137 Ammonium hydrogen sulfate NH4HSO4 7803-63-6 115.110 wh hyg cry 147 1.78 100

20 i EtOH, ace, py 138 Ammonium hydrogen sulfide NH4HS 12124-99-1 51.112 wh tetr or orth cry dec 1.17 128

0 sl ace; i bz, eth 139 Ammonium hydrogen sulfite NH4HSO3 10192-30-0 99.110 col cry dec 2.03 71.8

140 Ammonium hydrogen tartrate NH4HC4H4O6 3095-65-6 167.117 wh cry 1.68 sl H2O; s alk; i EtOH

141 Ammonium hydroxide NH4OH 1336-21-6 35.046 exists only in soln 142 Ammonium hypophosphite NH4H2PO2 7803-65-8 83.028 wh hyg cry dec vs H2O; sl EtOH; i

ace 143 Ammonium iodate NH4IO3 13446-09-8 192.941 wh powder 150 3.3 3.84

144 Ammonium iodide NH4I 12027-06-4 144.943 wh tetr cry; hyg 551 dec 405 sp 2.514 178 25 sl EtOH, MeOH

145 Ammonium iron(II) sulfate hexahydrate

(NH4)2Fe(SO4)2 ∙ 6H2O 7783-85-9 392.139 blue-grn monocl cry

≈100 dec 1.86 s H2O; i EtOH

146 Ammonium iron(III) chromate NH4Fe(CrO4)2 7789-08-4 305.871 red powder i H2O 147 Ammonium iron(III) oxalate

trihydrate (NH4)3Fe(C2O4)3 ∙ 3H2O 13268-42-3 428.063 grn monocl cry;

hyg ≈160 dec 1.780 vs H2O; i EtOH

148 Ammonium iron(III) sulfate dodecahydrate

NH4Fe(SO4)2 ∙ 12H2O 7783-83-7 482.192 col to viol cry ≈37 1.71 vs H2O; i EtOH

149 Ammonium lactate NH4C3H5O3 52003-58-4 107.108 col cry 92 s H2O, EtOH; sl MeOH; i ace, eth

150 Ammonium magnesium chloride hexahydrate

NH4MgCl3 ∙ 6H2O 39733-35-2 256.794 hyg cry dec 100 1.46 1720 s H2O

151 Ammonium mercuric chloride dihydrate

(NH4)2HgCl4 ∙ 2H2O 33445-15-7* 414.51 powder s H2O; sl EtOH

152 Ammonium metatungstate hexahydrate

(NH4)6W7O24 ∙ 6H2O 12028-48-7 1887.19 wh cry s H2O; i EtOH

153 Ammonium metavanadate NH4VO3 7803-55-6 116.979 wh-yel cry 200 dec 2.326 4.8 20

154 Ammonium molybdate(VI) tetrahydrate

(NH4)6Mo7O24 ∙ 4H2O 12054-85-2 1235.86 col or grn-yel cry 90 dec 2.498 43 i EtOH

155 Ammonium dimolybdate (NH4)2Mo2O7 27546-07-2 339.95 cry s H2O 156 Ammonium molybdophosphate (NH4)3PO4 ∙ 12MoO3 12026-66-3 1876.35 grn or yel cry dec 0.0220 sl H2O; s alk 157 Ammonium nitrate NH4NO3 6484-52-2 80.043 wh hyg cry; orth 169.7 dec 200-

260 1.72 21325 sl MeOH

158 Ammonium nitrite NH4NO2 13446-48-5 64.044 wh-yel cry 60 exp 1.69 221 25 i eth

159 Ammonium nitroferricyanide (NH4)2Fe(CN)5NO 14402-70-1 252.016 red-brn cry s H2O, EtOH 160 Ammonium oleate NH4C18H33O2 544-60-5 299.493 yel-brn paste 21 s H2O; sl ace 161 Ammonium oxalate (NH4)2C2O4 1113-38-8 124.096 col sol 1.5 5.20

162 Ammonium oxalate monohydrate (NH4)2C2O4 ∙ H2O 6009-70-7 142.110 wh orth cry dec 1.50 5.2025 sl EtOH 163 Ammonium palmitate NH4C15H31CO2 593-26-0 273.455 yel-wh powder 22 s H2O; sl bz, xyl; i

ace, EtOH, ctc 164 Ammonium pentaborate

tetrahydrate NH4B5O8 ∙ 4H2O 12007-89-5 272.150 wh cry 7.0318

165 Ammonium pentachlororhodate(III) monohydrate

(NH4)2RhCl5 ∙ H2O 63771-33-5 334.262 red cry dec 210

166 Ammonium pentachlorozincate (NH4)3ZnCl5 14639-98-6 296.789 hyg orth cry 1.81 vs H2O 167 Ammonium perchlorate NH4ClO4 7790-98-9 117.490 wh orth cry dec, exp 1.95 24.5

25 s MeOH; sl EtOH, ace; i eth

168 Ammonium permanganate NH4MnO4 13446-10-1 136.975 purp rhomb cry 70 dec 2.22 7.9 15

169 Ammonium peroxydisulfate (NH4)2S2O8 7727-54-0 228.202 monocl cry or wh powder

dec 1.982 83.525

170 Ammonium perrhenate NH4ReO4 13598-65-7 268.244 col powder 3.97 6.23 20

171 Ammonium phosphate trihydrate (NH4)3PO4 ∙ 3H2O 10361-65-6* 203.133 wh prisms 25.025 i ace 172 Ammonium phosphomolybdate

monohydrate (NH4)3PO4 ∙ 12MoO3 ∙

H2O 54723-94-3 1894.36 yel cry or powder dec 0.02

173 Ammonium phosphotungstate dihydrate

(NH4)3PO4 ∙ 12WO3 ∙ 2H2O

1311-90-6 2967.18 cry powder sl H2O

174 Ammonium picrate NH4C6H2N3O7 131-74-8 246.135 yel orth cry exp 1.72 sl H2O 175 Ammonium polysulfide (NH4)2Sx 9080-17-5 yel unstab soln reac acids 176 Ammonium salicylate NH4C7H5O3 528-94-9 155.151 wh cry powder vs H2O; s EtOH

177 Ammonium selenate (NH4)2SeO4 7783-21-3 179.04 wh monocl cry dec 2.194 117 25 i EtOH, ace

178 Ammonium selenite (NH4)2SeO3 7783-19-9 163.04 wh or red hyg cry dec 121 25

179 Ammonium stearate NH4C18H35O2 1002-89-7 301.509 yel-wh powder 22 0.89 sl H2O, bz; s EtOH, MeOH; i ace

180 Ammonium sulfamate NH4NH2SO3 7773-06-0 114.124 wh hyg cry 131 160 dec vs H2O; sl EtOH 181 Ammonium sulfate (NH4)2SO4 7783-20-2 132.140 wh or brn orth cry 280 dec 1.77 76.4

25 i EtOH, ace 182 Ammonium sulfide (NH4)2S 12135-76-1 68.142 yel-oran cry ≈0 dec s H2O, EtOH, alk 183 Ammonium sulfite (NH4)2SO3 17026-44-7 116.140 wh hyg cry 64.2

184 Ammonium sulfite monohydrate (NH4)2SO3 ∙ H2O 7783-11-1 134.155 col cry dec 1.41 64.225 i EtOH, ace 185 Ammonium tartrate (NH4)2C4H4O6 3164-29-2 184.147 wh cry dec 1.601 s H2O 186 Ammonium tellurate (NH4)2TeO4 13453-06-0 227.68 wh powder dec 3.024 187 Ammonium tetraborate tetrahydrate (NH4)2B4O7 ∙ 4H2O 12228-87-4 263.377 wh tetr cry dec 87 vs H2O; s HNO3 188 Ammonium tetrachloroaluminate NH4AlCl4 7784-14-7 186.833 wh hyg solid 304 s H2O, eth 189 Ammonium tetrachloropalladate(II) (NH4)2PdCl4 13820-40-1 284.31 grn cry or red-brn

pow s H2O

190 Ammonium tetrachloroplatinate(II) (NH4)2PtCl4 13820-41-2 372.973 red cry dec 2.936 s H2O; i EtOH 191 Ammonium tetrachlorozincate (NH4)2ZnCl4 14639-97-5 243.298 wh orth plates;

hyg 150 dec 1.879 vs H2O

192 Ammonium tetrafluoroantimonate NH4SbF4 14972-90-8 215.793 col cry s H2O 193 Ammonium tetrafluoroborate NH4BF4 13826-83-0 104.844 wh powder; orth 487 dec 1.871 25

194 Ammonium tetrathiocyanodiammo nochromate(III) monohydrate

NH4[Cr(NH3)2(SCN)4] ∙ H2O

13573-16-5 354.440 red cry 270 dec s H2O, EtOH, ace; i bz

195 Ammonium tetrathiomolybdate (NH4)2MoS4 15060-55-6 260.28 red cry 100 dec vs H2O 196 Ammonium tetrathiotungstate (NH4)2WS4 13862-78-7 348.18 oran cry dec 2.71 s H2O 197 Ammonium tetrathiovandate (NH4)3VS4 14693-56-2 233.317 dark viol cry 198 Ammonium thiocyanate NH4SCN 1762-95-4 76.121 col hyg cry ≈149 dec 1.30 181

25 vs EtOH; s ace; i chl

199 Ammonium thiosulfate (NH4)2S2O3 7783-18-8 148.205 wh cry 150 dec 1.678 vs H2O; i EtOH, eth 200 Ammonium titanium oxalate

monohydrate (NH4)2TiO(C2O4)2 ∙ H2O 10580-03-7 293.996 hyg cry vs H2O

201 Ammonium tungstate(VI) (NH4)10W12O41 11120-25-5 3042.44 cry powder 2.3 s H2O; i EtOH 202 Ammonium tungstate(VI)

pentahydrate (NH4)10W12O41 ∙ 5H2O 1311-93-9 3132.52 cry pow or plates 2.3 vs H2O; i EtOH

203 Ammonium uranate(VI) (NH4)2U2O7 7783-22-4 624.131 red-yel amorp powder

i H2O, alk; s acid

204 Ammonium uranium fluoride UO2(NH4)3F5 18433-40-4 419.135 grn-yel monocl cry

s H2O; i EtOH

205 Ammonium valerate NH4C4H9CO2 42739-38-8 119.163 hyg cry 108 vs H2O, EtOH; s eth 206 Antimony (gray) Sb 7440-36-0 121.760 silv metal; hex 630.628 1587 6.68 i dil acid 207 Antimony (black) Sb 7440-36-0 121.760 blk amorp solid trans gray 0 208 Stibine SbH3 7803-52-3 124.784 col gas; flam -88 -17 5.100 g/L sl H2O; s EtOH 209 Trimethylstibine Sb(CH3)3 594-10-5 166.863 col flam liq -62 81 1.52 210 Pentamethylstibine Sb(CH3)5 15120-50-0 196.933 col hyg liq -19 127 reac H2O 211 Tetramethyldistibine [Sb(CH3)2]2 41422-43-9 303.658 yel flam liq or red

solid 17

212 Antimony arsenide SbAs 12322-34-8 196.682 hex cry ≈680 6.0 213 Antimony potassium tartrate

trihydrate K2(SbC4H2O6)2 ∙ 3H2O 28300-74-5 667.873 col cry 2.6 sl H2O

214 Antimony(III) acetate Sb(C2H3O2)3 3643-76-3 298.891 wh pow 215 Antimony(III) bromide SbBr3 7789-61-9 361.472 yel orth cry; hyg 97 288 4.35 reac H2O; s ace, bz,

chl 216 Antimony(III) chloride SbCl3 10025-91-9 228.119 col orth cry; hyg 73.4 220.3 3.14 987

25 s acid, EtOH, bz, ace

217 Antimony(III) fluoride SbF3 7783-56-4 178.755 wh orth cry; hyg 287 376 4.38 492 25

218 Antimony(III) iodide SbI3 7790-44-5 502.473 red rhomb cry 171 400 4.92 reac H2O; s EtOH, ace; i ctc

219 Antimony(III) iodide sulfide SbIS 13816-38-1 280.729 dark red prisms or needles

220 Antimony(III) oxide (senarmontite) Sb2O3 1309-64-4 291.518 col cub cry 570 trans 1425 5.58 sl H2O; i os 221 Antimony(III) oxide (valentinite) Sb2O3 1309-64-4 291.518 wh orth cry 655 1425 5.7 sl H2O; i os 222 Antimony(III) oxychloride SbOCl 7791-08-4 173.212 wh momo cry 170 dec reac H2O; i EtOH,

eth 223 Antimony(III) phosphate SbPO4 12036-46-3 216.731 cry pow reac H2O 224 Antimony(III) potassium oxalate

trihydrate K3Sb(C2O4)3 ∙ 3H2O 5965-33-3* 557.158 cry pow s H2O

225 Antimony(III) selenide Sb2Se3 1315-05-5 480.40 grn orth cry 611 5.81 sl H2O 226 Antimony(III) sulfate Sb2(SO4)3 7446-32-4 531.708 wh cry powder;

hyg dec 3.62 sl H2O

227 Antimony(III) sulfide Sb2S3 1345-04-6 339.715 gray-blk orth cry 550 4.562 i H2O; s conc HCl 228 Antimony(III) telluride SbTe 1327-50-0 626.32 gray cry 620 6.5

229 Antimony(III,V) oxide Sb2O4 1332-81-6 307.518 yel orth cry 6.64 230 Antimony(V) chloride SbCl5 7647-18-9 299.025 col or yel liq 4 140 dec 2.34 reac H2O; s chl, ctc 231 Antimony(V) fluoride SbF5 7783-70-2 216.752 hyg visc liq 8.3 141 3.10 reac H2O 232 Antimony(V) dichlorotrifluoride SbCl2F3 7791-16-4 249.661 visc liq reac H2O 233 Antimony(V) oxide Sb2O5 1314-60-9 323.517 yel powder; cub dec 3.78 0.3

234 Antimony(V) sulfide Sb2S5 1315-04-4 403.845 oran-yel powder 75 dec 4.120 i H2O; s acid, alk 235 Argon Ar 7440-37-1 39.948 col gas -189.34 -185.847 1.633 g/L sl H2O 236 Arsenic (gray) As 7440-38-2 74.922 gray metal; rhomb 817 616 sp 5.75 i H2O 237 Arsenic (black) As 7440-38-2 74.922 blk amorp solid trans gray As

270 4.9

238 Arsenic (yellow) As 7440-38-2 74.922 soft yel cub cry trans gray As 358

1.97 s CS2

239 Arsine AsH3 7784-42-1 77.946 col gas -116 -62.5 3.186 g/L sl H2O 240 Diarsine As2H4 15942-63-9 153.875 unstab liq ≈100 241 Arsenic acid H3AsO4 7778-39-4 141.944 exists only in soln 242 Arsenic acid hemihydrate H3AsO4 ∙ 0.5H2O 7778-39-4* 150.951 wh hyg cry 36.1 2.5 vs H2O, EtOH 243 Arsenious acid H3AsO3 13464-58-9 125.944 exists only in soln 244 Arsenic diiodide As2I4 13770-56-4 657.461 red cry 137 reac H2O; s os 245 Arsenic hemiselenide As2Se 1303-35-1 228.80 blk cry i H2O, os; dec acid,

alk 246 Arsenic sulfide As4S4 12279-90-2 427.946 red monocl cry 320 565 3.5 i H2O; sl bz; s alk 247 Arsenic(III) bromide AsBr3 7784-33-0 314.634 col or yel orth cry;

hyg 31.1 221 3.40 reac H2O; s hc, ctc;

vs eth, bz 248 Arsenic(III) chloride AsCl3 7784-34-1 181.281 col liq -16 130 2.150 reac H2O; vs chl,

ctc, eth 249 Arsenic(III) ethoxide As(C2H5O)3 3141-12-6 210.103 liq 166 1.21 250 Arsenic(III) fluoride AsF3 7784-35-2 131.917 col liq -5.9 57.13 2.7 reac H2O; s EtOH,

eth, bz 251 Arsenic(III) iodide AsI3 7784-45-4 455.635 red hex cry 141 424 4.73 sl H2O, EtOH, eth; s

bz. tol 252 Arsenic(III) oxide (arsenolite) As2O3 1327-53-3 197.841 wh cub cry 274 460 3.86 2.05

253 Arsenic(III) oxide (claudetite) As2O3 1327-53-3 197.841 wh monocl cry 314 460 3.74 2.05 25 s dil acid, alk; i

EtOH 254 Arsenic(III) selenide As2Se3 1303-36-2 386.72 brn-blk solid 260 4.75 i H2O; s alk 255 Arsenic(III) sulfide As2S3 1303-33-9 246.038 yel-oran monocl

cry 312 707 3.46 i H2O; s alk

256 Arsenic(III) telluride As2Te3 12044-54-1 532.64 blk monocl cry 621 6.50 257 Arsenic(V) chloride AsCl5 22441-45-8 252.187 stab at low temp ≈-50 dec 258 Arsenic(V) fluoride AsF5 7784-36-3 169.914 col gas -79.8 -52.8 6.945 g/L reac H2O; s EtOH,

bz, eth 259 Arsenic(V) oxide As2O5 1303-28-2 229.840 wh amorp powder 315 4.32 65.8

20 vs EtOH 260 Arsenic(V) selenide As2Se5 1303-37-3 544.64 blk solid dec i H2O, EtOH, eth; s

alk 261 Arsenic(V) sulfide As2S5 1303-34-0 310.168 brn-yel amorp

solid dec i H2O; s alk

262 Astatine At 7440-68-8 210 cry 302 s HNO3, os 263 Barium Ba 7440-39-3 137.327 silv-yel metal; cub 727 1845 3.62 reac H2O; sl EtOH 264 Barium acetate Ba(C2H3O2)2 543-80-6 255.416 wh powder 2.47 79.2

265 Barium acetate monohydrate Ba(C2H3O2)2 ∙ H2O 5908-64-5 273.431 wh cry 110 dec 2.19 79.225 sl EtOH 266 Barium aluminate BaAl2O4 12004-04-5 255.288 hex cry 1827 267 Barium aluminide BaAl4 12672-79-6 245.253 metallic solid 1097 268 Barium azide Ba(N3)2 18810-58-7 221.367 monocl cry; exp ≈120 dec 2.936 17.3

20 sl EtOH; i eth 269 Barium bismuthate BaBiO3 12785-50-1 394.305 bronze cry 1040 dec 270 Barium bromate Ba(BrO3)2 13967-90-3 393.131 col monocl cry 0.79

25 s ace 271 Barium bromate monohydrate Ba(BrO3)2 ∙ H2O 10326-26-8 411.147 wh monocl cry 260 dec 3.99 0.83125 i EtOH 272 Barium bromide BaBr2 10553-31-8 297.135 wh orth cry 857 1835 4.781 100

273 Barium bromide dihydrate BaBr2 ∙ 2H2O 7791-28-8 333.166 wh cry 75 dec 3.7 10025 s MeOH; i EtOH, ace, diox

274 Barium calcium tungstate Ba2CaWO6 15552-14-4 594.57 cub cry 1420 275 Barium carbide BaC2 50813-65-5 161.348 gray tetr cry dec 3.74 reac H2O 276 Barium carbonate BaCO3 513-77-9 197.336 wh orth cry 1380 dec; 1555

(high pres.) 4.308 0.001420 s acid

277 Barium chlorate Ba(ClO3)2 13477-00-4 304.229 wh cry 414 37.9 25 sl EtOH, ace

278 Barium chlorate monohydrate Ba(ClO3)2 ∙ H2O 10294-38-9 322.245 wh monocl cry 120 dec 3.179 37.925 s acid; sl EtOH, ace 279 Barium chloride BaCl2 10361-37-2 208.233 wh orth cry; hyg 961 1560 3.9 37.0

280 Barium chloride dihydrate BaCl2 ∙ 2H2O 10326-27-9 244.264 wh monocl cry ≈120 dec 3.097 37.025 i EtOH 281 Barium chloride fluoride BaClF 13718-55-3 191.778 wh cry 282 Barium chromate(V) Ba3(CrO4)2 12345-14-1 643.968 grn-blk hex cry 5.25 s H2O 283 Barium chromate(VI) BaCrO4 10294-40-3 253.321 yel orth cry 1380 4.50 0.00026

284 Barium citrate monohydrate Ba3(C6H5O7)2 ∙ H2O 512-25-4* 808.195 gray-wh cry s H2O, acid 285 Barium copper yttrium oxide BaCuY2O5 82642-06-6 458.682 grn cry; not

superconductor 286 Barium copper yttrium oxide Ba2Cu3YO7 109064-29-1 666.194 blk solid; HT

superconductor 287 Barium copper yttrium oxide Ba2Cu4YO8 114104-80-2 745.739 HT

superconductor 288 Barium copper yttrium oxide Ba4Cu7Y2O15 124365-83-9 1411.933 HT

superconductor 289 Barium cyanide Ba(CN)2 542-62-1 189.361 wh cry powder vs H2O; s EtOH 290 Barium dichromate dihydrate BaCr2O7 ∙ 2H2O 10031-16-0 389.346 brn-red needles dec reac H2O 291 Barium disilicate BaSi2O5 12650-28-1 273.495 wh orth cry 1420 3.70 292 Barium dithionate dihydrate BaS2O6 ∙ 2H2O 13845-17-5 333.484 wh cry 140 dec 4.54 22.120 sl EtOH 293 Barium ferrite BaFe12O19 11138-11-7 1111.456 magnetic solid 294 Barium ferrocyanide hexahydrate Ba2Fe(CN)6 ∙ 6H2O 13821-06-2* 594.694 yel monocl cry 80 dec i H2O, EtOH 295 Barium fluoride BaF2 7787-32-8 175.324 wh cub cry 1368 2260 4.893 0.161

296 Barium formate Ba(CHO2)2 541-43-5 227.362 cry 3.21 s H2O; i EtOH 297 Barium hexaboride BaB6 12046-08-1 202.193 blk cub cry 2070 4.36 i H2O; s acid; i

EtOH 298 Barium hexafluorogermanate BaGeF6 323.96 wh cry ≈665 4.56 299 Barium hexafluorosilicate BaSiF6 17125-80-3 279.403 wh orth needles 300 dec 4.29 i H2O, EtOH; sl acid 300 Barium hydride BaH2 13477-09-3 139.343 gray orth cry 1200 4.16 reac H2O 301 Barium hydrogen phosphate BaHPO4 10048-98-3 233.306 wh cry powder 400 dec 4.16 0.015

20 s dil acid 302 Barium hydrosulfide Ba(HS)2 25417-81-6 203.473 yel hyg cry s H2O 303 Barium hydrosulfide tetrahydrate Ba(HS)2 ∙ 4H2O 12230-74-9 275.534 yel rhomb cry 50 dec s H2O 304 Barium hydroxide Ba(OH)2 17194-00-2 171.342 wh powder 408 4.91

305 Barium hydroxide monohydrate Ba(OH)2 ∙ H2O 22326-55-2 189.357 wh powder 3.743 4.9125 s acid 306 Barium hydroxide octahydrate Ba(OH)2 ∙ 8H2O 12230-71-6 315.464 wh monocl cry 78 dec 2.18 4.9125 307 Barium hypophosphite

monohydrate Ba(H2PO2)2 ∙ H2O 14871-79-5* 285.320 monocl plates 2.90 s H2O; i EtOH

308 Barium iodate Ba(IO3)2 10567-69-8 487.132 wh cry powder 476 dec 5.23 0.0396 25

309 Barium iodate monohydrate Ba(IO3)2 ∙ H2O 7787-34-0 505.148 cry 130 dec 5.00 0.039625 s acid; i EtOH 310 Barium iodide BaI2 13718-50-8 391.136 wh orth cry 711 5.15 221

311 Barium iodide dihydrate BaI2 ∙ 2H2O 7787-33-9 427.167 col cry 740 dec 5.0 22125 s EtOH, ace 312 Barium manganate(VI) BaMnO4 7787-35-1 256.263 grn-gray hyg cry 4.85 0.00041

313 Barium metaborate monohydrate Ba(BO2)2 ∙ H2O 26124-86-7 240.962 wh powder >900 3.3 sl H2O 314 Barium metaborate dihydrate Ba(BO2)2 ∙ 2H2O 23436-05-7 258.977 wh prec dec 1.325 sl H2O 315 Barium metaphosphate Ba(PO3)2 13466-20-1 295.271 wh powder 1560 i H2O; sl acid 316 Barium metasilicate BaSiO3 13255-26-0 213.411 col rhomb powder 1605 4.40 i H2O; s acid 317 Barium molybdate BaMoO4 7787-37-3 297.27 wh powder 1450 4.975 0.0021

318 Barium niobate Ba(NbO3)2 12009-14-2 419.136 yel orth cry 1455 5.44 i H2O 319 Barium nitrate Ba(NO3)2 10022-31-8 261.336 wh cub cry 590 3.24 10.3

25 sl EtOH, ace 320 Barium nitride Ba3N2 12047-79-9 439.994 yel-brn cry >500 dec 4.78 reac H2O 321 Barium nitrite Ba(NO2)2 13465-94-6 229.338 col hex cry 267 3.234 79.5

322 Barium nitrite monohydrate Ba(NO2)2 ∙ H2O 7787-38-4 247.353 yel-wh hex cry 217 dec 3.18 79.525 i EtOH 323 Barium orthovanadate Ba3(VO4)2 39416-30-3 641.859 hex cry 707 5.14 324 Barium oxalate BaC2O4 516-02-9 225.346 wh powder 400 dec 2.658 0.0075 325 Barium oxalate monohydrate BaC2O4 ∙ H2O 13463-22-4 243.361 wh cry powder 2.66 0.007520 s acid 326 Barium oxide BaO 1304-28-5 153.326 wh-yel powder;

cub and hex 1973 5.72(cub) 1.520 s dil acid, EtOH; i

ace 327 Barium 2,4-pentanedioate

octahydrate Ba(CH3COCHCOCH3)2 ∙

8H2O 12084-29-6* 479.665 col hyg cry 320 (anh)

328 Barium perchlorate Ba(ClO4)2 13465-95-7 336.228 col hex cry 505 3.20 312 25 vs EtOH

329 Barium perchlorate trihydrate Ba(ClO4)2 ∙ 3H2O 10294-39-0 390.274 col cry 2.74 31225 s MeOH; sl EtOH, ace; i eth

330 Barium permanganate Ba(MnO4)2 7787-36-2 375.198 brn-viol cry 200 dec 3.77 62.5 20 reac EtOH

331 Barium peroxide BaO2 1304-29-6 169.326 gray-wh tetr cry 450 dec 4.96 0.091 20 reac dil acid

332 Barium plumbate BaPbO3 12047-25-5 392.5 orth cry 333 Barium potassium chromate BaK2(CrO4)2 27133-66-0 447.511 yel hex cry 3.63 vs H2O 334 Barium pyrophosphate Ba2P2O7 13466-21-2 448.597 wh powder 1430 3.9 0.0088

20 s acid 335 Barium selenate BaSeO4 7787-41-9 280.29 wh rhomb cry dec 4.75 0.015

336 Barium selenide BaSe 1304-39-8 216.29 cub cry powder 1780 5.02 reac H2O 337 Barium selenite BaSeO3 13718-59-7 264.29 solid i H2O 338 Barium silicide BaSi2 1304-40-1 193.498 gray lumps 1180 reac H2O 339 Barium sodium niobate Ba2Na(NbO3)5 12323-03-4 1002.167 wh orth cry 1437 5.40 i H2O 340 Barium stannate BaSnO3 12009-18-6 304.035 cub cry 7.24 sl H2O 341 Barium stannate trihydrate BaSnO3 ∙ 3H2O 12009-18-6* 358.081 wh cry powder sl H2O; s acid 342 Barium stearate Ba(C18H35O2)2 6865-35-6 704.266 wh powder 160 1.145 i H2O, EtOH

343 Barium strontium niobate BaSr(NbO3)4 37185-09-4 788.57 pale yel solid 344 Barium strontium tungstate Ba2SrWO6 14871-56-8 642.11 hyg pow 1400 345 Barium sulfate BaSO4 7727-43-7 233.390 wh orth cry 1580 4.49 0.00031

20 i EtOH 346 Barium sulfide BaS 21109-95-5 169.392 col cub cry or gray

powder 2227 4.3 8.9425

347 Barium sulfite BaSO3 7787-39-5 217.390 wh monocl cry dec 4.44 0.0011 25 i EtOH

348 Barium tartrate BaC4H4O6 5908-81-6 285.398 wh cry 2.98 s H2O; i EtOH 349 Barium tetracyanoplatinate(II)

tetrahydrate BaPt(CN)4 ∙ 4H2O 13755-32-3 508.543 yel powder or cry 2.076 sl H2O; i EtOH

350 Barium tetraiodomercurate(II) BaHgI4 10048-99-4 845.54 yel-red hyg cry vs H2O, EtOH 351 Barium thiocyanate Ba(SCN)2 2092-17-3 253.491 hyg cry 167

25 s ace, MeOH, EtOH 352 Barium thiocyanate dihydrate Ba(SCN)2 ∙ 2H2O 2092-17-3* 289.522 hyg wh cry 16725 s EtOH 353 Barium thiocyanate trihydrate Ba(SCN)2 ∙ 3H2O 68016-36-4 307.537 wh needles; hyg 2.286 16725 s EtOH 354 Barium thiosulfate BaS2O3 35112-53-9 249.455 wh cry powder 220 dec 0.2

20 i EtOH 355 Barium thiosulfate monohydrate BaS2O3 ∙ H2O 7787-40-8 267.471 wh cry powder dec 3.5 0.2 i EtOH 356 Barium titanate (BaTiO3) BaTiO3 12047-27-7 233.192 wh tetr cry 1625 6.02 i H2O 357 Barium titanate (BaTi2O5) BaTi2O5 12009-27-7 313.058 wh solid 358 Barium titanate (BaTi4O9) BaTi4O9 12009-31-3 472.790 wh solid 359 Barium titanium silicate BaTi(SiO3)3 15491-35-7 413.446 rhom blue-pur cry 360 Barium tungstate BaWO4 7787-42-0 385.17 wh tetr cry 1475 1730 5.04 0.0016

361 Barium uranium oxide BaU2O7 10380-31-1 725.381 oran-yel powder i H2O; s acid 362 Barium yttrium tungsten oxide Ba3Y3WO9 37265-86-4 1006.53 cub cry 1470 363 Barium zirconate BaZrO3 12009-21-1 276.549 gray-wh cub cry 2500 5.52 i H2O, alk; sl acid 364 Barium zirconium silicate BaO ∙ ZrO2 ∙ SiO2 336.634 wh pow i H2O, alk; sl acid;

s HF 365 Berkelium (α form) Bk 7440-40-6 247 hex cry trans to · 930 14.78 366 Berkelium (β form) Bk 7440-40-6 247 cub cry 986 13.25 367 Beryllium Be 7440-41-7 9.012 hex cry 1287 2468 1.85 s acid, alk 368 Beryllium acetate Be(C2H3O2)2 543-81-7 127.101 wh cry 60 dec i H2O, EtOH 369 Beryllium basic acetate Be4O(C2H3O2)6 1332-52-1 406.312 wh cry 285 330 1.25 i H2O; s eth, os 370 Beryllium aluminate BeAl2O4 12004-06-7 126.973 orth cry 3.65 371 Beryllium aluminum metasilicate Be3Al2(SiO3)6 1302-52-9 537.502 col or grn-yel cry;

hex 2.64

372 Beryllium boride (BeB2) BeB2 12228-40-9 30.634 refrac solid >1970 373 Beryllium boride (BeB6) BeB6 12429-94-6 73.878 red solid 2070 374 Beryllium boride (Be2B) Be2B 12536-51-5 28.835 pink cry 1520 375 Beryllium boride (Be4B) Be4B 12536-52-6 46.860 refrac solid 1160 376 Beryllium borohydride Be(BH4)2 17440-85-6 36.682 solid 125 dec subl reac H2O 377 Beryllium bromide BeBr2 7787-46-4 168.820 orth cry; hyg 508 473 sp 3.465 vs H2O; s EtOH, pyr 378 Beryllium carbide Be2C 506-66-1 30.035 red cub cry 2127 1.90 reac H2O 379 Beryllium carbonate tetrahydrate BeCO3 ∙ 4H2O 60883-64-9 93.085 wh solid 100 dec 0.360 380 Beryllium basic carbonate Be3(OH)2(CO3)2 66104-24-3 181.069 wh powder i H2O; s acid, alk 381 Beryllium chloride BeCl2 7787-47-5 79.918 wh-yel orth cry;

hyg 415 482 1.90 71.525 s EtOH, eth, py; i

bz, tol 382 Beryllium fluoride BeF2 7787-49-7 47.009 tetr cry or gl; hyg 552 1283 2.1 vs H2O; sl EtOH 383 Beryllium formate Be(CHO2)2 1111-71-3 99.047 powder >250 dec reac H2O; i os 384 Beryllium hydride BeH2 7787-52-2 11.028 wh amorp solid 250 dec 0.65 reac H2O; i eth, tol 385 Beryllium hydrogen phosphate BeHPO4 13598-15-7 104.991 cry i H2O 386 Beryllium hydroxide (α) Be(OH)2 13327-32-7 43.027 wh powder or cry ≈200 dec 1.92 sl H2O, alk; s acid 387 Beryllium hydroxide (β) Be(OH)2 13327-32-7 43.027 col tetr cry dec 138 i H2O; s, acid, alk 388 Beryllium iodide BeI2 7787-53-3 262.821 hyg needles 480 590 4.32 reac H2O; s EtOH 389 Beryllium nitrate trihydrate Be(NO3)2 ∙ 3H2O 13597-99-4 187.068 yel-wh hyg cry ≈30 dec 10720 s EtOH 390 Beryllium nitride Be3N2 1304-54-7 55.050 gray refrac cry;

cub 2200 2.71 reac acid, alk

391 Beryllium oxalate trihydrate BeC2O4 ∙ 3H2O 15771-43-4 151.077 rhom cry dec 320 vs H2O 392 Beryllium oxide BeO 1304-56-9 25.011 wh hex cry 2578 3.01 i H2O; sl acid, alk 393 Beryllium 2,4-pentanedioate Be(CH3COCHCOCH3)2 10210-64-7 207.228 monocl cry

powder 108 270 1.168 i H2O; vs EtOH, eth

394 Beryllium perchlorate tetrahydrate Be(ClO4)2 ∙ 4H2O 7787-48-6 279.975 hyg cry 250 dec 19825 395 Beryllium selenate tetrahydrate BeSeO4 ∙ 4H2O 10039-31-3 224.03 orth cry 100 dec 2.03 vs H2O 396 Beryllium sulfate BeSO4 13510-49-1 105.075 col tetr cry; hyg 1127 2.5 41.3

397 Beryllium sulfate dihydrate BeSO4 ∙ 2H2O 14215-00-0 141.105 col cry dec 92 398 Beryllium sulfate tetrahydrate BeSO4 ∙ 4H2O 7787-56-6 177.136 col tetr cry ≈100 dec 1.71 41.325 i EtOH 399 Beryllium sulfide BeS 13598-22-6 41.077 col cub cry dec 2.36 reac hot H2O 400 Bismuth Bi 7440-69-9 208.980 gray-wh soft metal 271.406 1564 9.79 s acid 401 Bismuth acetate Bi(C2H3O2)3 22306-37-2 386.111 col tablets 250 i H2O 402 Bismuth subacetate BiOC2H3O2 5142-76-7 284.023 thin cry plates i H2O; s dil acid 403 Bismuth antimonide BiSb 12323-19-2 330.740 cry 475

404 Bismuth arsenate BiAsO4 13702-38-0 347.900 wh monocl cry 7.14 i H2O; sl conc HNO3

405 Bismuth basic carbonate (BiO)2CO3 5892-10-4 509.969 wh powder 6.86 i H2O; s acid 406 Bismuth basic dichromate Bi2O3 ∙ 2CrO3 665.948 red-oran amorp

pow i H2O; s acid, alk

407 Bismuth citrate BiC6H5O7 813-93-4 398.080 wh powder 3.458 i H2O; sl EtOH 408 Bismuth hydride BiH3 18288-22-7 212.004 col gas; unstab -67 ≈17 8.665 g/L 409 Bismuth hydroxide Bi(OH)3 10361-43-0 260.002 wh-yel amorp

powder 4.962 i H2O; s acid

410 Bismuth germanium oxide 2Bi2O3 ∙ 3GeO2 12233-56-6 1245.84 wh pow 1044 411 Bismuth hexafluoro-2,4-

pentanedioate Bi(CF3COCHCOCF3)3 142617-56-9 830.132 powder 96

412 Bismuth molybdate Bi2MoO6 13565-96-3 609.90 yel solid 9.32 413 Bismuth molybdate Bi2(MoO4)3 51898-99-8 897.77 monocl cry 5.95 414 Bismuth nitrate pentahydrate Bi(NO3)3 ∙ 5H2O 10035-06-0 485.071 col tricl cry; hyg ≈75 dec 2.83 reac H2O; s ace; i

EtOH 415 Bismuth subnitrate Bi5O(OH)9(NO3)4 1304-85-4 1461.987 hyg cry powder 260 dec 4.928 i H2O, EtOH; s dil

acid 416 Bismuth oleate Bi(C18H33O2)3 52951-38-9 1053.340 soft yel-brn solid i H2O; s eth; sl bz 417 Bismuth oxalate Bi2(C2O4)3 6591-55-5 682.018 wh powder i H2O, EtOH; s dil

acid 418 Bismuth oxide Bi2O3 1304-76-3 465.959 yel monocl cry or

powder 825 1890 8.9 i H2O; s acid

419 Bismuth tetroxide Bi2O4 12048-50-9 481.959 red-oran powder 305 5.6 reac H2O 420 Bismuth oxybromide BiOBr 7787-57-7 304.883 col tetr cry 560 dec 8.08 i H2O, EtOH; s acid 421 Bismuth oxychloride BiOCl 7787-59-9 260.432 wh tetr cry 575 dec 7.72 i H2O 422 Bismuth oxyiodide BiOI 7787-63-5 351.883 red tetr cry 300 dec 7.92 i H2O, EtOH, chl; s

HCl 423 Bismuth oxynitrate BiONO3 10361-46-3 286.985 wh powder 260 dec 4.93 i H2O, EtOH; s acid 424 Bismuth phosphate BiPO4 10049-01-1 303.951 monocl cry 6.32 sl H2O, dil acid; i

EtOH 425 Bismuth potassium iodide BiK4I7 41944-01-8 1253.704 red cry reac H2O; s alk

iodide soln 426 Bismuth selenide Bi2Se3 12068-69-8 654.84 blk hex cry 710 dec 7.5 i H2O 427 Bismuth stannate pentahydrate Bi2(SnO3)3 ∙ 5H2O 12777-45-6 1008.162 wh cry i H2O 428 Bismuth sulfate Bi2(SO4)3 7787-68-0 706.149 wh needles or

powder 405 dec 5.08 reac H2O, EtOH

429 Bismuth sulfide Bi2S3 1345-07-9 514.156 blk-brn orth cry 850 6.78 i H2O; s acid 430 Bismuth telluride Bi2Te3 1304-82-1 800.76 gray hex plates 580 7.74 i H2O; s EtOH 431 Bismuth tribromide BiBr3 7787-58-8 448.692 yel cub cry 219 462 5.72 reac H2O; s dil

acid, ace; i EtOH 432 Bismuth trichloride BiCl3 7787-60-2 315.339 col or yel cub cry;

hyg 234 441 4.75 reac H2O; s acid,

EtOH, ace 433 Bismuth trifluoride BiF3 7787-61-3 265.975 wh-gray cub cry 727 900 8.3 i H2O 434 Bismuth pentafluoride BiF5 7787-62-4 303.972 wh tetr needles;

hyg 151.4 230 5.55 reac H2O

435 Bismuth triiodide BiI3 7787-64-6 589.693 blk-brn hex cry 408.6 542 5.778 0.00078 20 s EtOH

436 Bismuth trimethyl Bi(CH3)3 593-91-9 254.083 col flam liq -86 110 2.3 437 Bismuth titanate Bi4(TiO4)3 12048-51-0 1171.516 wh orth cry 7.85 438 Bismuth tungstate Bi2(WO4)3 13595-87-4 1161.47 wh powder 439 Bismuth vanadate BiVO4 14059-33-7 323.920 orth cry trans 500 6.25 i H2O; s acid 440 Bismuth zirconate 2Bi2O3 ∙ 3ZrO2 37306-42-6 1301.587 wh pow 441 Boron B 7440-42-8 10.81 blk rhomb cry 2077 4000 2.34 i H2O 442 Diborane B2H6 19287-45-7 27.670 col gas; flam -164.85 -92.49 1.131 g/L reac H2O 443 Tetraborane(10) B4H10 18283-93-7 53.323 unstab col gas -120 18 2.180 g/L reac H2O 444 Pentaborane(9) B5H9 19624-22-7 63.126 flam col liq -46.74 60.10 0.60 reac hot H2O 445 Pentaborane(11) B5H11 18433-84-6 65.142 col liq; unstab -122 65 reac H2O 446 Hexaborane(10) B6H10 23777-80-2 74.945 col liq -62.3 108 dec 0.67 reac hot H2O 447 Hexaborane(12) B6H12 12008-19-4 76.961 col liq -82.3 ≈85 reac H2O 448 Nonaborane(15) B9H15 19465-30-6 112.418 col liq 2.7 449 Decaborane(14) B10H14 17702-41-9 122.221 wh orth cry 98.78 213 0.94 sl H2O; s EtOH, bz,

CS2, ctc 450 Decaborane(16) B10H16 71595-75-0 124.237 col cry ≈81 dec 170 subl 451 Dodecaborane(16) B12H16 89711-39-7 145.859 col cry 65 s bz, hx 452 Tridecaborane(19) B13H19 43093-20-5 159.694 yel cry 44 s hx, CH2Cl2 453 Tetradecaborane(18) B14H18 55606-55-8 169.497 visc yel oil dec 100 s cyhex, CS2 454 Hexadecaborane(20) B16H20 28265-11-4 193.135 col cry ≈110 s ctc, cyhex, thf 455 Octadecaborane(22) B18H22 11071-61-7 216.773 yel cry 180 s os 456 Tetrabromodiborane B2Br4 14355-29-4 341.238 col liq ≈1 dec 20

458 Tetrafluorodiborane B2F4 13965-73-6 97.616 col gas; flam -56 -34.0 3.990 g/L reac H2O 459 Borane carbonyl BH3CO 13205-44-2 41.845 col gas -137 -64 1.710 g/L reac H2O 460 Borazine B3N3H6 6569-51-3 80.501 col liq -58 53 0.824 reac H2O 461 Boric acid H3BO3 10043-35-3 61.833 col tricl cry 170.9 1.5 5.80

25 sl EtOH 462 Metaboric acid (α form) HBO2 13460-50-9 43.818 col orth cry; hyg 176 1.784 s H2O 463 Metaboric acid (β form) HBO2 13460-50-9 43.818 col monocl cry;

hyg 201 2.045 s H2O

464 Metaboric acid (γ form) HBO2 13460-50-9 43.818 col cub cry 236 2.487 s H2O 465 Tetrafluoroboric acid HBF4 16872-11-0 87.813 col liq 130 dec ≈1.8 vs H2O, EtOH 466 Boron arsenide BAs 12005-69-5 85.733 brn cub cry 1100 dec 5.22 467 Boron carbide B4C 12069-32-8 55.255 hard blk cry 2350 >3500 2.50 i H2O, acid 468 Boron nitride BN 10043-11-5 24.818 wh powder; hex or

cub cry 2967 2.18 i H2O, acid

469 Boron oxide B2O3 1303-86-2 69.620 col gl or hex cry; hyg

450 2.55 2.220 s EtOH

470 Boron phosphide BP 20205-91-8 41.785 red cub cry or powder

1125 dec reac H2O, acid

471 Boron silicide B6Si 12008-29-6 92.952 blk cry 1980 472 Boron sulfide B2S3 12007-33-9 117.817 yel amorp solid 563 ≈1.7 473 Boron tribromide BBr3 10294-33-4 250.523 col liq; hyg -46 91.3 2.6 reac H2O, EtOH 474 Boron trichloride BCl3 10294-34-5 117.170 col liq or gas -107.3 12.5 4.789 g/L reac H2O, EtOH 475 Boron trifluoride BF3 7637-07-2 67.806 col gas -126.8 -99.9 2.772 g/L s H2O 476 Boron trifluoride etherate BF3(C2H5)2O 109-63-7 141.927 liq -60.4 125.5 1.125

25 reac H2O; vs eth, EtOH

477 Boron triiodide BI3 13517-10-7 391.524 wh needles 49.7 209.5 3.35 i H2O 478 Bromine Br2 7726-95-6 159.808 red liq -7.2 58.8 3.1028 sl H2O 479 Bromic acid HBrO3 7789-31-3 128.910 stab only in aq

soln s H2O

480 Hypobromous acid HOBr 13517-11-8 96.911 exists aq soln s H2O 481 Bromine dioxide BrO2 21255-83-4 111.903 unstab yel cry ≈0 dec 482 Bromine monoxide Br2O 21308-80-5 175.807 unstab brn solid -17.5 dec 483 Dibromine trioxide Br2O3 53809-75-9 207.806 oran needles (LT) dec -40 484 Dibromine pentoxide Br2O5 58572-43-3 239.805 col cry (low temp) -20 dec 485 Bromine azide BrN3 13973-87-0 121.924 red cry; exp ≈45 exp 486 Bromine chloride BrCl 13863-41-7 115.357 dark red liq (<5¯C) -66 5 dec reac H2O; s eth,

CS2 487 Bromine fluoride BrF 13863-59-7 98.902 unstab red-brn

gas ≈-33 ≈20 dec 4.043 g/L

488 Bromine trifluoride BrF3 7787-71-5 136.899 col hyg liq 8.77 125.8 2.803 reac H2O 489 Bromine pentafluoride BrF5 7789-30-2 174.896 col liq -60.5 41.3 2.460 reac H2O (exp) 490 Bromosyl trifluoride BrOF3 61519-37-7 152.898 col liq -5 dec >20 reac H2O 491 Bromyl fluoride BrO2F 22585-64-4 130.901 col liq -9 dec 55 reac H2O 492 Perbromyl fluoride BrO3F 37265-91-1 146.900 col gas -110 dec 20 reac H2O 493 Cadmium Cd 7440-43-9 112.411 silv-wh metal 321.069 767 8.69 i H2O; reac acid 494 Cadmium acetate Cd(C2H3O2)2 543-90-8 230.500 col cry 255 2.34 s H2O, EtOH 495 Cadmium acetate dihydrate Cd(C2H3O2)2 ∙ 2H2O 5743-04-4 266.529 wh cry 130 dec 2.01 vs H2O; s EtOH 496 Cadmium antimonide CdSb 12014-29-8 234.171 orth cry 456 6.92 497 Cadmium arsenide Cd3As2 12006-15-4 487.076 gray tetr cry 721 6.25 498 Cadmium azide Cd(N3)2 14215-29-3 196.451 yel-wh orth cry;

exp exp 3.24

499 Cadmium borotungstate octadecahydrate

Cd5(BW12O40) ∙ 18H2O 1306-26-9 3743.20 yel cry vs H2O

500 Cadmium bromide CdBr2 7789-42-6 272.219 wh-yel hex cry; hyg

568 863 5.19 11525 sl ace, eth

501 Cadmium bromide tetrahydrate CdBr2 ∙ 4H2O 13464-92-1 344.281 wh-yel cry 11525 s ace, EtOH 502 Cadmium carbonate CdCO3 513-78-0 172.420 wh hex cry 500 dec 5.026 i H2O; s acid 503 Cadmium chlorate dihydrate Cd(ClO3)2 ∙ 2H2O 22750-54-5* 315.344 col hyg cry 80 dec 2.28 2.640 504 Cadmium chloride CdCl2 10108-64-2 183.317 rhom cry; hyg 568 964 4.08 120

25 s ace; sl EtOH; i eth 505 Cadmium chloride monohydrate CdCl2 ∙ H2O 34330-64-8 201.332 wh cry 12025 506 Cadmium chloride

hemipentahydrate CdCl2 ∙ 2.5H2O 7790-78-5 228.354 wh rhomb leaflets 3.327 12025 s ace

507 Cadmium chromate CdCrO4 14312-00-6 228.405 yel orth cry 4.5 i H2O 508 Cadmium cyanide Cd(CN)2 542-83-6 164.445 wh cub cry 2.23 1.7

509 Cadmium dichromate monohydrate CdCr2O7 ∙ H2O 69239-51-6 346.414 oran solid s H2O 510 Cadmium 2-ethylhexanoate Cd(C8H15O2)2 2420-98-6 398.818 powder 511 Cadmium fluoride CdF2 7790-79-6 150.408 cub cry 1075 1750 6.33 4.36

25 s acid; i EtOH 512 Cadmium hydroxide Cd(OH)2 21041-95-2 146.426 wh trig or hex cry 130 dec 4.79 0.00015

20 s dil acid 513 Cadmium iodate Cd(IO3)2 7790-81-0 462.216 wh powder 6.48 0.091

514 Cadmium iodide CdI2 7790-80-9 366.220 col hex flakes 388 744 5.64 86.2 25 vs H2O; s EtOH,

eth, ace 515 Cadmium metasilicate CdSiO3 13477-19-5 188.495 grn monocl cry 1252 5.10 516 Cadmium molybdate CdMoO4 13972-68-4 272.35 col tetr cry ≈900 dec 5.4 i H2O; s acid 517 Cadmium niobate Cd2Nb2O7 12187-14-3 522.631 cub cry ≈1410 6.28 i H2O 518 Cadmium nitrate Cd(NO3)2 10325-94-7 236.420 wh cub cry; hyg 360 3.6 156

25 s EtOH 519 Cadmium nitrate tetrahydrate Cd(NO3)2 ∙ 4H2O 10022-68-1 308.482 col orth cry; hyg 59.5 2.45 15625 s EtOH, ace 520 Cadmium oxalate CdC2O4 814-88-0 200.430 wh solid 3.32 0.0060

521 Cadmium oxalate trihydrate CdC2O4 ∙ 3H2O 20712-42-9 254.476 wh amorp powder 340 dec 0.006025 i EtOH; s dil acid 522 Cadmium oxide CdO 1306-19-0 128.410 brn cub cry 1559 sp 8.15 i H2O; s dil acid 523 Cadmium 2,4-pentanedioate Cd(CH3COCHCOCH3)2 14689-45-3 310.627 wh solid or red cry 235 524 Cadmium perchlorate hexahydrate Cd(ClO4)2 ∙ 6H2O 10326-28-0 419.404 wh hex cry 2.37 191.525 525 Cadmium phosphate Cd3(PO4)2 13477-17-3 527.176 powder ≈1500 i H2O 526 Cadmium phosphide Cd3P2 12014-28-7 399.181 grn tetr needles 700 5.96 s dil HCl 527 Cadmium selenate dihydrate CdSeO4 ∙ 2H2O 10060-09-0 291.40 orth cry 100 dec 3.62 70.525 528 Cadmium selenide CdSe 1306-24-7 191.37 wh cub cry 1240 5.81 i H2O 529 Cadmium selenite CdSeO3 13814-59-0 239.37 col prisms 530 Cadmium stearate Cd(C18H35O2)2 2223-93-0 679.350 wh cry pow 134 1.21 531 Cadmium succinate CdC4H4O4 141-00-4 228.484 wh pow or needles 0.37

40 sl H2O; i EtOH 532 Cadmium sulfate CdSO4 10124-36-4 208.474 col orth cry 1000 4.69 76.7

25 i EtOH 533 Cadmium sulfate monohydrate CdSO4 ∙ H2O 7790-84-3 226.489 monocl cry 105 3.79 76.725 534 Cadmium sulfate octahydrate CdSO4 ∙ 8H2O 15244-35-6 352.596 col monocl cry 40 dec 3.08 76.725 535 Cadmium sulfide CdS 1306-23-6 144.476 yel-oran hex cry ≈1480 4.826 i H2O; s acid 536 Cadmium sulfite CdSO3 13477-23-1 192.474 col prisms dec ≈400 0.05

20 sl H2O 537 Cadmium telluride CdTe 1306-25-8 240.01 brn-blk cub cry 1042 6.2 i H2O, dil acid 538 Cadmium tellurite CdTeO3 15851-44-2 288.01 col monocl cry 695 dec 1050 539 Cadmium tetrafluoroborate Cd(BF4)2 14486-19-2 286.020 col hyg liq 1.6 vs H2O, EtOH 540 Cadmium titanate CdTiO3 12014-14-1 208.276 orth cry 6.5 541 Cadmium tungstate CdWO4 7790-85-4 360.25 wh monocl cry 8.0 i H2O, acid; s

NH4OH 542 Calcium Ca 7440-70-2 40.078 silv-wh metal 842 1484 1.54 reac H2O; i bz 543 Calcium acetate Ca(C2H3O2)2 62-54-4 158.167 wh hyg cry 160 dec 1.50 s H2O; sl EtOH 544 Calcium acetate monohydrate Ca(C2H3O2)2 ∙ H2O 5743-26-0 176.182 wh needles or

powder ≈150 dec s H2O; sl EtOH

545 Calcium acetate dihydrate Ca(C2H3O2)2 ∙ 2H2O 14977-17-4 194.196 long col needles s H2O 546 Calcium aluminate CaAl2O4 12042-68-1 158.039 wh monocl cry 1605 2.98 reac H2O 547 Calcium aluminate (β form) Ca3Al2O6 12042-78-3 270.193 wh cub cry; refr 1535 3.04 i H2O 548 Calcium arsenate Ca3(AsO4)2 7778-44-1 398.072 wh powder dec 3.6 0.0036

20 s dil acid 549 Calcium arsenite (1:1) CaAsO3 52740-16-6 162.998 wh powder sl H2O; s acid 550 Calcium borate hexahydrate CaB4O7 ∙ 6H2O 13701-64-9* 303.409 wh cry pow 1162 (anh) 551 Calcium boride CaB6 12007-99-7 104.944 refrac solid 2235 2.49 552 Calcium bromate Ca(BrO3)2 10102-75-7 295.882 wh pow 180 553 Calcium bromate monohydrate Ca(BrO3)2 ∙ H2O 10102-75-7* 313.898 wh monocl cry dec 180 3.33 vs H2O 554 Calcium bromide CaBr2 7789-41-5 199.886 rhom cry; hyg 742 1815 3.38 156

25 s EtOH, ace 555 Calcium bromide dihydrate CaBr2 ∙ 2H2O 22208-73-7 235.917 wh cry pow vs H2O 556 Calcium bromide hexahydrate CaBr2 ∙ 6H2O 13477-28-6 307.977 wh hyg powder 38 dec 2.29 15625 557 Calcium carbide CaC2 75-20-7 64.099 gray-blk orth cry 2300 2.22 reac H2O 558 Calcium carbonate (aragonite) CaCO3 471-34-1 100.087 wh orth cry or

powder trans calcite

450 2.930 0.0006620 s dil acid

559 Calcium carbonate (calcite) CaCO3 471-34-1 100.087 wh hex cry or powder

dec 700-900 2.710 0.0006620 s dil acid

560 Calcium carbonate (vaterite) CaCO3 471-34-1 100.087 col hex cry 2.653 0.0011 25 s dil acid

561 Calcium chlorate Ca(ClO3)2 10137-74-3 206.980 wh cry 340 197 25

562 Calcium chlorate dihydrate Ca(ClO3)2 ∙ 2H2O 10035-05-9 243.011 wh monocl cry; hyg

100 dec 2.711 19725 s EtOH

563 Calcium chloride CaCl2 10043-52-4 110.984 wh cub cry or powder; hyg

775 1935 2.15 81.325 vs EtOH

564 Calcium chloride monohydrate CaCl2 ∙ H2O 13477-29-7 128.999 wh hyg cry 260 dec 2.24 81.325 s EtOH 565 Calcium chloride dihydrate CaCl2 ∙ 2H2O 10035-04-8 147.015 hyg flakes or

powder 175 dec 1.85 81.325 vs EtOH

566 Calcium chloride tetrahydrate CaCl2 ∙ 4H2O 25094-02-4 183.046 col tricl cry 1.83 567 Calcium chloride hexahydrate CaCl2 ∙ 6H2O 7774-34-7 219.075 wh hex cry; hyg 30 dec 1.71 81.325 568 Calcium chlorite Ca(ClO2)2 14674-72-7 174.982 wh cub cry 2.71 reac H2O 569 Calcium chromate CaCrO4 13765-19-0 156.072 yel cry 1000 dec sl H2O; i EtOH, ace 570 Calcium chromate dihydrate CaCrO4 ∙ 2H2O 10060-08-9 192.102 yel orth cry dec 200 2.50 13.220 s dil acids 571 Calcium citrate tetrahydrate Ca3(C6H5O7)2 ∙ 4H2O 5785-44-4 570.494 wh needles or pow dec 100 0.09623 i eth 572 Calcium cyanamide CaCN2 156-62-7 80.102 col hex cry ≈1340 subl 2.29 reac H2O 573 Calcium cyanide Ca(CN)2 592-01-8 92.112 wh rhomb cry; hyg s H2O, EtOH

574 Calcium dichromate trihydrate CaCr2O7 ∙ 3H2O 14307-33-6* 310.112 red-oran cry 100 dec 2.37 vs H2O; reac EtOH; i eth, ctc

575 Calcium dihydrogen phosphate monohydrate

Ca(H2PO4)2 ∙ H2O 10031-30-8 252.068 col tricl plates 100 dec 2.220 sl H2O; s dil acid

576 Calcium 2-ethylhexanoate Ca(C8H15O2)2 136-51-6 326.485 powder 577 Calcium ferrocyanide

dodecahydrate Ca2Fe(CN)6 ∙ 12H2O 508.289 yel tricl cry dec 1.68 8725 vs H2O; i EtOH

578 Calcium fluoride CaF2 7789-75-5 78.075 wh cub cry or powder

1418 2500 3.18 0.001625 sl acid

579 Calcium fluorophosphate Ca5(PO4)3F 12015-73-5 504.302 col hex cry 1650 3.201 i H2O 580 Calcium fluorophosphate dihydrate CaPO3F ∙ 2H2O 37809-19-1 174.079 col monocl cry 0.4227 i os 581 Calcium formate Ca(CHO2)2 544-17-2 130.113 orth cry 300 dec 2.02 16.6

20 i EtOH 582 Calcium hexaborate pentahydrate 2CaO ∙ 3B2O3 ∙ 5H2O 12291-65-5 411.091 col monocl cry dec 375 (exp) 2.42 125 sl acid 583 Calcium hexafluoro-2,4-

pentanedioate Ca(CF3COCHCOCF3)2 121012-90-6 454.180 powder 135

584 Calcium hexafluorosilicate dihydrate

CaSiF6 ∙ 2H2O 16925-39-6 218.185 col tetr cry 2.25 0.5220 i ace; reac hot H2O

585 Calcium hydride CaH2 7789-78-8 42.094 gray orth cry or powder

1000 1.7 reac H2O, EtOH

586 Calcium hydrogen phosphate CaHPO4 7757-93-9 136.057 wh tricl cry dec 2.92 0.02 25 i EtOH

587 Calcium hydrogen phosphate dihydrate

CaHPO4 ∙ 2H2O 7789-77-7 172.088 monocl cry ≈100 dec 2.31 0.0225 i EtOH; s dil acid

588 Calcium hydrogen sulfite CaH2(SO3)2 13780-03-5 202.220 1.06 s H2O 589 Calcium hydrosulfide hexahydrate Ca(HS)2 ∙ 6H2O 214.315 col cry dec s H2O, EtOH 590 Calcium hydroxide Ca(OH)2 1305-62-0 74.093 soft hex cry ≈2.2 0.160

20 s acid 591 Calcium hydroxide phosphate Ca5(OH)(PO4)3 12167-74-7 502.311 col hex cry dec >900 3.155 i H2O 592 Calcium hypochlorite Ca(OCl)2 7778-54-3 142.983 powder 100 2.350 593 Calcium hypophosphite Ca(H2PO2)2 7789-79-9 170.055 wh monocl cry 300 dec s H2O; i EtOH 594 Calcium iodate Ca(IO3)2 7789-80-2 389.883 wh monocl cry 4.52 0.306

25 s HNO3; i EtOH 595 Calcium iodide CaI2 10102-68-8 293.887 hyg hex cry 783 1100 3.96 215

25 s MeOH, EtOH, ace; i eth

596 Calcium iodide hexahydrate CaI2 ∙ 6H2O 71626-98-7 401.978 wh hex needles or powder

42 dec 2.55 21525 vs EtOH

597 Calcium metaborate Ca(BO2)2 13701-64-9 125.698 powder 0.13 20

598 Calcium metasilicate CaSiO3 1344-95-2 116.162 wh monocl cry 1540 2.92 i H2O 599 Calcium molybdate CaMoO4 7789-82-4 200.02 wh tetr cry 1520 4.35 0.0011

20 i EtOH; s conc acid 600 Calcium nitrate Ca(NO3)2 10124-37-5 164.087 wh cub cry; hyg 561 2.5 144

25 s EtOH, MeOH, ace 601 Calcium nitrate tetrahydrate Ca(NO3)2 ∙ 4H2O 13477-34-4 236.149 wh cry ≈40 dec 1.82 14425 s EtOH, ace 602 Calcium nitride Ca3N2 12013-82-0 148.247 red-brn cub cry 1195 2.67 s H2O, acid; i EtOH 603 Calcium nitrite Ca(NO2)2 13780-06-8 132.089 wh-yel hex cry;

hyg 392 2.23 94.625 sl EtOH

604 Calcium nitrite monohydrate Ca(NO2)2 ∙ H2O 10031-34-2 150.104 col or yel cry dec 100 vs H2O; sl EtOH 605 Calcium oleate Ca(C18H33O2)2 142-17-6 602.985 pale yel solid dec 140 0.04

25 sl H2O; s bz; i EtOH, ace, eth

606 Calcium oxalate CaC2O4 563-72-4 128.097 wh cry powder 2.2 0.00061 20

607 Calcium oxalate monohydrate CaC2O4 ∙ H2O 5794-28-5 146.112 cub cry 200 dec 2.2 0.0006120 s dil acid 608 Calcium oxide CaO 1305-78-8 56.077 gray-wh cub cry 2613 3.34 reac H2O; s acid 609 Calcium oxide silicate Ca3OSiO4 12168-85-3 228.317 refrac solid 2150 610 Calcium palmitate Ca(C16H31O2)2 542-42-7 550.910 wh-yel pow dec 155 i H2O, EtOH, eth,

ace; sl bz 611 Calcium perborate heptahydrate Ca(BO3)2 ∙ 7H2O 283.803 gray-wh pow s H2O, acid 612 Calcium 2,4-pentanedioate Ca(CH3COCHCOCH3)2 19372-44-2 238.294 cry dec 175 613 Calcium perchlorate Ca(ClO4)2 13477-36-6 238.979 wh cry 270 dec 2.65 188

25 s EtOH, MeOH 614 Calcium perchlorate tetrahydrate Ca(ClO4)2 ∙ 4H2O 15627-86-8 311.041 wh cry vs H2O 615 Calcium permanganate Ca(MnO4)2 10118-76-0 277.949 purp hyg cry 2.4 331

20 reac EtOH 616 Calcium peroxide CaO2 1305-79-9 72.077 wh-yel tetr cry;

hyg ≈200 dec 2.9 sl H2O; s acid

617 Calcium phosphate Ca3(PO4)2 7758-87-4 310.177 wh amorp powder 1670 3.14 0.00012 20 i EtOH; s dil acid

618 Calcium phosphide Ca3P2 1305-99-3 182.182 red-brn hyg cry ≈1600 2.51 reac H2O; i EtOH, eth

619 Calcium phosphonate monohydrate

CaHPO3 ∙ H2O 25232-60-4 138.073 col monocl cry dec 150 sl H2O; i EtOH

620 Calcium plumbate Ca2PbO4 12013-69-3 351.4 oran-brn orth cry dec 5.71 i H2O; s acid 621 Calcium propanoate Ca(C3H5O2)2 4075-81-4 186.219 monocl cry,

powder s H2O; sl MeOH,

EtOH; i ace, bz 622 Calcium pyrophosphate Ca2P2O7 7790-76-3 254.099 wh powder 1353 3.09 i H2O; s dil acid 623 Calcium selenate dihydrate CaSeO4 ∙ 2H2O 7790-74-1 219.07 wh monocl cry 2.75 8.318 624 Calcium selenide CaSe 1305-84-6 119.04 wh-brn cub cry 1400 dec 3.8 reac H2O 625 Calcium silicide (CaSi) CaSi 12013-55-7 68.164 orth cry 1324 2.39

626 Calcium silicide (CaSi2) CaSi2 12013-56-8 96.249 gray hex cry 1040 2.50 i cold H2O; reac hot H2O; s acid

627 Calcium stannate trihydrate CaSnO3 ∙ 3H2O 12013-46-6* 260.832 wh cry pow dec ≈350 i H2O 628 Calcium stearate Ca(C18H35O2)2 1592-23-0 607.017 granular powder 180 i H2O, EtOH 629 Calcium succinate trihydrate CaC4H4O4 ∙ 3H2O 140-99-8 210.196 needles sl H2O; s dil acid; i

EtOH 630 Calcium sulfate CaSO4 7778-18-9 136.141 orth cry 1460 2.96 0.205

631 Calcium sulfate hemihydrate CaSO4 ∙ 0.5H2O 10034-76-1 145.149 wh powder 0.20525 632 Calcium sulfate dihydrate CaSO4 ∙ 2H2O 10101-41-4 172.171 monocl cry or

powder 150 dec 2.32 0.20520 i os

633 Calcium sulfide CaS 20548-54-3 72.143 wh-yel cub cry; hyg

2524 2.59 sl H2O; i EtOH

634 Calcium sulfite dihydrate CaSO3 ∙ 2H2O 10257-55-3 156.172 wh powder 0.007025 sl EtOH; s acid 635 Calcium tartrate tetrahydrate CaC4H4O6 ∙ 4H2O 3164-34-9* 260.210 wh pow 0.0410 s dil acid; sl EtOH 636 Calcium telluride CaTe 12013-57-9 167.68 wh cub cry 1600 dec 4.87 637 Calcium tetrahydroaluminate Ca(AlH4)2 16941-10-9 102.105 gray powder; flam reac H2O; s thf; i

eth, bz 638 Calcium thiocyanate tetrahydrate Ca(SCN)2 ∙ 4H2O 2092-16-2 228.304 hyg cry 160 dec vs H2O; s EtOH, ace 639 Calcium thiosulfate hexahydrate CaS2O3 ∙ 6H2O 10124-41-1 260.298 tricl cry 45 dec 1.87 s H2O; i EtOH 640 Calcium titanate CaTiO3 12049-50-2 135.943 cub cry 1980 3.98 641 Calcium tungstate CaWO4 7790-75-2 287.92 wh tetr cry 1620 6.06 0.2

18 s hot acid 642 Calcium zirconate CaZrO3 12013-47-7 179.300 powder 2550 643 Californium Cf 7440-71-3 251 hex or cub metal 900 15.1 644 Carbon (diamond) C 7782-40-3 12.011 col cub cry 4440 (12.4

GPa) 3.513 i H2O

645 Carbon (graphite) C 7782-42-5 12.011 soft blk hex cry 4489 tp (10.3 MPa)

3825 sp 2.2 i H2O

646 Carbon black C 1333-86-4 12.011 fine blk pow i H2O 647 Carbon (fullerene-C60) C60 99685-96-8 720.642 yel needles or

plates >280 s os

648 Carbon (fullerene-C70) C70 115383-22-7 840.749 red-brn solid >280 s bz, tol 649 Fullerene fluoride C60F60 134929-59-2 1860.546 col plates 287 vs ace; s thf; i chl 650 Carbon monoxide CO 630-08-0 28.010 col gas -205.02 -191.5 1.145 g/L sl H2O; s chl, EtOH 651 Carbon dioxide CO2 124-38-9 44.010 col gas -56.558 tp -78.464 sp 1.799 g/L s H2O 652 Carbon suboxide C3O2 504-64-3 68.031 col gas -112.5 6.8 2.781 g/L reac H2O 653 Carbon disulfide CS2 75-15-0 76.141 col or yel liq -112.1 46 1.2632

20 i H2O; vs EtOH, bz, os

654 Carbon subsulfide C3S2 627-34-9 100.162 red liq -1 90 dec 1.27 reac H2O 655 Carbon diselenide CSe2 506-80-9 169.93 yel liq -43.7 125.5 2.6823

20 i H2O; vs ctc, tol 656 Carbon oxysulfide COS 463-58-1 60.075 col gas -138.8 -50 2.456 g/L s H2O, EtOH 657 Carbon oxyselenide COSe 1603-84-5 106.97 col gas; unstab -124.4 -21.7 4.372 g/L reac H2O 658 Carbon sulfide selenide CSSe 5951-19-9 123.04 yel liq -85 84.5 1.99 i H2O 659 Carbon sulfide telluride CSTe 10340-06-4 171.68 red-yel liq; unstab -54 20 dec reac H2O 660 Carbonyl bromide COBr2 593-95-3 187.818 col liq 64.5 2.5 reac H2O 661 Carbonyl chloride COCl2 75-44-5 98.916 col gas -127.78 8 4.043 g/L sl H2O; s bz, tol 662 Carbonyl fluoride COF2 353-50-4 66.007 col gas -111.26 -84.57 2.698 g/L reac H2O 663 Cyanogen C2N2 460-19-5 52.034 col gas -27.83 -21.1 2.127 g/L sl H2O, eth; s EtOH 664 Cyanogen azide N3CN 764-05-6 68.038 col oily liq exp 665 Cyanogen bromide BrCN 506-68-3 105.922 wh hyg needles 52 61.5 2.015 s H2O, EtOH, eth 666 Cyanogen chloride ClCN 506-77-4 61.471 col vol liq or gas -6.55 13 2.513 g/L s H2O, EtOH, eth 667 Cyanogen fluoride FCN 1495-50-7 45.016 col gas -82 -46 1.840 g/L 668 Cyanogen iodide ICN 506-78-5 152.922 col needles 146.7 2.84 s H2O, EtOH, eth 669 Cerium Ce 7440-45-1 140.116 silv metal; cub or

hex 799 3443 6.770 s dil acid

670 Cerium boride CeB6 12008-02-5 204.982 blue refrac solid; hex

2550 4.87 i H2O, HCl

671 Cerium carbide CeC2 12012-32-7 164.137 red hex cry 2250 5.47 reac H2O 672 Cerium carbide Ce2C3 12115-63-8 316.264 yel-brn cub cry 1505 6.9 673 Cerium nitride CeN 25764-08-3 154.123 refrac cub cry 2557 7.89 674 Cerium silicide CeSi2 12014-85-6 196.287 tetr cry 1420 5.31 i H2O 675 Cerium(II) hydride CeH2 13569-50-1 142.132 cub cry 5.45 reac H2O 676 Cerium(II) iodide CeI2 19139-47-0 393.925 bronze cry 808 677 Cerium(II) sulfide CeS 12014-82-3 172.181 yel cub cry 2445 5.9 678 Cerium(III) acetate sesqihydrate Ce(C2H3O2)3 ∙ 1.5H2O 17829-82-2 col cry dec 115 2615 s H2O 679 Cerium(III) ammonium nitrate

tetrahydrate (NH4)2Ce(NO3)5 ∙ 4H2O 13083-04-0 558.279 col monocl cry 74 vs H2O

680 Cerium(III) ammonium sulfate tetrahydrate

NH4Ce(SO4)2 ∙ 4H2O 21995-38-0* 422.341 monocl cry s H2O

681 Cerium(III) bromide CeBr3 14457-87-5 379.828 wh hex cry; hyg 732 1457 s H2O

682 Cerium(III) bromide heptahydrate CeBr3 ∙ 7H2O 7789-56-2 505.935 col hyg needles 732 s H2O, EtOH 683 Cerium(III) carbonate Ce2(CO3)3 537-01-9 460.259 wh pow dec 500 i H2O; s acid 684 Cerium(III) carbonate pentahydrate Ce2(CO3)3 ∙ 5H2O 72520-94-6 550.335 wh powder i H2O; s dil acid 685 Cerium(III) chloride CeCl3 7790-86-5 246.475 wh hex cry 807 3.97 s H2O, EtOH 686 Cerium(III) chloride heptahydrate CeCl3 ∙ 7H2O 18618-55-8 372.582 yel orth cry; hyg 90 dec vs H2O, EtOH 687 Cerium(III) fluoride CeF3 7758-88-5 197.111 wh hex cry; hyg 1430 2180 6.157 i H2O 688 Cerium(III) hydride CeH3 13864-02-3 143.140 blk pow or blue-

blk cry dec (flam) reac H2O

689 Cerium(III) hydroxide Ce(OH)3 15785-09-8 191.138 wh solid i H2O; s acid 690 Cerium(III) iodide CeI3 7790-87-6 520.829 yel orth cry; hyg 760 s H2O 691 Cerium(III) iodide nonahydrate CeI3 ∙ 9H2O 7790-87-6* 682.967 wh-red cry vs H2O; s EtOH 692 Cerium(III) nitrate hexahydrate Ce(NO3)3 ∙ 6H2O 10108-73-3* 434.222 col-red cry 150 dec 17625 s ace 693 Cerium(III) oxalate nonahydrate Ce(C2O4)3 ∙ 9H2O 13266-83-6 706.426 wh pow dec i H2O, EtOH; s acid 694 Cerium(III) oxide Ce2O3 1345-13-7 328.230 yel-grn cub cry 2210 3730 6.2 i H2O; s acid 695 Cerium(III) 2,4-pentanedioate

trihydrate Ce(CH3COCHCOCH3)3 ∙

3H2O 15653-01-7 491.486 yel hyg cry ≈150 vs EtOH

696 Cerium(III) perchlorate hexahydrate Ce(ClO4)3 ∙ 6H2O 36907-38-7 546.559 hyg col cry dec 200 s H2O, EtOH 697 Cerium(III) selenate Ce2(SeO4)3 709.11 rhom cry 4.46 s H2O 698 Cerium(III) sulfate Ce2(SO4)3 13454-94-9 568.420 col hyg cry 920 dec s H2O 699 Cerium(III) sulfate octahydrate Ce2(SO4)3 ∙ 8H2O 13454-94-9 712.542 wh orth cry ≈250 dec 2.87 s H2O 700 Cerium(III) sulfide Ce2S3 12014-93-6 376.427 red cub cry 2450 5.02 i H2O 701 Cerium(III) tungstate Ce2(WO4)3 13454-74-5 1023.75 yel tetr cry 1089 6.77 i H2O 702 Cerium(IV) ammonium nitrate (NH4)2Ce(NO3)6 16774-21-3 548.223 red-oran cry vs H2O 703 Cerium(IV) ammonium sulfate

dihydrate (NH4)4Ce(SO4)4 ∙ 2H2O 10378-47-9 632.551 cry pow dec 450

704 Cerium(IV) fluoride CeF4 10060-10-3 216.110 wh hyg powder ≈600 dec 4.77 i H2O 705 Cerium(IV) hydroxide Ce(OH)4 12014-56-1 208.146 yel-wh pow i H2O; s conc acid 706 Cerium(IV) oxide CeO2 1306-38-3 172.115 wh-yel powder;

cub 2480 7.216 i H2O, dil acid

707 Cerium(IV) sulfate tetrahydrate Ce(SO4)2 ∙ 4H2O 10294-42-5 404.303 yel-oran orth cry 180 dec 3.91 9.6620 708 Cesium Cs 7440-46-2 132.905 silv-wh metal 28.5 671 1.873 reac H2O 709 Cesium acetate CsC2H3O2 3396-11-0 191.949 hyg lumps 194 10

710 Cesium aluminum sulfate dodecahydrate

CsAl(SO4)2 ∙ 12H2O 7784-17-0 568.196 col cub cry 117 dec 1.97 s H2O; i EtOH

711 Cesium amide CsNH2 22205-57-8 148.928 wh tetr cry 3.70 712 Cesium azide CsN3 22750-57-8 174.925 hyg tetr cry; exp 326 ≈3.5 22

713 Cesium bromate CsBrO3 13454-75-6 260.807 col hex cry 4.11 3.83 25

714 Cesium bromide CsBr 7787-69-1 212.809 wh cub cry; hyg 636 ≈1300 4.43 12325 s EtOH; i ace 715 Cesium carbonate Cs2CO3 534-17-8 325.820 wh monocl cry;

hyg 793 4.24 26115 s EtOH, eth

716 Cesium chlorate CsClO3 13763-67-2 216.356 col hex cry 342 3.57 7.78 25 sl H2O

717 Cesium chloride CsCl 7647-17-8 168.358 wh cub cry; hyg 646 1297 3.988 19125 s EtOH 718 Cesium chromate(IV) Cs4CrO4 56320-90-2 647.616 yel hex cry 982 4.24 vs H2O 719 Cesium cyanide CsCN 21159-32-0 158.923 wh cub cry; hyg 350 3.34 vs H2O 720 Cesium dibromoiodate CsIBr2 18278-82-5 419.617 dark oran cry dec s H2O 721 Cesium fluoride CsF 13400-13-0 151.903 wh cub cry; hyg 703 4.64 57325 s MeOH; i diox, py 722 Cesium fluoroborate CsBF4 18909-69-8 219.710 wh orth cry 555 dec 3.2 1.6

17 sl H2O 723 Cesium formate CsCHO2 3495-36-1 177.923 wh cry 1.017 vs H2O 724 Cesium hexafluorogermanate Cs2GeF6 452.44 wh cry ≈675 4.10 sl cold H2O; s hot

H2O 725 Cesium hydride CsH 58724-12-2 133.913 wh cub cry; flam 528 3.42 reac H2O 726 Cesium hydrogen carbonate CsHCO3 15519-28-5 193.922 rhom cry 175 dec 209

15 s EtOH 727 Cesium hydrogen fluoride CsHF2 12280-52-3 171.910 tetr cry 170 3.86 728 Cesium hydrogen sulfate CsHSO4 7789-16-4 229.976 col rhom prisms dec 3.352 s H2O 729 Cesium hydroxide CsOH 21351-79-1 149.912 wh-yel hyg cry 342.3 3.68 30030 s EtOH 730 Cesium iodate CsIO3 13454-81-4 307.807 wh monocl cry 4.85 2.6

731 Cesium iodide CsI 7789-17-5 259.809 col cub cry; hyg 632 ≈1280 4.51 84.825 s EtOH, MeOH, ace 732 Cesium metaborate CsBO2 92141-86-1 175.715 cub cry 732 ≈3.7 733 Cesium molybdate Cs2MoO4 13597-64-3 425.75 wh cry 956.3 67

18 s H2O 734 Cesium nitrate CsNO3 7789-18-6 194.910 wh hex or cub cry 409 3.66 27.9

25 s ace; sl EtOH 735 Cesium nitrite CsNO2 13454-83-6 178.911 yel cry 406 s H2O 736 Cesium oxide Cs2O 20281-00-9 281.810 yel-oran hex cry 495 4.65 vs H2O 737 Cesium superoxide CsO2 12018-61-0 164.904 yel tetr cry 432 3.77 reac H2O 738 Cesium trioxide Cs2O3 12134-22-4 313.809 brn cry ≈400 4.25 reac H2O 739 Cesium perchlorate CsClO4 13454-84-7 232.356 wh orth cry; hyg ≈600 dec 3.327 2.00

740 Cesium periodate CsIO4 13478-04-1 323.807 wh rhom prisms 4.26 2.2 15

741 Cesium sulfate Cs2SO4 10294-54-9 361.874 wh orth cry or hex prisms; hyg

1005 4.24 18225 i EtOH, ace, py

742 Cesium sulfide Cs2S 12214-16-3 297.876 yel orth hyg cry 520 vs H2O 743 Cesium trifluoroacetate Cs(C2F3O2) 21907-50-6 245.920 hyg solid 115 vs H2O 744 Chlorine Cl2 7782-50-5 70.90 grn-yel gas -101.5 -34.04 2.898 g/L sl H2O 745 Hypochlorous acid HOCl 7790-92-3 52.460 grn-yel; stable

only in aq soln s H2O

746 Chloric acid HClO3 7790-93-4 84.459 exists only in aq soln

vs H2O

747 Perchloric acid HClO4 7601-90-3 100.459 col hyg liq -112 ≈90 dec 1.77 s H2O 748 Chlorine monoxide Cl2O 7791-21-1 86.905 yel-brn gas -120.6 2.2 3.552 g/L vs H2O 749 Chlorine dioxide ClO2 10049-04-4 67.452 oran-grn gas -59 11 2.757 g/L sl H2O 750 Dichlorine trioxide Cl2O3 17496-59-2 118.904 dark brn solid exp <25 751 Dichlorine hexoxide Cl2O6 12442-63-6 166.902 red liq 3.5 ≈200 reac H2O 752 Dichlorine heptoxide Cl2O7 10294-48-1 182.902 col oily liq; exp -91.5 82 1.9 reac H2O 753 Chlorine fluoride ClF 7790-89-8 54.451 col gas -155.6 -101.1 2.226 g/L reac H2O 754 Chlorine trifluoride ClF3 7790-91-2 92.448 gas -76.34 11.75 3.779 g/L reac H2O 755 Chlorine pentafluoride ClF5 13637-63-3 130.445 col gas -103 -13.1 5.332 g/L 756 Chlorosyl trifluoride ClOF3 30708-80-6 108.447 col liq -42 27 reac H2O 757 Chloryl fluoride ClO2F 13637-83-7 86.450 col gas -115 -6 3.534 g/L reac H2O 758 Chloryl trifluoride ClO2F3 38680-84-1 124.447 col gas -81.2 -21.6 5.087 g/L reac H2O 759 Perchloryl fluoride ClO3F 7616-94-6 102.449 col gas -147 -46.75 4.187 g/L 760 Chlorine perchlorate ClOClO3 27218-16-2 134.904 unstab yel liq -117 ≈45 dec 1.81

761 Chromium Cr 7440-47-3 51.996 blue-wh metal; cub

1907 2671 7.15 reac dil acid

762 Chromic acid H2CrO4 7738-94-5 118.010 aq soln only s H2O 763 Chromium antimonide CrSb 12053-12-2 173.756 hex cry 1110 7.11 764 Chromium arsenide Cr2As 12254-85-2 178.914 tetr cry 7.04 765 Chromium boride (CrB) CrB 12006-79-0 62.807 refrac orth cry 2100 6.1 766 Chromium boride (CrB2) CrB2 12007-16-8 73.618 refrac solid; hex 2200 5.22 767 Chromium boride (Cr2B) Cr2B 12006-80-3 114.803 refrac solid 1875 768 Chromium boride (Cr5B3) Cr5B3 12007-38-4 292.414 tetr cry 1900 6.10 769 Chromium carbide Cr3C2 12012-35-0 180.009 gray orth cry 1895 6.68 770 Chromium carbonyl Cr(CO)6 13007-92-6 220.056 col orth cry 130 dec subl 1.77 i H2O, EtOH; s eth,

chl 771 Chromium nitride (CrN) CrN 24094-93-7 66.003 gray cub cry 1080 dec 5.9 772 Chromium nitride (Cr2N) Cr2N 12053-27-9 117.999 hex cry 1650 6.8 773 Chromium phosphide CrP 26342-61-0 82.970 orth cry 5.25 774 Chromium selenide CrSe 12053-13-3 130.96 hex cry ≈1500 6.1 775 Chromium silicide (CrSi2) CrSi2 12018-09-6 108.167 gray hex cry 1490 4.91 776 Chromium silicide (Cr3Si) Cr3Si 12018-36-9 184.074 cub cry 1770 6.4 777 Chromium(II) acetate monohydrate Cr(C2H3O2)2 ∙ H2O 628-52-4* 188.100 red monocl cry 1.79 sl H2O 778 Chromium(II) bromide CrBr2 10049-25-9 211.804 wh monocl cry; aq

soln blue 842 4.236 s H2O, EtOH

779 Chromium(II) chloride CrCl2 10049-05-5 122.902 wh hyg needles; aq soln blue

824 1120 2.88 s H2O

780 Chromium(II) chloride tetrahydrate Cr(H2O)4Cl2 ∙ 4H2O 13931-94-7 267.024 blue hyg cry 51 dec s H2O 781 Chromium(II) fluoride CrF2 10049-10-2 89.993 blue-grn monocl

cry 894 3.79 sl H2O; i EtOH

782 Chromium(II) formate monohydrate Cr(CHOO)2 ∙ H2O 4493-37-2 160.046 red needles s H2O 783 Chromium(II) iodide CrI2 13478-28-9 305.805 red-brn cry; hyg 867 5.1 s H2O 784 Chromium(II) oxalate monohydrate CrC2O4 ∙ H2O 814-90-4* 158.030 yel-grn powder 2.468 sl H2O 785 Chromium(II) sulfate pentahydrate CrSO4 ∙ 5H2O 13825-86-0 238.135 blue cry 210 s dil acid; sl EtOH;

i ace 786 Chromium(II,III) oxide Cr3O4 12018-34-7 219.986 cub cry 6.1 787 Chromium(III) acetate Cr(C2H3O2)3 1066-30-4 229.127 blue-grn pwd sl H2O 788 Chromium(III) acetate monohydrate Cr(C2H3O2)3 ∙ H2O 25013-82-5 247.143 gray-grn pow sl H2O; i EtOH 789 Chromium(III) acetate hexahydrate Cr(C2H3O2)3 ∙ 6H2O 1066-30-4* 337.220 blue needles s H2O 790 Chromium(III) acetate hydroxide Cr(C2H3O2)2(OH) 39430-51-8 187.092 viol cry pow vs H2O 791 Chromium(III) bromide CrBr3 10031-25-1 291.708 dark grn hex cry 812 4.68 s hot H2O, bz 792 Chromium(III) bromide

hexahydrate (α) CrBr3(H2O)4 ∙ 2H2O 18721-05-6 399.799 grn hyg cry s H2O, EtOH

793 Chromium(III) bromide hexahydrate (β)

Cr(H2O)6Br3 10031-25-1* 399.799 viol hyg cry s H2O; i EtOH, eth

794 Chromium(III) chloride CrCl3 10025-73-7 158.355 red-viol cry 1152 1300 dec 2.76 sl H2O 795 Chromium(III) chloride

hexahydrate [CrCl2(H2O)4]Cl ∙ 2H2O 10060-12-5 266.446 grn monocl cry;

hyg s H2O, EtOH; sl

ace; i eth 796 Chromium(III) fluoride CrF3 7788-97-8 108.991 grn needles 1425 3.8 i H2O, EtOH 797 Chromium(III) fluoride trihydrate CrF3 ∙ 3H2O 16671-27-5 163.037 grn hex cry 2.2 sl H2O 798 Chromium(III) hydroxide sulfate Cr(OH)SO4 12336-95-7 165.066 grn cry

800 Chromium(III) hydroxide trihydrate Cr(OH)3 ∙ 3H2O 1308-14-1 157.063 blue-grn powder i H2O; s acid 801 Chromium(III) iodide CrI3 13569-75-0 432.709 dark grn hex cry 500 dec 5.32 sl H2O 802 Chromium(III) nitrate Cr(NO3)3 13548-38-4 238.011 grn hyg powder >60 dec vs H2O 803 Chromium(III) nitrate nonahydrate Cr(NO3)3 ∙ 9H2O 7789-02-8 400.148 grn-blk monocl

cry 66.3 >100 dec 1.80 vs H2O

804 Chromium(III) oxide Cr2O3 1308-38-9 151.990 grn hex cry 2320 ≈3000 5.22 i H2O, EtOH; sl acid, alk

805 Chromium(III) 2,4-pentanedioate Cr(CH3COCHCOCH3)3 21679-31-2 349.320 red monocl cry 208 345 1.34 i H2O; s bz 806 Chromium(III) perchlorate Cr(ClO4)3 27535-70-2 350.348 grn-blue cry 58

25 vs H2O 807 Chromium(III) phosphate CrPO4 7789-04-0 146.967 blue orth cry >1800 4.6 i H2O, acid, aqua

regia 808 Chromium(III) phosphate

hemiheptahydrate CrPO4 ∙ 3.5H2O 84359-31-9 210.021 blue-grn powder 2.15 i H2O; s acid

809 Chromium(III) phosphate hexahydrate

CrPO4 ∙ 6H2O 84359-31-9 255.059 viol cry >500 dec 2.121 i H2O; s acid, alk

810 Chromium(III) potassium oxalate trihydrate

K3Cr(C2O4)3 ∙ 3H2O 15275-09-9 487.394 blue-grn monocl cry

s H2O

811 Chromium(III) potassium sulfate dodecahydrate

CrK(SO4)2 ∙ 12H2O 7788-99-0 499.403 viol-blk cub cry 89 dec 1.83 s H2O; i EtOH

812 Chromium(III) sulfate Cr2(SO4)3 10101-53-8 392.180 red pow dec >700 3.1 64 25 s H2O; vs acid

813 Chromium(III) sulfate octadecahydrate

Cr2(SO4)3 ∙ 18H2O 10101-53-8* 716.455 viol cry dec 115 1.7 reac H2O

814 Chromium(III) sulfide Cr2S3 12018-22-3 200.187 brn-blk hex cry 3.8 815 Chromium(III) telluride Cr2Te3 12053-39-3 486.79 hex cry ≈1300 7.0 816 Chromium(IV) chloride CrCl4 15597-88-3 193.808 gas, stable at HT >600 dec 7.922 g/L 817 Chromium(IV) fluoride CrF4 10049-11-3 127.990 grn cry 277 2.89 reac H2O 818 Chromium(IV) oxide CrO2 12018-01-8 83.995 brn-blk tetr

powder ≈400 dec 4.89 i H2O; s acid

819 Chromium(V) fluoride CrF5 14884-42-5 146.988 red orth cry 34 117 reac H2O 820 Chromium(V) oxide Cr2O5 12218-36-9 183.989 blk needles dec 200 821 Chromium(VI) fluoride CrF6 13843-28-2 165.986 yel solid; stable at

low temp -100 dec

822 Chromium(VI) oxide CrO3 1333-82-0 99.994 red orth cry 197 ≈250 dec 2.7 169 25

823 Chromium(VI) tetrafluoride oxide CrOF4 23276-90-6 143.989 dark red solid 55 reac H2O, ace, dmso

824 Chromium(VI) dichloride dioxide CrO2Cl2 14977-61-8 154.901 red liq -96.5 117 1.91 reac H2O; s ctc, chl, bz

825 Chromium(VI) difluoride dioxide CrO2F2 7788-96-7 121.992 red-viol cry 30 subl reac H2O 826 Cobalt Co 7440-48-4 58.933 gray metal; hex or

cub 1495 2927 8.86 s dil acid

827 Cobaltocene Co(C5H5)2 1277-43-6 189.119 blk-purp cry 173 828 Cobalt antimonide CoSb 12052-42-5 180.693 hex cry 1202 8.8 829 Cobalt arsenic sulfide CoAsS 12254-82-9 165.920 silv-wh solid ≈6.1 830 Cobalt arsenide (CoAs) CoAs 27016-73-5 133.855 orth cry 1180 8.22 831 Cobalt arsenide (CoAs2) CoAs2 12044-42-7 208.776 monocl cry 7.2 832 Cobalt arsenide (CoAs3) CoAs3 12256-04-1 283.698 cub cry 942 6.84 833 Cobalt boride (CoB) CoB 12006-77-8 69.744 refrac solid 1460 7.25 reac H2O, HNO3 834 Cobalt boride (Co2B) Co2B 12045-01-1 128.677 refrac solid 1280 8.1 835 Cobalt carbonyl Co2(CO)8 10210-68-1 341.947 oran cry 51 dec 1.78 i H2O; s EtOH, eth,

CS2 836 Cobalt disulfide CoS2 12013-10-4 123.063 cub cry 4.3 837 Cobalt dodecacarbonyl Co4(CO)12 17786-31-1 571.854 blk cry 60 dec 2.09 838 Cobalt phosphide Co2P 12134-02-0 148.840 gray needles 1386 6.4 i H2O; s HNO3 839 Cobalt silicide CoSi2 12017-12-8 115.104 gray cub cry 1326 4.9 s hot HCl 840 Cobalt(II) acetate Co(C2H3O2)2 71-48-7 177.022 pink cry vs H2O; s EtOH 841 Cobalt(II) acetate tetrahydrate Co(C2H3O2)2 ∙ 4H2O 6147-53-1 249.082 red monocl cry 1.705 s H2O, EtOH, dil

acid 842 Cobalt(II) aluminate CoAl2O4 13820-62-7 176.894 blue cub cry 4.37 i H2O 843 Cobalt(II) arsenate octahydrate Co3(AsO4)2 ∙ 8H2O 24719-19-5 598.760 red monocl

needles 400 dec 1000 dec 3.0 i H2O; s dil acid

844 Cobalt(II) bromate hexahydrate Co(BrO3)2 ∙ 6H2O 13476-01-2 422.829 viol cry ≈2.5 vs H2O 845 Cobalt(II) bromide CoBr2 7789-43-7 218.741 grn hex cry; hyg 678 4.91 113.2

20 s MeOH, EtOH, ace 846 Cobalt(II) bromide hexahydrate CoBr2 ∙ 6H2O 13762-12-4 326.832 red hyg cry 47 dec 100 dec 2.46 113.2 847 Cobalt(II) carbonate CoCO3 513-79-1 118.942 pink rhomb cry dec 280 4.2 0.00014

20 i EtOH 848 Cobalt(II) basic carbonate 2CoCO3 ∙ 3Co(OH)2 ∙

H2O 7542-09-8 534.743 red-viol cry dec i H2O; s acid

849 Cobalt(II) chlorate hexahydrate Co(ClO3)2 ∙ 6H2O 333.927 dark red hyg cry dec 61 s H2O 850 Cobalt(II) chloride CoCl2 7646-79-9 129.839 blue hyg leaflets 737 1049 3.36 56.2

25 s EtOH, eth, ace, py 851 Cobalt(II) chloride dihydrate CoCl2 ∙ 2H2O 16544-92-6 165.870 viol-blue cry 2.477 56.225

852 Cobalt(II) chloride hexahydrate CoCl2 ∙ 6H2O 7791-13-1 237.930 pink-red monocl cry

87 dec 1.924 56.225 s EtOH, ace, eth

853 Cobalt(II) chromate CoCrO4 24613-38-5 174.927 yel-brn orth cry ≈4.0 i H2O; s acid 854 Cobalt(II) chromite CoCr2O4 13455-25-9 226.923 blue-grn cub cry 5.14 i H2O, conc acid 855 Cobalt(II) citrate dihydrate Co3(C6H5O7)2 ∙ 2H2O 18727-04-3 265.170 rose red cry dec 150 0.815 856 Cobalt(II) cyanide Co(CN)2 542-84-7 110.967 blue hyg cry 1.872 i H2O 857 Cobalt(II) cyanide dihydrate Co(CN)2 ∙ 2H2O 20427-11-6 146.998 pink-brn needles i H2O, acid 858 Cobalt(II) diiron tetroxide CoFe2O4 12052-28-7 234.621 blk solid s hot HCl 859 Cobalt(II) ferricyanide Co3[Fe(CN)6]2 14049-81-1 600.698 red needles i H2O, HCl; s

NH4OH 860 Cobalt(II) fluoride CoF2 10026-17-2 96.930 red tetr cry 1127 ≈1400 4.46 1.4

25 s acid 861 Cobalt(II) fluoride tetrahydrate CoF2 ∙ 4H2O 13817-37-3 168.992 red orth cry dec 2.22 1.425 862 Cobalt(II) formate dihydrate Co(CHO2)2 ∙ 2H2O 6424-20-0 184.998 red cry powder 140 dec 2.13 5.0320 i EtOH 863 Cobalt(II) hexafluoro-2,4-

pentanedioate Co(CF3COCHCOCF3)2 19648-83-0 473.035 powder 197

864 Cobalt(II) hexafluorosilicate hexahydrate

CoSiF6 ∙ 6H2O 12021-68-0 309.100 pale red cry 2.087 76.822

865 Cobalt(II) hydroxide Co(OH)2 21041-93-0 92.948 blue-grn cry ≈160 dec 3.60 sl H2O; s acid 866 Cobalt(II) hydroxide monohydrate Co(OH)2 ∙ H2O 35340-84-2 110.963 blue solid 136 dec 867 Cobalt(II) iodate Co(IO3)2 13455-28-2 408.738 blk-viol needles 200 dec 5.09 0.46

868 Cobalt(II) iodide CoI2 15238-00-3 312.742 blk hex cry; hyg 520 5.60 203 25

869 Cobalt(II) iodide dihydrate CoI2 ∙ 2H2O 13455-29-3 348.773 hyg grn cry dec 100 870 Cobalt(II) iodide hexahydrate CoI2 ∙ 6H2O 15238-00-3* 420.833 red hex prisms 130 dec 2.90 20325 s EtOH, eth, ace 871 Cobalt(II) molybdate CoMoO4 13762-14-6 218.87 blk monocl cry 1040 4.7 872 Cobalt(II) molybdate monohydrate CoMoO4 ∙ H2O 18601-87-1 236.89 blk pow 873 Cobalt(II) nitrate Co(NO3)2 10141-05-6 182.942 pale red powder 100 dec 2.49 103

874 Cobalt(II) nitrate hexahydrate Co(NO3)2 ∙ 6H2O 10026-22-9 291.034 red monocl cry; hyg

≈55 1.88 10325 s EtOH

875 Cobalt(II) nitrite Co(NO2)2 18488-96-5 150.944 0.49 25

876 Cobalt(II) oleate Co(C18H33O2)2 14666-94-5 621.840 brn amorp pow i H2O; s EtOH, eth 877 Cobalt(II) orthosilicate Co2SiO4 12017-08-2 209.950 red-viol orth cry 1345 4.63 i H2O; s dil HCl 878 Cobalt(II) oxalate CoC2O4 814-89-1 146.952 pink powder 250 dec 3.02 0.0037

20 s acid, NH4OH 879 Cobalt(II) oxalate dihydrate CoC2O4 ∙ 2H2O 5965-38-8 182.982 pink needles dec 0.0037 sl acid; s NH4OH 880 Cobalt(II) oxide CoO 1307-96-6 74.932 gray cub cry 1830 6.44 i H2O; s acid 881 Cobalt(II) 2,4-pentanedioate Co(CH3COCHCOCH3)2 14024-48-7 257.149 bl-viol cry 167 882 Cobalt(II) perchlorate Co(ClO4)2 13455-31-7 257.834 red needles 3.33 113

25 i EtOH, ace 883 Cobalt(II) perchlorate hexahydrate Co(ClO4)2 ∙ 6H2O 13478-33-6 365.926 dark red cry dec 170 3.33 vs H2O 884 Cobalt(II) phosphate octahydrate Co3(PO4)2 ∙ 8H2O 10294-50-5 510.865 pink amorp

powder 2.77 i H2O; s acid

885 Cobalt(II) potassium sulfate hexahydrate

CoK2(SO4)2 ∙ 6H2O 10026-20-7 437.347 red monocl cry 75 dec 2.22 vs H2O

886 Cobalt(II) selenate pentahydrate CoSeO4 ∙ 5H2O 14590-19-3 291.97 red tricl cry dec 2.51 5515 887 Cobalt(II) selenide CoSe 1307-99-9 137.89 yel hex cry 1055 7.65 i H2O, alk; s aqua

regia 888 Cobalt(II) selenite dihydrate CoSeO3 ∙ 2H2O 19034-13-0 221.92 blue-red powder i H2O 889 Cobalt(II) stannate Co2SnO4 12139-93-4 300.574 grn-blue cub cry 6.30 i H2O; s alk 890 Cobalt(II) stearate Co(C18H35O2)2 1002-88-6 625.872 purp solid 74 1.13 891 Cobalt(II) sulfate CoSO4 10124-43-3 154.996 red orth cry >700 3.71 38.3

892 Cobalt(II) sulfate monohydrate CoSO4 ∙ H2O 13455-34-0 173.011 red monocl cry 3.08 38.325 893 Cobalt(II) sulfate heptahydrate CoSO4 ∙ 7H2O 10026-24-1 281.102 pink monocl cry 41 dec 2.03 38.325 sl EtOH, MeOH 894 Cobalt(II) sulfide CoS 1317-42-6 90.998 blk amorp powder 1117 5.45 i H2O; s acid 895 Cobalt(II) telluride CoTe 12017-13-9 186.53 hex cry ≈8.8 896 Cobalt(II) thiocyanate Co(SCN)2 3017-60-5 175.097 yel-brn powder 103

25 s EtOH, MeOH, ace, eth

897 Cobalt(II) thiocyanate trihydrate Co(SCN)2 ∙ 3H2O 97126-35-7 229.143 viol rhomb cry 10325 s EtOH, eth, ace 898 Cobalt(II) titanate CoTiO3 12017-01-5 154.798 grn rhomb cry 5.0 899 Cobalt(II) tungstate CoWO4 12640-47-0 306.77 blue monocl cry ≈7.8 i H2O; s hot conc

acid 900 Cobalt(II,III) oxide Co3O4 1308-06-1 240.798 blk cub cry 900 dec 6.11 i H2O; s acid, alk 901 Cobalt(III) acetate Co(C2H3O2)3 917-69-1 236.064 grn hyg cry 100 dec s H2O, EtOH 902 Cobalt(III) ammonium

tetranitrodiammine NH4[Co(NH3)2(NO2)4] 13600-89-0 295.054 red-brn orth cry 1.97 s H2O

903 Cobalt(III) fluoride CoF3 10026-18-3 115.928 brn hex cry 927 3.88 reac H2O; s EtOH, eth, bz

904 Cobalt(III) fluoride dihydrate Co2F6 ∙ 2H2O 54496-71-8 267.887 red rhomb cry 2.19 s H2O; i EtOH 905 Cobalt(III) hexammine chloride Co(NH3)6Cl3 10534-89-1 267.475 red monocl cry 1.71 s H2O; i EtOH 906 Cobalt(III) hydroxide Co(OH)3 1307-86-4 109.955 brn powder dec ≈4 i H2O; s acid 907 Cobalt(III) nitrate Co(NO3)3 15520-84-0 244.948 grn cub cry; hyg ≈3.0 s H2O; reac os

909 Cobalt(III) oxide monohydrate Co2O3 ∙ H2O 12016-80-7 183.880 brn-blk hex cry 150 dec i H2O; s acid 910 Cobalt(III) 2,4-pentanedioate Co(CH3COCHCOCH3)3 21679-46-9 356.257 dark grn cry 213 s bz, ace 911 Cobalt(III) potassium nitrite

sesquihydrate CoK3(NO2)6 ∙ 1.5H2O 13782-01-9* 479.284 yel cub cry 2.6 sl H2O; reac acid; i

EtOH 912 Cobalt(III) sulfide Co2S3 1332-71-4 214.061 blk cub cry 4.8 reac acid 913 Cobalt(III) titanate Co2TiO4 12017-38-8 229.731 grn-blk cub cry 5.1 s conc HCl 914 Copper Cu 7440-50-8 63.546 red metal; cub 1084.62 2560 8.96 sl dil acid 915 Copper arsenide Cu3As 12005-75-3 265.560 dark gray solid 827 916 Copper nitride Cu3N 1308-80-1 204.645 cub cry 300 dec 5.84 917 Copper phosphide CuP2 12019-11-3 125.494 monocl cry ≈900 4.20 918 Copper silicide Cu5Si 12159-07-8 345.816 solid 825 919 Copper(I) acetate CuC2H3O2 598-54-9 122.590 col cry dec subl reac H2O 920 Copper(I) acetylide Cu2C2 1117-94-8 151.113 red amorp powder;

exp 921 Copper(I) azide CuN3 14336-80-2 105.566 tetr cry; exp 922 Copper(I) bromide CuBr 7787-70-4 143.450 wh cub cry; hyg 483 1345 4.98 0.001220 i ace 923 Copper(I) chloride CuCl 7758-89-6 98.999 wh cub cry 423 1490 4.14 0.004720 i EtOH, ace 924 Copper(I) cyanide CuCN 544-92-3 89.564 wh powder or grn

orth cry 474 dec 2.9 i H2O, EtOH; s KCN

soln 925 Copper(I) fluoride CuF 13478-41-6 82.544 cub cry 7.1 926 Copper(I) hydride CuH 13517-00-5 64.554 red-brn solid 60 dec 927 Copper(I) iodide CuI 7681-65-4 190.450 wh cub cry 591 ≈1290 5.67 0.00002020 i dil acid 928 Copper(I) mercury iodide Cu2HgI4 13876-85-2 835.30 red cry powder trans ≈60

(brn) i H2O, EtOH

929 Copper(I) oxide Cu2O 1317-39-1 143.091 red-brn cub cry 1244 1800 dec 6.0 i H2O 930 Copper(I) selenide Cu2Se 20405-64-5 206.05 blue-blk tetr cry 1113 6.84 i H2O; s acid 931 Copper(I) sulfide Cu2S 22205-45-4 159.157 blue-blk orth cry 1129 5.6 i H2O; sl acid 932 Copper(I) sulfite hemihydrate Cu2SO3 ∙ 0.5H2O 13982-53-1* 216.164 wh-yel hex cry sl H2O; s acid, alk; i

EtOH, eth 933 Copper(I) sulfite monohydrate Cu2SO3 ∙ H2O 35788-00-2 225.171 cry 3.83 sl H2O; s HCl 934 Copper(I) telluride Cu2Te 12019-52-2 254.69 blue hex cry 1127 4.6 935 Copper(I) thiocyanate CuSCN 1111-67-7 121.629 wh-yel amorp

powder 1084 2.85 i H2O, dil acid,

EtOH, ace; s eth 936 Copper(I,II) sulfite dihydrate Cu2SO3 ∙ CuSO3 ∙ 2H2O 13814-81-8 386.795 red prisms or

powder i H2O, EtOH; s HCl

937 Copper(II) acetate Cu(C2H3O2)2 142-71-2 181.635 blue-grn hyg powder

938 Copper(II) acetate monohydrate Cu(C2H3O2)2 ∙ H2O 6046-93-1 199.650 grn monocl cry 115 240 dec 1.88 s H2O, EtOH; sl eth 939 Copper(II) acetate metaarsenite Cu(C2H3O2)2 ∙ 3Cu(AsO2)2 12002-03-8 1013.795 grn cry powder i H2O; reac acid 940 Copper(II) basic acetate Cu(C2H3O2)2 ∙ CuO ∙

6H2O 52503-64-7 369.271 blue-grn cry or

powder sl H2O, EtOH; s dil

acid, NH4OH 941 Copper(II) acetylide CuC2 12540-13-5 87.567 brn-blk solid; exp exp 100 942 Copper(II) arsenate Cu3(AsO4)2 7778-41-8 468.476 blue-grn cry i H2O, EtOH; s dil

acid 943 Copper(II) arsenite CuHAsO3 10290-12-7 187.474 yel-grn powder i H2O, EtOH; s acid 944 Copper(II) azide Cu(N3)2 14215-30-6 147.586 brn orth cry; exp ≈2.6 945 Copper(II) borate Cu(BO2)2 39290-85-2 149.166 blue-grn powder 3.859 i H2O; s acid 946 Copper(II) bromide CuBr2 7789-45-9 223.354 blk monocl cry;

hyg 498 900 4.710 12625 vs H2O; s EtOH,

ace; i bz, eth 947 Copper(II) butanoate monohydrate Cu(C4H7O2)2 ∙ H2O 540-16-9 255.756 grn monocl plates s H2O, diox, bz; sl

EtOH 948 Copper(II) carbonate CuCO3 1184-64-1 123.555 cry i H2O 949 Copper(II) carbonate hydroxide CuCO3 ∙ Cu(OH)2 12069-69-1 221.116 grn monocl cry 200 dec 4.0 i H2O, EtOH; s dil

acid 950 Copper(II) chlorate hexahydrate Cu(ClO3)2 ∙ 6H2O 14721-21-2 338.540 blue-grn hyg cry 65 100 dec 16418 vs EtOH 951 Copper(II) chloride CuCl2 7447-39-4 134.452 yel-brn monocl

cry; hyg 598 993 3.4 75.725 s EtOH, ace

952 Copper(II) chloride dihydrate CuCl2 ∙ 2H2O 10125-13-0 170.483 grn-blue orth cry; hyg

100 dec 2.51 75.720 vs EtOH, MeOH; s ace; i eth

953 Copper(II) chloride hydroxide Cu2(OH)3Cl 1332-65-6 213.567 pale grn cry i H2O; s acid 954 Copper(II) chromate CuCrO4 13548-42-0 179.540 red-brn cry i H2O; s EtOH 955 Copper(II) basic chromate CuCrO4 ∙ 2Cu(OH)2 12433-14-6 374.661 brn pow dec 260 i H2O; s HNO3 956 Copper(II) chromite CuCr2O4 12018-10-9 231.536 gray-blk tetr cry 5.4 i H2O, dil acid 957 Copper(II) citrate hemipentahydrate Cu2C6H4O7 ∙ 2.5H2O 10402-15-0 360.221 blue-grn cry 100 dec sl H2O; s dil acid 958 Copper(II) cyanide Cu(CN)2 14763-77-0 115.580 grn powder i H2O; s acid, alk 959 Copper(II) cyclohexanebutanoate Cu(C10H17O2)2 2218-80-6 402.028 powder 126 dec 960 Copper(II) dichromate dihydrate CuCr2O7 ∙ 2H2O 13675-47-3 315.565 red-brn tricl cry 2.286 vs H2O 961 Copper(II) ethanolate Cu(C2H5O)2 2850-65-9 153.667 blue hyg solid 120 dec i os 962 Copper(II) ethylacetoacetate Cu(C2H5CO2CHCOCH3)2 14284-06-1 321.813 grn cry 192 s EtOH, chl

963 Copper(II) 2-ethylhexanoate Cu(C8H15O2)2 149-11-1 349.953 powder 252 dec 964 Copper(II) ferrate CuFe2O4 12018-79-0 239.234 blk cry 965 Copper(II) ferrocyanide Cu2Fe(CN)6 13601-13-3 339.041 red-br cub cry or

powder 2.2 i H2O, acid, os

966 Copper(II) ferrous sulfide CuFeS2 1308-56-1 183.521 yel tetr cry 950 4.2 i H2O, HCl; s HNO3 967 Copper(II) fluoride CuF2 7789-19-7 101.543 wh monocl cry 836 1676 4.23 0.075

968 Copper(II) fluoride dihydrate CuF2 ∙ 2H2O 13454-88-1 137.574 blue monocl cry 130 dec 2.934 0.07525 969 Copper(II) formate Cu(CHO2)2 544-19-4 153.581 blue cry 12.5

20 i os 970 Copper(II) formate tetrahydrate Cu(CHO2)2 ∙ 4H2O 5893-61-8 225.641 blue monocl cry 12.5 sl EtOH; i os 971 Copper(II) gluconate CuC12H22O14 527-09-3 453.841 bl-grn cry 156 sl EtOH; i os 972 Copper(II) hexafluoro-2,4-

pentanedioate Cu(CF3COCHCOCF3)2 14781-45-4 477.648 cry 98 220 dec s MeOH, ace, tol

973 Copper(II) hexafluorosilicate tetrahydrate

CuSiF6 ∙ 4H2O 12062-24-7 277.684 blue monocl cry dec 2.56 99.717 sl EtOH

974 Copper(II) hydroxide Cu(OH)2 20427-59-2 97.561 blue-grn powder 3.37 i H2O; s acid, conc alk

975 Copper(II) iodate Cu(IO3)2 13454-89-2 413.351 grn monocl cry dec 5.241 0.15 20 s dil acid

976 Copper(II) iodate monohydrate Cu(IO3)2 ∙ H2O 13454-90-5 431.367 blue tricl cry 248 dec 4.872 0.1520 s dil H2SO4 977 Copper(II) molybdate CuMoO4 13767-34-5 223.48 grn cry ≈500 3.4 0.038 978 Copper(II) nitrate Cu(NO3)2 3251-23-8 187.555 blue-grn orth cry;

hyg 255 subl 14525 s diox; reac eth

979 Copper(II) nitrate trihydrate Cu(NO3)2 ∙ 3H2O 10031-43-3 241.602 blue rhomb cry 114 170 dec 2.32 14525 vs EtOH 980 Copper(II) nitrate hexahydrate Cu(NO3)2 ∙ 6H2O 13478-38-1 295.647 blue rhomb cry;

hyg 2.07 14525 s EtOH

981 Copper(II) oleate Cu(C18H33O2)2 1120-44-1 626.453 blue-grn solid i H2O; sl EtOH; s eth

982 Copper(II) oxalate CuC2O4 814-91-5 151.565 blue-wh powder 310 dec 0.0026 20 i EtOH, eth; s

NH4OH 983 Copper(II) oxalate hemihydrate CuC2O4 ∙ 0.5H2O 814-91-5* 144.573 blue-wh cry 200 dec 0.002620 s NH4OH 984 Copper(II) oxide CuO 1317-38-0 79.545 blk powder or

monocl cry 1227 6.31 i H2O, EtOH; s dil

acid 985 Copper(II) 2,4-pentanedioate Cu(CH3COCHCOCH3)2 13395-16-9 261.762 blue powder 284 dec subl sl H2O; s chl 986 Copper(II) oxychloride

hemiheptahydrate CuCl2 ∙ 3CuO ∙ 3.5H2O 1332-40-7 blue-grn pow dec 140 i H2O; s acid,

NH4OH 987 Copper(II) perchlorate Cu(ClO4)2 13770-18-8 262.447 grn hyg cry 130 dec 146

30 s eth, diox; i bz, ctc 988 Copper(II) perchlorate hexahydrate Cu(ClO4)2 ∙ 6H2O 10294-46-9 370.539 blue monocl cry;

hyg 82 120 dec 2.22 14630 vs EtOH, HOAc,

ace; sl eth 989 Copper(II) phosphate Cu3(PO4)2 7798-23-4 380.581 blue-grn tricl cry i H2O; s acid,

NH4OH 990 Copper(II) phosphate trihydrate Cu3(PO4)2 ∙ 3H2O 10031-48-8 434.627 blue-grn orth cry i H2O; s acid,

NH4OH 991 Copper(II) phthalocyanine CuC32H16N8 147-14-8 576.069 bl-purp cry i H2O, EtOH; s conc

H2SO4 992 Copper(II) selenate pentahydrate CuSeO4 ∙ 5H2O 10031-45-5 296.58 blue tricl cry 80 dec 2.56 27.425 s acid, NH4OH; sl

ace; i EtOH 993 Copper(II) selenide CuSe 1317-41-5 142.51 blue-blk needles

or plates 550 dec 5.99 reac acid

994 Copper(II) selenite dihydrate CuSeO3 ∙ 2H2O 15168-20-4 226.54 blue orth cry 3.31 i H2O; s acid, NH4OH

995 Copper(II) silicate dihydrate CuSiO3 ∙ 2H2O 26318-99-0 175.661 grn-blue orth cry 996 Copper(II) stannate CuSnO3 12019-07-7 230.254 blue pow 997 Copper(II) stearate Cu(C18H35O2)2 660-60-6 630.485 blue-grn amorp

powder ≈250 i H2O, EtOH, eth; s

py 998 Copper(II) sulfate CuSO4 7758-98-7 159.609 wh-grn amorp

powder or rhomb cry

560 dec 3.60 22.025 i EtOH

999 Copper(II) sulfate pentahydrate CuSO4 ∙ 5H2O 7758-99-8 249.685 blue tricl cry 110 dec 2.286 22.025 s MeOH; sl EtOH 1000 Copper(II) sulfate, basic Cu3(OH)4SO4 1332-14-5 354.730 grn rhomb cry 3.88 i H2O 1001 Copper(II) sulfide CuS 1317-40-4 95.611 blk hex cry trans 507 4.76 i H2O, EtOH, dil

acid, alk 1002 Copper(II) tartrate trihydrate CuC4H4O6 ∙ 3H2O 815-82-7 265.663 blue-grn powder sl H2O; s acid, alk 1003 Copper(II) telluride CuTe 12019-23-7 191.15 yel orth cry trans ≈400 7.09 1004 Copper(II) tellurite CuTeO3 13812-58-3 239.14 blk glassy solid i H2O 1005 Copper(II) tetrafluoroborate Cu(BF4)2 14735-84-3 237.155 solid s H2O 1006 Copper(II) titanate CuTiO3 12019-08-8 159.411 gray pow 1007 Copper(II) 1,1,1-trifluoro-2,4-

pentanedioate Cu(CF3COCHCOCH3)2 14324-82-4 369.705 blue-purp cry 197 dec 260 s EtOH, tol

1008 Copper(II) tungstate CuWO4 13587-35-4 311.38 yel-brn powder 7.5 1009 Copper(II) tungstate dihydrate CuWO4 ∙ 2H2O 13587-35-4* 347.41 grn powder i H2O; sl HOAc;

reac conc acid 1010 Copper(II) vanadate Cu(VO) 12789-09-2 261.425 powder

1011 Curium Cm 7440-51-9 247 silv metal; hex or cub

1345 13.51

1012 Dysprosium Dy 7429-91-6 162.500 silv metal; hex 1412 2567 8.55 s dil acid 1013 Dysprosium boride DyB4 12310-43-9 205.744 tetr cry 2500 6.98 1014 Dysprosium nitride DyN 12019-88-4 176.507 cub cry 9.93 1015 Dysprosium silicide DySi2 12133-07-2 218.671 orth cry 1550 5.2 1016 Dysprosium(II) bromide DyBr2 83229-05-4 322.308 blk solid 1017 Dysprosium(II) chloride DyCl2 13767-31-2 233.406 blk cry 721 dec reac H2O 1018 Dysprosium(II) iodide DyI2 36377-94-3 416.309 purp cry 659 reac H2O 1019 Dysprosium(III) acetate tetrahydrate Dy(C2H3O2)3 ∙ 4H2O 15280-55-4 411.693 yel needles dec 120 s H2O; sl EtOH 1020 Dysprosium(III) bromide DyBr3 14456-48-5 402.212 wh hyg cry 879 s H2O 1021 Dysprosium(III) carbonate

tetrahydrate Dy2(CO3)3 ∙ 4H2O 38245-35-1 577.088 wh cry pow i H2O

1022 Dysprosium(III) chloride DyCl3 10025-74-8 268.859 wh or yel cry 718 1530 3.67 s H2O, MeOH 1023 Dysprosium(III) chloride

hexahydrate DyCl3 ∙ 6H2O 15059-52-6 376.950 bright yel cry dec 162

1024 Dysprosium(III) fluoride DyF3 13569-80-7 219.495 grn cry 1157 1025 Dysprosium(III) hydride DyH3 13537-09-2 165.524 hex cry 7.1 1026 Dysprosium(III) hydroxide Dy(OH)3 1308-85-6 213.522 yel or wh needles 205 dec i H2O 1027 Dysprosium(III) iodide DyI3 15474-63-2 543.213 grn cry 978 1028 Dysprosium(III) nitrate

pentahydrate Dy(NO3)3 ∙ 5H2O 10143-38-1* 438.591 yel cry 88.6 208.425

1029 Dysprosium(III) oxide Dy2O3 1308-87-8 372.998 wh cub cry 2228 3900 7.81 s acid 1030 Dysprosium(III) sulfate octahydrate Dy2(SO4)3 ∙ 8H2O 10031-50-2 757.310 pale yel cry 110 sl H2O 1031 Dysprosium(III) sulfide Dy2S3 12133-10-7 421.195 red-brn monocl

cry 6.08

1032 Dysprosium(III) telluride Dy2Te3 12159-43-2 707.80 solid ≈1550 1033 Einsteinium Es 7429-92-7 252 metal; cub 860 1034 Erbium Er 7440-52-0 167.259 silv metal; hex 1529 2868 9.07 i H2O; s acid 1035 Erbium boride ErB4 12310-44-0 210.503 tetr cry 2450 7.0 1036 Erbium acetate tetrahydrate Er(C2H3O2)3 ∙ 4H2O 15280-57-6 416.452 pink or wh cry 2.11 s H2O 1037 Erbium bromide ErBr3 13536-73-7 406.971 viol hyg cry 950 ≈1460 s H2O, thf 1038 Erbium bromide hexahydrate ErBr3 ∙ 6H2O 14890-44-9 515.062 pink cry s H2O 1039 Erbium chloride ErCl3 10138-41-7 273.618 viol monocl cry;

hyg 776 4.1 s H2O

1040 Erbium chloride hexahydrate ErCl3 ∙ 6H2O 10025-75-9 381.709 pink hyg cry dec s H2O; sl EtOH 1041 Erbium fluoride ErF3 13760-83-3 224.254 pink orth cry 1146 7.8 i H2O 1042 Erbium hydride ErH3 13550-53-3 170.283 hex cry ≈7.6 1043 Erbium hydroxide Er(OH)3 14646-16-3 218.281 pink solid i H2O 1044 Erbium iodide ErI3 13813-42-8 547.972 viol hex cry; hyg 1014 ≈5.5 s H2O 1045 Erbium nitrate pentahydrate Er(NO3)3 ∙ 5H2O 10168-80-6* 443.350 red cry 130 dec 240.825 s EtOH, ace 1046 Erbium nitride ErN 12020-21-2 181.266 cub cry 10.6 1047 Erbium oxide Er2O3 12061-16-4 382.516 pink powder 2344 3920 8.64 i H2O; s acid 1048 Erbium silicide ErSi2 12020-28-9 223.430 orth cry 7.26 1049 Erbium sulfate Er2(SO4)3 13478-49-4 622.706 hyg powder dec 3.68 13

1050 Erbium sulfate octahydrate Er2(SO4)3 ∙ 8H2O 10031-52-4 766.828 pink monocl cry dec 3.20 1320 1051 Erbium sulfide Er2S3 12159-66-9 430.713 red-brn monocl

cry 1730 6.07

1052 Erbium telluride Er2Te3 12020-39-2 717.32 orth cry 1213 7.11 1053 Europium Eu 7440-53-1 151.964 soft silv metal; cub 822 1529 5.24 reac H2O 1054 Europium boride EuB6 12008-05-8 216.830 cub cry ≈2600 4.91 1055 Europium nitride EuN 12020-58-5 165.971 cub cry 8.7 1056 Europium silicide EuSi2 12434-24-1 208.135 tetr cry 1500 5.46 1057 Europium(II) bromide EuBr2 13780-48-8 311.772 wh cry 683 s H2O 1058 Europium(II) chloride EuCl2 13769-20-5 222.870 wh orth cry 731 4.9 s H2O 1059 Europium(II) fluoride EuF2 14077-39-5 189.961 grn-yel cub cry ≈1380 6.5 1060 Europium(II) iodide EuI2 22015-35-6 405.773 grn cry 580 s H2O 1061 Europium(II) selenide EuSe 12020-66-5 230.92 brn cub cry 6.45 1062 Europium(II) sulfate EuSO4 10031-54-6 248.027 col orth cry 4.99 i H2O 1063 Europium(II) sulfide EuS 12020-65-4 184.029 cub cry 5.7 1064 Europium(II) telluride EuTe 12020-69-8 279.56 blk cub cry 1526 6.48 1065 Europium(III) bromide EuBr3 13759-88-1 391.676 gray cry dec s H2O 1066 Europium(III) chloride EuCl3 10025-76-0 258.323 grn-yel needles 623 4.89 1067 Europium(III) chloride hexahydrate EuCl3 ∙ 6H2O 13759-92-7 366.414 wh-yel hyg cry 850 4.89 s H2O 1068 Europium(III) fluoride EuF3 13765-25-8 208.959 wh hyg cry 1276 i H2O 1069 Europium(III) iodide EuI3 13759-90-5 532.677 col cry; unstab ≈875 1070 Europium(III) nitrate hexahydrate Eu(NO3)3 ∙ 6H2O 10031-53-5 446.070 wh-pink hyg cry 85 dec 19325 1071 Europium(III) oxalate Eu(CO) 3269-12-3 567.985 wh solid i HO; s acid

1072 Europium(III) oxide Eu2O3 1308-96-9 351.926 pink powder 2291 3790 7.42 i H2O; s acid 1073 Europium(III) perchlorate

hexahydrate Eu(ClO4)3 ∙ 6H2O 36907-40-1 558.407 wh or pink cry s H2O, EtOH

1074 Europium(III) sulfate Eu2(SO4)3 13537-15-0 592.116 pale pink cry 4.99 2.1 20

1075 Europium(III) sulfate octahydrate Eu2(SO4)3 ∙ 8H2O 10031-52-4 736.238 pink cry 375 dec 2.120 1076 Fermium Fm 7440-72-4 257 metal 1527 1077 Fluorine F2 7782-41-4 37.997 pale yel gas -219.67 -188.11 1.553 g/L reac H2O 1078 Fluorine monoxide F2O 7783-41-7 53.996 col gas -223.8 -144.3 2.207 g/L sl H2O 1079 Difluorine dioxide F2O2 7783-44-0 69.996 red-oran solid,

unstab gas -163.5 -57 extrap 2.861 g/L

1080 Fluorine tetroxide F2O4 107782-11-6 101.995 red-brn solid -191 dec -185 1081 Fluorine nitrate FNO3 7789-26-6 81.003 col gas -175 -46 3.311 g/L reac H2O, EtOH,

eth; s ace 1082 Fluorine perchlorate FOClO3 10049-03-3 118.449 col gas; exp -167.3 -16 4.841 g/L reac H2O 1083 Francium Fr 7440-73-5 223.000 short-lived alkali

metal 21

1084 Gadolinium Gd 7440-54-2 157.25 silv metal; hex 1313 3273 7.90 s dil acid 1085 Gadolinium boride GdB6 12008-06-9 222.12 blk-brn cub cry 2510 5.31 1086 Gadolinium nitride GdN 25764-15-2 171.26 cub cry 9.10 1087 Gadolinium silicide GdSi2 12134-75-7 213.42 orth cry 1540 5.9 1088 Gadolinium(II) iodide GdI2 13814-72-7 411.06 bronze cry 831 1089 Gadolinium(II) selenide GdSe 12024-81-6 236.21 cub cry 2170 8.1 1090 Gadolinium(III) acetate tetrahydrate Gd(C2H3O2)2 ∙ 4H2O 15280-53-2 406.44 wh tricl cry dec 1.61 s H2O 1091 Gadolinium(III) bromide GdBr3 13818-75-2 396.96 wh monocl cry;

hyg 770 4.56

1092 Gadolinium(III) chloride GdCl3 10138-52-0 263.61 wh monocl cry; hyg

602 4.52 s H2O

1093 Gadolinium(III) chloride hexahydrate

GdCl3 ∙ 6H2O 19423-81-5 371.70 col hyg cry 2.424 s H2O

1094 Gadolinium(III) fluoride GdF3 13765-26-9 214.25 wh cry 1232 1095 Gadolinium(III) iodide GdI3 13572-98-0 537.96 yel cry 930 1096 Gadolinium(III) nitrate pentahydrate Gd(NO3)3 ∙ 5H2O 52788-53-1 433.34 wh cry 92 dec 2.41 19025 1097 Gadolinium(III) nitrate hexahydrate Gd(NO3)3 ∙ 6H2O 19598-90-4 451.36 hyg tricl cry 91 dec 2.33 19025 s EtOH 1098 Gadolinium(III) oxalate decahydrate Gd2(C2O4)3 ∙ 10H2O 22992-15-0 758.71 wh monocl pow dec 110 i H2O; sl acid 1099 Gadolinium(III) oxide Gd2O3 12064-62-9 362.50 wh hyg powder 2339 3900 7.41 i H2O; s acid 1100 Gadolinium(III) sulfate Gd2(SO4)3 13628-54-1 602.69 col cry 500 dec 4.1 2.60

20 sl H2O 1101 Gadolinium(III) sulfate octahydrate Gd2(SO4)3 ∙ 8H2O 13450-87-8 746.81 col monocl cry 400 dec 4.14 2.320 sl H2O 1102 Gadolinium(III) sulfide Gd2S3 12134-77-9 410.70 yel cub cry 6.1 1103 Gadolinium(III) telluride Gd2Te3 12160-99-5 697.30 orth cry 1255 7.7 1104 Gallium Ga 7440-55-3 69.723 silv liq or gray

orth cry 29.7646 2229 5.91 reac alk

1105 Gallium antimonide GaSb 12064-03-8 191.483 brn cub cry 712 5.6137 1106 Gallium arsenide GaAs 1303-00-0 144.645 gray cub cry 1238 5.3176 1107 Gallium nitride GaN 25617-97-4 83.730 gray hex cry >2500 6.1 1108 Gallium phosphide GaP 12063-98-8 100.697 yel cub cry 1457 4.138 1109 Gallium suboxide Ga2O 12024-20-3 155.445 brn powder >660 >800 dec 4.77 1110 Gallium(II) chloride GaCl2 24597-12-4 140.629 wh orth cry 172.4 535 2.74 1111 Gallium(II) selenide GaSe 12024-11-2 148.68 hex cry 960 5.03 1112 Gallium(II) sulfide GaS 12024-10-1 101.788 hex cry 965 3.86 1113 Gallium(II) telluride GaTe 12024-14-5 197.32 monocl cry 824 5.44 1114 Gallium(III) bromide GaBr3 13450-88-9 309.435 wh orth cry 123 279 3.69 1115 Gallium(III) chloride GaCl3 13450-90-3 176.082 col needles or gl

solid 77.9 201 2.47

1116 Gallium(III) fluoride GaF3 7783-51-9 126.718 wh powder or col needles

>1000 4.47 i H2O

1117 Gallium(III) fluoride trihydrate GaF3 ∙ 3H2O 22886-66-4 180.764 wh cry >140 dec sl H2O 1118 Gallium(III) hydride GaH3 13572-93-5 72.747 visc liq -15 ≈0 dec 1119 Gallium(III) hydroxide Ga(OH)3 12023-99-3 120.745 unstab prec 1120 Gallium(III) iodide GaI3 13450-91-4 450.436 monocl cry 212 340 4.5 1121 Gallium(III) nitrate Ga(NO3)3 13494-90-1 255.738 wh cry powder s H2O, EtOH, eth 1122 Gallium(III) oxide Ga2O3 12024-21-4 187.444 wh cry 1807 ≈6.0 s hot acid 1123 Gallium(III) oxide hydroxide GaOOH 20665-52-5 102.730 orth cry 5.23 1124 Gallium(III) 2,4-pentanedioate Ga(CH3COCHCOCH3)3 14405-43-7 367.047 wh powder 193 subl 1.42 1125 Gallium(III) perchlorate

hexahydrate Ga(ClO4)3 ∙ 6H2O 17835-81-3 476.166 cry dec 175

1126 Gallium(III) selenide Ga2Se3 12024-24-7 376.33 cub cry 937 4.92 1127 Gallium(III) sulfate Ga2(SO4)3 13494-91-2 427.634 hex cry 1128 Gallium(III) sulfate octadecahydrate Ga2(SO4)3 ∙ 18H2O 13780-42-2 751.909 octahed cry s H2O, EtOH

1130 Gallium(III) telluride Ga2Te3 12024-27-0 522.25 cub cry 790 5.57 1131 Germanium Ge 7440-56-4 72.63 gray-wh cub cry 938.25 2833 5.3234 i H2O, dil acid, alk 1132 Germane GeH4 7782-65-2 76.67 col gas; flam -165 -88.1 3.133 g/L i H2O 1133 Digermane Ge2H6 13818-89-8 151.33 col liq; flam -109 29 1.98

1134 Trigermane Ge3H8 14691-44-2 225.98 col liq -105.6 110.5 2.20 -105 i H2O

1135 Tetragermane Ge4H10 14691-47-5 300.64 col liq 176.9 i H2O 1136 Pentagermane Ge5H12 15587-39-0 375.30 col liq 234 i H2O 1137 Bromogermane GeH3Br 13569-43-2 155.57 col liq -32 52 2.34 reac H2O 1138 Chlorogermane GeH3Cl 13637-65-5 111.12 col liq -52 28 1.75 reac H2O 1139 Chlorotrifluorogermane GeF3Cl 14188-40-0 165.09 gas -66.2 -20.3 6.747 g/L 1140 Dibromogermane GeH2Br2 13769-36-3 234.46 col liq -15 89 2.80 reac H2O 1141 Dichlorogermane GeH2Cl2 15230-48-5 145.56 col liq -68 69.5 1.90 reac H2O 1142 Dichlorodifluorogermane GeF2Cl2 24422-21-7 181.54 col gas -51.8 -2.8 7.419 g/L 1143 Dichlorodimethylgermane Ge(CH3)2Cl2 1529-48-2 173.62 liq -22 124 1.49 1144 Fluorogermane GeH3F 13537-30-9 94.66 col gas 3.868 g/L reac H2O 1145 Iodogermane GeH3I 13573-02-9 202.57 liq -15 ≈90 reac H2O 1146 Methylgermane GeH3CH3 1449-65-6 90.70 col gas -158 -23 3.706 g/L 1147 Tribromogermane GeHBr3 14779-70-5 313.36 col liq -25 dec reac H2O 1148 Trichlorogermane GeHCl3 1184-65-2 180.01 liq -71 75.3 1.93 reac H2O 1149 Trichlorofluorogermane GeCl3F 24422-20-6 198.00 liq -49.8 37.5 1150 Germanium(II) bromide GeBr2 24415-00-7 232.45 yel monocl cry 122 150 dec reac H2O 1151 Germanium(II) chloride GeCl2 10060-11-4 143.55 wh-yel hyg

powder dec reac H2O; s eth, bz

1152 Germanium(II) fluoride GeF2 13940-63-1 110.64 wh orth cry; hyg 110 130 dec 3.64 reac H2O 1153 Germanium(II) iodide GeI2 13573-08-5 326.45 oran-yel hex cry 428 550 dec 5.4 reac H2O 1154 Germanium(II) oxide GeO 20619-16-3 88.64 blk solid 700 dec 1155 Germanium(II) selenide GeSe 12065-10-0 151.60 gray orth cry or

brn powder 675 5.6

1156 Germanium(II) sulfide GeS 12025-32-0 104.71 gray orth cry 658 4.1 1157 Germanium(II) telluride GeTe 12025-39-7 200.24 cub cry 724 6.16 i H2O; s conc HNO3 1158 Germanium(IV) bromide GeBr4 13450-92-5 392.26 wh cry 26.1 186.35 3.132 reac H2O 1159 Germanium(IV) chloride GeCl4 10038-98-9 214.45 col liq -51.50 86.55 1.88 reac H2O; s bz, eth,

EtOH, ctc 1160 Germanium(IV) fluoride GeF4 7783-58-6 148.63 col gas -15 tp -36.5 sp 6.074 g/L reac H2O 1161 Germanium(IV) iodide GeI4 13450-95-8 580.26 red-oran cub cry 146 348 4.322 reac H2O 1162 Germanium(IV) nitride Ge3N4 12065-36-0 273.95 orth cry 900 dec i H2O, acid, aqua

regia 1163 Germanium(IV) oxide GeO2 1310-53-8 104.64 wh hex cry 1116 4.25 i H2O 1164 Germanium(IV) selenide GeSe2 12065-11-1 230.56 yel-oran orth cry 707 dec 4.56 1165 Germanium(IV) sulfide GeS2 12025-34-2 136.77 blk orth cry 530 3.01 1166 Gold Au 7440-57-5 196.967 soft yel metal 1064.18 2836 19.3 s aqua regia 1167 Bromoauric(III) acid pentahydrate HAuBr4 ∙ 5H2O 17083-68-0 607.667 red-brn hyg cry 27 s H2O, EtOH 1168 Chloroauric(III) acid tetrahydrate HAuCl4 ∙ 4H2O 16903-35-8 411.848 yel monocl cry;

hyg ≈3.9 vs H2O, EtOH; s eth

1169 Gold(I) bromide AuBr 10294-27-6 276.871 yel-gray tetr cry 165 dec 8.20 i H2O 1170 Gold(I) chloride AuCl 10294-29-8 232.420 yel orth cry 289 dec 7.6 0.00003120

1171 Gold(I) cyanide AuCN 506-65-0 222.985 yel hex cry dec 7.2 i H2O, EtOH, eth, dil acid

1172 Gold(I) iodide AuI 10294-31-2 323.871 yel-grn powder; tetr

120 dec 8.25 i H2O; s CN soln

1173 Gold(I) sulfide Au2S 1303-60-2 425.998 brn-blk cub cry; unstab

240 dec ≈11 i H2O, acid; s aqua regia

1174 Gold(III) bromide AuBr3 10294-28-7 436.679 red-br monocl cry ≈160 dec s H2O, EtOH 1175 Gold(III) chloride AuCl3 13453-07-1 303.326 red monocl cry >160 dec 4.7 68

1176 Gold(III) cyanide trihydrate Au(CN)3 ∙ 3H2O 535-37-5* 329.065 wh hyg cry 50 dec vs H2O; sl EtOH 1177 Gold(III) fluoride AuF3 14720-21-9 253.962 oran-yel hex cry >300 subl 6.75 1178 Gold(III) hydroxide Au(OH)3 1303-52-2 247.989 brn powder ≈100 dec i H2O; s acid 1179 Gold(III) iodide AuI3 31032-13-0 577.680 unstab grn powder 20 dec 1180 Gold(III) oxide Au2O3 1303-58-8 441.931 brn powder ≈150 dec i H2O; s acid 1181 Gold(III) selenate Au2(SeO4)3 10294-32-3 822.81 yel cry i H2O; s acid 1182 Gold(III) selenide Au2Se3 1303-62-4 630.81 blk amorp solid dec 4.65 s aqua regia 1183 Gold(III) sulfide Au2S3 1303-61-3 490.128 unstab blk powder 200 dec 1184 Hafnium Hf 7440-58-6 178.49 gray metal; hex 2233 4600 13.3 s HF 1185 Hafnium boride HfB2 12007-23-7 200.11 gray hex cry 3100 10.5 1186 Hafnium carbide HfC 12069-85-1 190.50 refrac cub cry ≈3000 12.2 1187 Hafnium hydride HfH2 12770-26-2 180.51 refrac tetr cry 11.4 1188 Hafnium nitride HfN 25817-87-2 192.50 yel-brn cub cry 3310 13.8 1189 Hafnium phosphide HfP 12325-59-6 209.46 hex cry 9.78

1190 Hafnium silicide HfSi2 12401-56-8 234.66 gray orth cry ≈1700 7.6 1191 Hafnocene dichloride Hf(C5H5)2Cl2 12116-66-4 379.58 col hyg cry 235 s bz, chl; sl thf, eth;

i hex 1192 Hafnium(II) bromide HfBr2 13782-95-1 338.30 blue-blk cry dec 400 1193 Hafnium(II) chloride HfCl2 13782-92-8 249.40 blk solid dec 400 1194 Hafnium(III) bromide HfBr3 13782-96-2 418.20 blue-blk cry dec 350 1195 Hafnium(III) chloride HfCl3 13782-93-9 284.85 blk solid dec 1196 Hafnium(III) iodide HfI3 13779-73-2 559.20 blk cry dec 1197 Hafnium(IV) bromide HfBr4 13777-22-5 498.11 wh cub cry 424 tp 323 sp 4.90 reac H2O 1198 Hafnium(IV) chloride HfCl4 13499-05-3 320.30 wh monocl cry 432 tp 317 sp reac H2O 1199 Hafnium(IV) fluoride HfF4 13709-52-9 254.48 wh monocl cry 1025 970 sp 7.1 reac H2O 1200 Hafnium(IV) iodide HfI4 13777-23-6 686.11 yel-oran cub cry 449 tp 394 sp 5.6 reac H2O 1201 Hafnium(IV) oxide HfO2 12055-23-1 210.49 wh cub cry 2800 ≈5400 9.68 i H2O 1202 Hafnium(IV) oxychloride

octahydrate HfOCl2 ∙ 8H2O 14456-34-9 409.52 wh tetr cry dec s H2O

1203 Hafnium(IV) selenide HfSe2 12162-21-9 336.41 brn hex cry 7.46 1204 Hafnium(IV) silicate HfSiO4 13870-13-8 270.57 tetr cry 2758 7.0 1205 Hafnium(IV) sulfate Hf(SO4)2 15823-43-5 370.62 wh cry >500 dec 1206 Hafnium(IV) sulfide HfS2 18855-94-2 242.62 purp-brn hex cry 6.03 1207 Hafnium(IV) titanate HfTiO4 12055-24-2 290.36 wh pow 1980 dec 1208 Helium He 7440-59-7 4.003 col gas -268.928 0.164 g/L sl H2O; i EtOH 1209 Holmium Ho 7440-60-0 164.930 silv metal; hex 1472 2700 8.80 s dil acid 1210 Holmium acetate Ho(C2H3O2)3 25519-09-9 342.062 yel cry dec 327 s H2O 1211 Holmium bromide HoBr3 13825-76-8 404.642 yel hyg cry 919 1470 1212 Holmium chloride HoCl3 10138-62-2 271.289 yel monocl cry;

hyg 720 1500 3.7 s H2O

1213 Holmium chloride hexahydrate HoCl3 ∙ 6H2O 14914-84-2 379.381 hyg yel cry 160 dec s H2O 1214 Holmium fluoride HoF3 13760-78-6 221.925 pink-yel orth cry;

hyg 1143 >2200 7.664 s H2O

1215 Holmium iodide HoI3 13813-41-7 545.643 yel hex cry 994 5.4 1216 Holmium nitrate pentahydrate Ho(NO3)3 ∙ 5H2O 14483-18-2 441.022 hyg oran cry s H2O, EtOH, ace 1217 Holmium nitride HoN 12029-81-1 178.937 cub cry 10.6 1218 Holmium oxalate decahydrate Ho2(C2O4)2 ∙ 10H2O 28965-57-3 774.070 yel solid dec 40 1219 Holmium oxide Ho2O3 12055-62-8 377.859 yel cub cry 2330 3900 8.41 s acid 1220 Holmium silicide HoSi2 12136-24-2 221.101 hex cry 7.1 1221 Holmium sulfide Ho2S3 12162-59-3 426.056 yel-oran monocl

cry 5.92

1222 Hydrazine N2H4 302-01-2 32.045 col oily liq 1.54 113.55 1.0036 vs H2O, EtOH, MeOH

1223 Hydrazine acetate N2H4 ∙ CH3COOH 13255-48-6 92.097 cry 100 1224 Hydrazine azide N2H4 ∙ HN3 14662-04-5 75.074 hyg wh prism 75 exp vs H2O 1225 Hydrazine monohydrate N2H4 ∙ H2O 7803-57-8 50.060 fuming liq -51.7 119 1.030 vs H2O, EtOH; i chl,

eth 1226 Hydrazine hydrobromide N2H4 ∙ HBr 13775-80-9 112.957 wh monocl cry

flakes 84 ≈190 dec 2.3 s H2O, EtOH

1227 Hydrazine hydrochloride N2H4 ∙ HCl 2644-70-4 68.506 wh orth cry 89 240 dec 1.5 s H2O; i os 1228 Hydrazine dihydrochloride N2H4 ∙ 2HCl 5341-61-7 104.967 wh orth cry 198 dec 1.42 s H2O; sl EtOH 1229 Hydrazine hydroiodide N2H4 ∙ HI 10039-55-1 159.957 hyg cry 125 s H2O 1230 Hydrazine nitrate N2H4 ∙ HNO3 13464-97-6 95.058 monocl cry; exp 70 vs H2O 1231 Hydrazine dinitrate N2H4 ∙ 2HNO3 13464-98-7 158.071 needles 104 dec 2035 s H2O 1232 Hydrazine perchlorate hemihydrate N2H4 ∙ HClO4 ∙ 0.5H2O 13762-65-7 solid 137 exp 1.94 reac H2O, s EtOH; i

eth, bz 1233 Hydrazine sulfate N2H4 ∙ H2SO4 10034-93-2 130.124 col orth cry 254 1.378 sl H2O; i EtOH 1234 Dihydrazine sulfate (N2H4)2 ∙ H2SO4 13464-80-7 162.169 hyg wh cry flakes 104 dec >180 20025 vs H2O; i os 1235 Hydrazoic acid HN3 7782-79-8 43.028 col liq; exp -80 35.7 s H2O 1236 Hydroxylamine H2NOH 7803-49-8 33.030 wh orth flakes or

needles 33.1 58 1.21 vs H2O, MeOH

1237 Hydroxylamine hydrobromide H2NOH ∙ HBr 41591-55-3 113.942 monocl cry 2.35 s H2O 1238 Hydroxylamine hydrochloride H2NOH ∙ HCl 5470-11-1 69.491 col monocl cry 159 dec exp 1.68 9425 vs H2O 1239 Hydroxylamine perchlorate H2NOH ∙ HClO4 133.489 orth cry 88 dec 120 1240 Hydroxylamine sulfate 2(H2NOH) ∙ H2SO4 10039-54-0 164.138 cry 170 vs H2O 1241 Hydrogen H2 1333-74-0 2.016 col gas; flam -259.16 -252.762 0.082 g/L sl H2O 1242 Hydrogen-d2 D2 7782-39-0 4.028 col gas -254.42 -249.48 0.164 g/L 1243 Hydrogen-t2 T2 10028-17-8 6.032 col gas -252.53 -248.11 0.246 g/L 1244 Hydrogen-d1 HD 13983-20-5 3.022 col gas -256.55 -251.02 0.123 g/L 1245 Hydrogen-t1 HT 14885-60-0 4.024 col gas -254.7 -249.6 1246 Hydrogen-d1,t1 DT 14885-61-1 5.030 col gas -253.5 -238.9 1247 Hydrogen bromide HBr 10035-10-6 80.912 col gas -86.80 -66.38 3.307 g/L vs H2O; s EtOH

1249 Hydrogen chloride HCl 7647-01-0 36.461 col gas -114.17 -85 1.490 g/L vs H2O 1250 Hydrogen chloride dihydrate HCl ∙ 2H2O 13465-05-9 72.492 col liq -17.7 1.46 1251 Hydrogen chloride-d DCl 7698-05-7 37.467 col gas -114.72 -84.4 s H2O 1252 Hydrogen cyanide HCN 74-90-8 27.026 col liq or gas -13.29 26 0.687620 vs H2O, EtOH; sl

eth 1253 Hydrogen fluoride HF 7664-39-3 20.006 col gas -83.36 20 0.818 g/L vs H2O, EtOH; sl

eth 1254 Hydrogen iodide HI 10034-85-2 127.912 col or yel gas -50.76 -35.55 5.228 g/L vs H2O; s os 1255 Hydrogen iodide-d DI 14104-45-1 128.918 col gas -51.93 -36.2 s H2O 1256 Hydrogen peroxide H2O2 7722-84-1 34.015 col liq -0.43 150.2 1.44 vs H2O 1257 Hydrogen selenide H2Se 7783-07-5 80.98 col gas; flam -65.73 -41.25 3.310 g/L s H2O 1258 Hydrogen sulfide H2S 7783-06-4 34.081 col gas; flam -85.5 -59.55 1.393 g/L s H2O 1259 Hydrogen disulfide H2S2 13465-07-1 66.146 col liq 70.7 1.334 1260 Hydrogen telluride H2Te 7783-09-7 129.62 col gas -49 -2 5.298 g/L s H2O, EtOH, alk 1261 Indium In 7440-74-6 114.818 soft wh metal 156.6 2027 7.31 s acid 1262 Indium antimonide InSb 1312-41-0 236.578 blk cub cry 524 5.7747 1263 Indium arsenide InAs 1303-11-3 189.740 gray cub cry 942 5.67 i acid 1264 Indium nitride InN 25617-98-5 128.825 brn hex cry 1100 6.88 1265 Indium phosphide InP 22398-80-7 145.792 blk cub cry 1062 4.81 sl acid 1266 Indium(I) bromide InBr 14280-53-6 194.722 oran-red orth cry 285 656 4.96 reac H2O 1267 Indium(I) chloride InCl 13465-10-6 150.271 yel cub cry 225 608 4.19 reac H2O 1268 Indium(I) iodide InI 13966-94-4 241.722 orth cry 364.4 712 5.32 1269 Indium(II) bromide InBr2 21264-43-7 274.626 orth cry 4.22 reac H2O 1270 Indium(II) chloride InCl2 13465-11-7 185.724 col orth cry 235 3.64 reac H2O 1271 Indium(II) sulfide InS 12030-14-7 146.883 red-brn orth cry 692 5.2 1272 Indium(III) bromide InBr3 13465-09-3 354.530 hyg yel-wh

monocl cry 420 4.74 41420

1273 Indium(III) chloride InCl3 10025-82-8 221.177 yel monocl cry; hyg

583 4.0 195.122 s EtOH

1274 Indium(III) chloride tetrahydrate InCl3 ∙ 4H2O 22519-64-8 293.239 wh cry s H2O 1275 Indium(III) fluoride InF3 7783-52-0 171.813 wh hex cry; hyg 1172 >1200 4.39 sl H2O; s dil acid 1276 Indium(III) fluoride trihydrate InF3 ∙ 3H2O 14166-78-0 225.859 wh cry 100 dec s H2O 1277 Indium(III) hydroxide In(OH)3 20661-21-6 165.840 cub cry 4.4 1278 Indium(III) iodide InI3 13510-35-5 495.531 yel-red monocl

cry; hyg 207 4.69 130822

1279 Indium(III) nitrate trihydrate In(NO3)3 ∙ 3H2O 13770-61-1 354.879 col cry dec 100 1280 Indium(III) oxide In2O3 1312-43-2 277.634 yel cub cry 1912 7.18 i H2O; s hot acid 1281 Indium(III) perchlorate octahydrate In(ClO4)3 ∙ 8H2O 13465-15-1 557.292 wh cry ≈80 200 dec 1282 Indium(III) phosphate InPO4 14693-82-4 209.789 wh orth cry 4.9 i H2O 1283 Indium(III) selenide In2Se3 1312-42-1 466.52 blk hex cry 660 5.8 1284 Indium(III) sulfate In2(SO4)3 13464-82-9 517.824 hyg wh powder 3.44 117

1285 Indium(III) sulfide In2S3 12030-24-9 325.831 oran cub cry 1050 4.45 1286 Indium(III) telluride In2Te3 1312-45-4 612.44 blk cub cry 667 5.75 1287 Iodine I2 7553-56-2 253.809 blue-blk plates 113.7 184.4 4.933 0.03

20 s bz, EtOH, eth, ctc, chl

1288 Iodic acid HIO3 7782-68-5 175.910 col orth cry 110 dec 4.63 308 25 i EtOH, eth

1289 Periodic acid dihydrate HIO4 ∙ 2H2O 10450-60-9 227.940 monocl hyg cry 122 dec s H2O, EtOH; sl eth 1290 Iodine tetroxide I2O4 12399-08-5 317.807 yel cry 130 dec >85 4.2 sl H2O 1291 Iodine pentoxide I2O5 12029-98-0 333.806 hyg wh cry ≈300 dec 4.98 253.4

20 i EtOH, eth, CS2 1292 Iodine hexoxide I2O6 65355-99-9 349.805 yel solid dec 150 reac H2O 1293 Iodine nonaoxide I4O9 73560-00-6 651.613 hyg yel powder 75 dec 1294 Iodine bromide IBr 7789-33-5 206.808 blk orth cry 40 116 dec 4.3 s H2O, EtOH, eth 1295 Iodine chloride ICl 7790-99-0 162.357 red cry or oily liq 27.38 94.4 dec 3.24 reac H2O; s EtOH 1296 Iodine trichloride ICl3 865-44-1 233.263 yel tricl cry; hyg 101 tp (16

atm) 64 sp dec 3.2 reac H2O; s EtOH,

bz 1297 Iodine fluoride IF 13873-84-2 145.902 wh pow (-78¯C) -14 dec 1298 Iodine trifluoride IF3 22520-96-3 183.899 yel solid, stable at

low temp -28 dec

1299 Iodine pentafluoride IF5 7783-66-6 221.896 yel liq 9.43 100.5 3.19 reac H2O 1300 Iodine heptafluoride IF7 16921-96-3 259.893 col gas 6.5 tp 4.8 sp 10.62 g/L s H2O 1301 Iodosyl trifluoride IOF3 19058-78-7 199.898 hyg col needles dec >110 reac H2O 1302 Iodosyl pentafluoride IOF5 16056-61-4 237.895 col liq 4.5 1303 Iodyl trifluoride IO2F3 25402-50-0 215.898 yel solid 41 subl 1304 Periodyl fluoride IO3F 30708-86-2 193.900 col cry dec >100 1305 Iridium Ir 7439-88-5 192.217 silv-wh metal; cub 2446 4428 22.56220 s aqua regia 1306 Iridium carbonyl Ir4(CO)12 11065-24-0 1104.989 yel cry 210 dec 1307 Iridium(III) bromide IrBr3 10049-24-8 431.929 red-brn monocl

cry 6.82 i H2O, acid, alk

1308 Iridium(III) bromide tetrahydrate IrBr3 ∙ 4H2O 10049-24-8* 503.991 grn-brn cry s H2O; i EtOH 1309 Iridium(III) chloride IrCl3 10025-83-9 298.576 brn monocl cry 763 dec 5.30 i H2O, acid, alk 1310 Iridium(III) fluoride IrF3 23370-59-4 249.212 blk hex cry 250 dec ≈8.0 i H2O, dil acid 1311 Iridium(III) iodide IrI3 7790-41-2 572.930 dark brn monocl

cry ≈7.4 i H2O, acid, bz, chl;

s alk 1312 Iridium(III) oxide Ir2O3 1312-46-5 432.432 blue-blk cry 1000 dec i H2O; sl hot HCl 1313 Iridium(III) 2,4-pentanedioate Ir(CH3COCHCOCH3)3 15635-87-7 489.541 oran-yel cry 270 subl sl H2O; s tol, chl,

ace, MeOH 1314 Iridium(III) sulfide Ir2S3 12136-42-4 480.629 orth cry 10.2 1315 Iridium(IV) chloride IrCl4 10025-97-5 334.029 brn hyg solid ≈700 dec s H2O, EtOH 1316 Iridium(IV) oxide IrO2 12030-49-8 224.216 brn tetr cry 1100 dec 11.7 1317 Iridium(IV) sulfide IrS2 12030-51-2 256.347 orth cry 9.3 1318 Iridium(VI) fluoride IrF6 7783-75-7 306.207 yel cub cry; hyg 44 53.6 4.8 reac H2O 1319 Iron Fe 7439-89-6 55.845 silv-wh or gray

met 1538 2861 7.87 s dil acid

1320 Ferrocene Fe(C5H5)2 102-54-5 186.031 oran needles 172.5 249 i H2O; s EtOH, eth, bz, dil HNO3

1321 Tetracarbonyldihydroiron Fe(CO)4H2 12002-28-7 169.902 col liq, stab low temp

-70 dec -20 s alk

1322 Iron pentacarbonyl Fe(CO)5 13463-40-6 195.896 yel oily liq; flam -20.5 103 1.46 i H2O; s eth, bz, ace 1323 Iron nonacarbonyl Fe2(CO)9 15321-51-4 363.781 oran-yel cry 100 dec 2.85 1324 Iron dodecacarbonyl Fe3(CO)12 12088-65-2 503.656 dark grn cry 140 2.00 1325 Iron arsenide FeAs 12044-16-5 130.767 gray orth cry 1030 7.85 1326 Iron boride (FeB) FeB 12006-84-7 66.656 refrac solid; orth 1658 ≈7 1327 Iron boride (Fe2B) Fe2B 12006-86-9 122.501 refrac solid; tetr 1389 7.3 1328 Iron carbide Fe3C 12011-67-5 179.546 gray cub cry 1227 7.694 1329 Iron phosphide (FeP) FeP 26508-33-8 86.819 rhom cry 6.07 1330 Iron phosphide (Fe2P) Fe2P 1310-43-6 142.664 gray hex needles 1370 6.8 i H2O, dil acid, alk 1331 Iron phosphide (Fe3P) Fe3P 12023-53-9 198.509 gray solid 1100 6.74 i H2O 1332 Iron disulfide FeS2 1317-66-4 119.975 blk cub cry >600 dec 5.02 i H2O 1333 Iron silicide FeSi 12022-95-6 83.931 gray cub cry 1410 6.1 1334 Iron disilicide FeSi2 12022-99-0 112.016 gray tetr cry 1220 4.74 1335 Iron(II) acetate Fe(C2H3O2)2 3094-87-9 173.934 wh cry 190 dec s H2O 1336 Iron(II) acetate tetrahydrate Fe(C2H3O2)2 ∙ 4H2O 3094-87-9* 245.994 grn cry dec s H2O, EtOH 1337 Iron(II) aluminate Fe(AlO2)2 12068-49-4 173.806 blk cub cry 4.3 1338 Iron(II) arsenate Fe3(AsO4)2 10102-50-8 445.373 grn powder i H2O 1339 Iron(II) arsenate hexahydrate Fe3(AsO4)2 ∙ 6H2O 10102-50-8* 553.465 grn amorp powder dec i H2O; s acid 1340 Iron(II) bromide FeBr2 7789-46-0 215.653 yel-brn hex cry;

hyg 691 dec 4.636 12025 vs EtOH

1341 Iron(II) bromide hexahydrate FeBr2 ∙ 6H2O 13463-12-2 323.744 grn hyg cry 27 dec 4.64 12025 s EtOH 1342 Iron(II) carbonate FeCO3 563-71-3 115.854 gray-brn hex cry 3.944 0.000062

1343 Iron(II) chloride FeCl2 7758-94-3 126.751 wh hex cry; hyg 677 1023 3.16 65.0 25 vs EtOH, ace; sl bz

1344 Iron(II) chloride dihydrate FeCl2 ∙ 2H2O 16399-77-2 162.782 wh-grn monocl cry

120 dec 2.39 65.025

1345 Iron(II) chloride tetrahydrate FeCl2 ∙ 4H2O 13478-10-9 198.813 grn monocl cry 105 dec 1.93 65.025 s EtOH 1346 Iron(II) chromite FeCr2O4 1308-31-2 223.835 blk cub cry 5.0 1347 Iron(II) fluoride FeF2 7789-28-8 93.842 wh tetr cry 1100 4.09 sl H2O; s dil HF; i

EtOH, eth 1348 Iron(II) fluoride tetrahydrate FeF2 ∙ 4H2O 13940-89-1 165.904 col hex cry 2.20 1349 Iron(II) hydroxide Fe(OH)2 18624-44-7 89.860 wh-grn hex cry 3.4 0.000052

1350 Iron(II) iodide FeI2 7783-86-0 309.654 red-viol hex cry; hyg

594 5.3 s H2O, EtOH, eth

1351 Iron(II) iodide tetrahydrate FeI2 ∙ 4H2O 7783-86-0* 381.716 blk hyg leaflets 90 dec 2.87 s H2O, EtOH 1352 Iron(II) molybdate FeMoO4 13718-70-2 215.78 brn-yel monocl

cry 1115 5.6 i H2O

1353 Iron(II) nitrate Fe(NO3)2 14013-86-6 179.854 grn solid 87.5 25

1354 Iron(II) nitrate hexahydrate Fe(NO3)2 ∙ 6H2O 14013-86-6* 287.946 grn solid 60 dec 87.525 1355 Iron(II) orthosilicate Fe2SiO4 10179-73-4 203.774 brn orth cry 4.30 1356 Iron(II) oxalate dihydrate FeC2O4 ∙ 2H2O 6047-25-2 179.894 yel cry 150 dec 2.28 0.07825 s acid 1357 Iron(II) oxide FeO 1345-25-1 71.844 blk cub cry 1377 6.0 i H2O, alk; s acid 1358 Iron(II) 2,4-pentanedioate Fe(CH3COCHCOCH3)2 14024-17-0 254.061 oran-brn cry 170 subl sl bz, tol 1359 Iron(II) perchlorate Fe(ClO4)2 13933-23-8 254.746 grn-wh hyg

needles >100 dec 21025

1360 Iron(II) phosphate octahydrate Fe3(PO4)2 ∙ 8H2O 14940-41-1 501.600 gray-blue monocl cry; hyg

2.58 i H2O; s acid

1361 Iron(II) selenide FeSe 1310-32-3 134.81 blk hex cry 6.7 i H2O 1362 Iron(II) sulfate FeSO4 7720-78-7 151.908 wh orth cry; hyg 3.65 29.5

1363 Iron(II) sulfate monohydrate FeSO4 ∙ H2O 17375-41-6 169.923 wh-yel monocl cry 300 dec 3.0 29.525

1364 Iron(II) sulfate heptahydrate FeSO4 ∙ 7H2O 7782-63-0 278.014 blue-grn monocl cry

≈60 dec 1.895 29.525 i EtOH

1365 Iron(II) sulfide FeS 1317-37-9 87.910 col hex or tetr cry; hyg

1188 dec 4.7 i H2O; reac acid

1366 Iron(II) tantalate Fe(TaO3)2 12140-41-9 513.737 brn tetr cry 7.33 1367 Iron(II) tartrate FeC4H4O6 203.916 wh cry 0.88 vs acid; s NH4OH 1368 Iron(II) telluride FeTe 12125-63-2 183.45 tetr cry 914 6.8 1369 Iron(II) thiocyanate trihydrate Fe(SCN)2 ∙ 3H2O 6010-09-9 226.055 grn monocl cry s H2O, EtOH, eth 1370 Iron(II) titanate FeTiO3 12168-52-4 151.710 blk rhomb cry ≈1470 4.72 1371 Iron(II) tungstate FeWO4 13870-24-1 303.68 monocl cry 7.51 1372 Iron(II,III) oxide Fe3O4 1317-61-9 231.533 blk cub cry or

amorp powder 1597 5.17 i H2O; s acid

1373 Iron(III) acetate, basic FeOH(C2H3O2)2 10450-55-2 190.941 brn-red amorp powder

i H2O; s EtOH, acid

1374 Iron(III) ammonium citrate Fe(NH4)3(C6H5O7)2 1185-57-5 488.160 red or brn pow; hyg

s H2O; i EtOH

1375 Iron(III) arsenate dihydrate FeAsO4 ∙ 2H2O 10102-49-5 230.795 grn-brn powder dec 3.18 i H2O; s dil acid 1376 Iron(III) bromide FeBr3 10031-26-2 295.557 dark red hex cry;

hyg dec 4.5 45525 s EtOH, eth

1377 Iron(III) chloride FeCl3 7705-08-0 162.204 grn hex cry; hyg 307.6 ≈316 2.90 91.2 25 s EtOH, eth, ace

1378 Iron(III) chloride hexahydrate FeCl3 ∙ 6H2O 10025-77-1 270.295 yel-oran monocl cry; hyg

37 dec 1.82 91.225 s EtOH, eth, ace

1379 Iron(III) chromate Fe2(CrO4)3 10294-52-7 459.671 yel powder i H2O, EtOH; s acid 1380 Iron(III) citrate pentahydrate FeC6H5O7 ∙ 5H2O 3522-50-7 335.021 red-brn cry s H2O; i EtOH 1381 Iron(III) dichromate Fe2(Cr2O7)3 10294-53-8 759.654 red-brn solid s H2O, acid 1382 Iron(III) ferrocyanide Fe4[Fe(CN)6]3 14038-43-8 859.229 dark blue powder 1.80 i H2O, dil acid, os 1383 Iron(III) fluoride FeF3 7783-50-8 112.840 grn hex cry >1000 3.87 5.92

25 i EtOH, eth, bz 1384 Iron(III) fluoride trihydrate FeF3 ∙ 3H2O 15469-38-2 166.886 yel-brn tetr cry 2.3 5.9225 1385 Iron(III) formate Fe(CHO2)3 555-76-0 190.897 red-yel cry powder s H2O; sl EtOH 1386 Iron(III) hydroxide Fe(OH)3 1309-33-7 106.867 yel monocl cry 3.12 1387 Iron(III) hydroxide oxide FeO(OH) 20344-49-4 88.852 red-brn orth cry 4.26 i H2O; s acid 1388 Iron(III) metavanadate Fe(VO3)3 65842-03-7 352.665 gray-brn powder i H2O, EtOH; s acid 1389 Iron(III) nitrate Fe(NO3)3 10421-48-4 241.860 cry 82.5

1390 Iron(III) nitrate hexahydrate Fe(NO3)3 ∙ 6H2O 13476-08-9 349.951 viol cub cry 35 dec 82.520 1391 Iron(III) nitrate nonahydrate Fe(NO3)3 ∙ 9H2O 7782-61-8 403.997 viol-gray hyg cry 47 dec 1.68 82.520 vs EtOH, ace 1392 Iron(III) oxalate Fe2(C2O4)3 19469-07-9 375.747 yel amorp powder 100 dec s H2O, acid; i alk 1393 Iron(III) oxide Fe2O3 1309-37-1 159.688 red-brn hex cry 1539 5.25 i H2O; s acid 1394 Iron(III) 2,4-pentanedioate Fe(CH3COCHCOCH3)3 14024-18-1 353.169 red-oran cry 179 5.24 sl H2O; s os 1395 Iron(III) perchlorate hexahydrate Fe(ClO4)3 ∙ 6H2O 32963-81-8 462.288 viol cry 1396 Iron(III) phosphate dihydrate FePO4 ∙ 2H2O 10045-86-0 186.847 gray-wh orth cry 2.87 i H2O; s HCl 1397 Iron(III) pyrophosphate

nonahydrate Fe4(P2O7)3 ∙ 9H2O 10058-44-3 907.348 yel powder i H2O; s acid

1398 Iron(III) hypophosphite Fe(H2PO2)3 7783-84-8 250.811 wh-gray powder i H2O 1399 Iron(III) sodium pyrophosphate FeNaP2O7 10045-87-1 252.778 wh powder 1.5 i H2O; s HCl 1400 Iron(III) sulfate Fe2(SO4)3 10028-22-5 399.878 gray-wh rhomb

cry; hyg 3.10 44020 sl EtOH; i ace

1401 Iron(III) sulfate nonahydrate Fe2(SO4)3 ∙ 9H2O 13520-56-4 562.015 yel hex cry 400 dec 2.1 44020 1402 Iron(III) thiocyanate Fe(SCN)3 4119-52-2 230.092 red-viol hyg cry dec s H2O, EtOH, ace; i

tol, chl 1403 Krypton Kr 7439-90-9 83.798 col gas -157.37 -153.415 3.425 g/L sl H2O 1404 Krypton difluoride KrF2 13773-81-4 121.795 col tetr cry ≈25 dec 3.24 reac H2O 1405 Krypton fluoride

hexafluoroantimonate KrFSb2F11 39578-36-4 555.299 wh solid dec 45

1406 Lanthanum La 7439-91-0 138.905 silv metal; hex 920 3464 6.15 s dil acid 1407 Lanthanum aluminum oxide LaAlO3 12003-65-5 213.885 wh rhom cry trans cub 500 1408 Lanthanum boride LaB6 12008-21-8 203.771 blk cub cry; refrac 2715 4.76 1409 Lanthanum bromate nonahydrate LaBrO3 ∙ 9H2O 684.749 hex cry dec 100 5.06 vs H2O 1410 Lanthanum bromide LaBr3 13536-79-3 378.617 wh hex cry; hyg 788 5.1 s H2O 1411 Lanthanum carbide LaC2 12071-15-7 162.926 tetr cry 2360 5.29 1412 Lanthanum carbonate octahydrate La2(CO3)3 ∙ 8H2O 6487-39-4 601.960 wh cry powder 2.6 i H2O; s dil acid 1413 Lanthanum chloride LaCl3 10099-58-8 245.264 wh hex cry; hyg 858 3.84 95.7

1414 Lanthanum chloride heptahydrate LaCl3 ∙ 7H2O 20211-76-1 371.371 wh tricl cry; hyg 91 dec 95.725 s EtOH 1415 Lanthanum fluoride LaF3 13709-38-1 195.900 wh hex cry; hyg 1493 5.9 i H2O, acid 1416 Lanthanum hydride LaH3 13864-01-2 141.929 blk cub cry 5.36 1417 Lanthanum hydroxide La(OH)3 14507-19-8 189.927 wh amorp solid dec 0.000020

1418 Lanthanum iodate La(IO3)3 13870-19-4 663.614 col cry 1.7 1419 Lanthanum iodide LaI3 13813-22-4 519.619 wh orth cry; hyg 778 5.6 s H2O 1420 Lanthanum nitrate hexahydrate La(NO3)3 ∙ 6H2O 10277-43-7 433.011 wh hyg tricl cry ≈40 dec 20025 vs EtOH; s ace

1422 Lanthanum oxide La2O3 1312-81-8 325.809 wh amorp powder 2304 3620 6.51 i H2O; s dil acid 1423 Lanthanum perchlorate

hexahydrate La(ClO4)3 ∙ 6H2O 36907-37-6 475.021 hyg col cry dec 100 vs H2O; s EtOH

1424 Lanthanum silicide LaSi2 12056-90-5 195.076 gray tetr cry 1520 5.0 1425 Lanthanum sulfate La2(SO4)3 10099-60-2 565.999 hyg wh pow 1150 sl H2O 1426 Lanthanum sulfate octahydrate La2(SO4)3 ∙ 8H2O 57804-25-8 702.058 col cry dec 2.82 sl H2O 1427 Lanthanum sulfate nonahydrate La2(SO4)3 ∙ 9H2O 10294-62-9 728.136 hex cry 2.82 2.720 i EtOH 1428 Lanthanum monosulfide LaS 12031-30-0 170.970 yel cub cry 2300 5.61 1429 Lanthanum sulfide La2S3 12031-49-1 374.006 red cub cry 2110 4.9 1430 Lawrencium Lr 22537-19-5 262 metal 1627 1431 Lead Pb 7439-92-1 207.2 soft silv-gray

metal; cub 327.462 1749 11.3 s conc acid

1432 Plumbane PbH4 15875-18-0 211.2 unstab col gas -13 1433 Lead(II) acetate Pb(C2H3O2)2 301-04-2 325.3 wh cry 280 dec 3.25 44.3

1434 Lead(II) acetate trihydrate Pb(C2H3O2)2 ∙ 3H2O 6080-56-4 379.3 col cry 75 dec 2.55 vs H2O; sl EtOH 1435 Lead(II) acetate, basic Pb(C2H3O2)2 ∙ 2Pb(OH)2 1335-32-6 807.7 wh powder dec 6.30 1436 Lead(II) antimonate Pb3(SbO4)2 13510-89-9 993.1 oran-yel powder 6.58 i H2O, dil acid 1437 Lead(II) arsenate Pb3(AsO4)2 3687-31-8 899.4 wh cry 1042 dec 5.8 i H2O; s HNO3 1438 Lead(II) arsenite Pb(AsO2)2 10031-13-7 421.0 wh powder 5.85 i H2O; s dil HNO3 1439 Lead(II) azide Pb(N3)2 13424-46-9 291.2 col orth needles;

exp exp ≈350 4.7 0.02318 vs HOAc

1440 Lead(II) borate monohydrate Pb(BO2)2 ∙ H2O 10214-39-8 310.8 wh powder 500 dec 5.6 i H2O; s dil HNO3 1441 Lead(II) bromate monohydrate Pb(BrO3)2 ∙ H2O 10031-21-7 481.0 col cry ≈180 dec 5.53 1.3320 1442 Lead(II) bromide PbBr2 10031-22-8 367.0 wh orth cry 371 892 6.69 0.975

25 i EtOH 1443 Lead(II) butanoate Pb(C4H7O2)2 819-73-8 381.4 col solid ≈90 i H2O; s dil HNO3 1444 Lead(II) carbonate PbCO3 598-63-0 267.2 col orth cry ≈315 dec 6.582 i H2O 1445 Lead(II) carbonate, basic Pb(OH)2 ∙ 2PbCO3 1319-46-6 775.6 wh hex cry 400 dec ≈6.5 i H2O, EtOH; s acid 1446 Lead(II) chlorate Pb(ClO3)2 10294-47-0 374.1 col hyg cry 230 dec 3.9 144

18 vs EtOH 1447 Lead(II) chloride PbCl2 7758-95-4 278.1 wh orth needles or

powder 501 951 5.98 1.0825 s alk

1448 Lead(II) chloride fluoride PbClF 13847-57-9 261.7 tetr cry 7.05 0.03520

1449 Lead(II) chlorite Pb(ClO2)2 13453-57-1 342.1 yel monocl cry dec 126 0.2 25 sl H2O; s alk

1450 Lead(II) chromate PbCrO4 7758-97-6 323.2 yel-oran monocl cry

844 6.12 0.00001720 s alk, dil acid

1451 Lead(II) chromate(VI) oxide PbCrO4 ∙ PbO 18454-12-1 546.4 red powder i H2O 1452 Lead(II) citrate trihydrate Pb3(C6H5O7)2 ∙ 3H2O 512-26-5 1053.8 wh cry powder s H2O; sl EtOH 1453 Lead(II) cyanide Pb(CN)2 592-05-2 259.2 wh-yel powder sl H2O; reac acid 1454 Lead(II) 2-ethylhexanoate Pb(C7H15CO2)2 301-08-6 493.6 visc liq 1.56 1455 Lead(II) fluoride PbF2 7783-46-2 245.2 wh orth cry 830 1293 8.44 0.0670

1456 Lead(II) fluoroborate Pb(BF4)2 13814-96-5 380.8 stab only in aq soln

s H2O

1457 Lead(II) formate Pb(CHO2)2 811-54-1 297.2 wh prisms or needles

190 dec 4.63 1.616 i EtOH

1458 Lead(II) hexafluoro-2,4pentanedioate

Pb(CF3COCHCOCF3)2 19648-88-5 621.3 cry 155 210

1459 Lead(II) hydrogen arsenate PbHAsO4 7784-40-9 347.1 wh monocl cry 280 dec 5.943 i H2O; s HNO3, alk 1460 Lead(II) hydrogen phosphate PbHPO4 15845-52-0 303.2 wh monocl cry dec 5.66 1461 Lead(II) hydroxide Pb(OH)2 19783-14-3 241.2 wh powder 145 dec 5.69 0.00012

20 s acid 1462 Lead(II) iodate Pb(IO3)2 25659-31-8 557.0 wh orth cry 6.50 0.0025

1463 Lead(II) iodide PbI2 10101-63-0 461.0 yel hex cry or powder

410 872 dec 6.16 0.07625 i EtOH

1464 Lead(II) lactate Pb(C3H5O3)2 18917-82-3 385.3 wh cry powder s H2O, hot EtOH 1465 Lead(II) molybdate PbMoO4 10190-55-3 367.1 yel tetr cry ≈1060 6.7 i H2O; s HNO3,

NaOH 1466 Lead(II) niobate Pb(NbO3)2 12034-88-7 489.0 rhom or tetr cry 1343 6.6 i H2O 1467 Lead(II) nitrate Pb(NO3)2 10099-74-8 331.2 col cub cry 470 4.53 59.7

25 sl EtOH 1468 Lead(II) oleate Pb(C18H33O2)2 1120-46-3 770.1 wax-like solid i H2O; s EtOH, bz,

eth 1469 Lead(II) oxalate PbC2O4 814-93-7 295.2 wh powder 300 dec 5.28 0.00025

20 s dil HNO3 1470 Lead(II) oxide (litharge) PbO 1317-36-8 223.2 red tetr cry trans to

massicot 489

9.35 i H2O, EtOH; s dil HNO3

1471 Lead(II) oxide (massicot) PbO 1317-36-8 223.2 yel orth cry 887 9.64 i H2O, EtOH; s dil HNO3

1472 Lead(II) oxide hydrate 3PbO ∙ H2O 1311-11-1 687.6 wh powder 7.41 i H2O; s dil acid 1473 Lead(II) 2,4-pentanedioate Pb(CH3COCHCOCH3)2 15282-88-9 405.4 cry 143 1474 Lead(II) perchlorate Pb(ClO4)2 13453-62-8 406.1 wh cry 441

1475 Lead(II) perchlorate trihydrate Pb(ClO4)2 ∙ 3H2O 13637-76-8 460.1 wh cry 100 dec 2.6 44125 s EtOH 1476 Lead(II) phosphate Pb3(PO4)2 7446-27-7 811.5 wh hex cry 1014 7.01 i H2O, EtOH

1477 Lead(II) hypophosphite Pb(H2PO2)2 10294-58-3 337.2 hyg cry powder dec sl H2O; i EtOH 1478 Lead(II) metasilicate PbSiO3 10099-76-0 283.3 wh monocl cry

powder 764 6.49 i H2O, os

1479 Lead(II) orthosilicate Pb2SiO4 13566-17-1 506.5 monocl cry 743 7.60 1480 Lead(II) hexafluorosilicate

dihydrate PbSiF6 ∙ 2H2O 1310-03-8 385.3 col cry dec vs H2O

1481 Lead(II) selenate PbSeO4 7446-15-3 350.2 orth cry 6.37 0.013 25 s conc acid

1482 Lead(II) selenide PbSe 12069-00-0 286.2 gray cub cry 1078 8.1 i H2O; s HNO3 1483 Lead(II) selenite PbSeO3 7488-51-9 334.2 wh monocl cry ≈500 7.0 i H2O 1484 Lead(II) sodium thiosulfate Na4Pb(S2O3)3 10101-94-7 635.5 wh cry sl H2O 1485 Lead(II) stearate Pb(C18H35O2)2 1072-35-1 774.1 wh powder ≈100 1.4 i H2O; s hot EtOH 1486 Lead(II) sulfate PbSO4 7446-14-2 303.3 orth cry 1087 6.29 0.0044

25 i acid; sl alk 1487 Lead(II) sulfide PbS 1314-87-0 239.3 blk powder or silv

cub cry 1113 7.60 i H2O; s acid

1488 Lead(II) sulfite PbSO3 7446-10-8 287.3 wh powder dec i H2O; s HNO3 1489 Lead(II) tantalate Pb(TaO3)2 12065-68-8 665.1 orth cry 7.9 i H2O 1490 Lead(II) telluride PbTe 1314-91-6 334.8 gray cub cry 924 8.164 i H2O, acid 1491 Lead(II) thiocyanate Pb(SCN)2 592-87-0 323.4 wh-yel powder 3.82 0.05

1492 Lead(II) thiosulfate PbS2O3 13478-50-7 319.3 wh cry dec 5.18 i H2O; s acid 1493 Lead(II) titanate PbTiO3 12060-00-3 303.1 yel tetr cry 7.9 i H2O; reac HCl 1494 Lead(II) tungstate (stolzite) PbWO4 7759-01-5 455.0 yel tetr cry 1130 8.24 0.03

20 s alk 1495 Lead(II) tungstate (raspite) PbWO4 7759-01-5 455.0 monocl cry trans 400 8.46 0.03

20 s alk 1496 Lead(II) metavanadate Pb(VO3)2 10099-79-3 405.1 yel powder i H2O; reac HNO3 1497 Lead(II) zirconate PbZrO3 12060-01-4 346.4 col orth cry ≈8 i H2O, alk; s acid 1498 Lead(II,IV) oxide Pb2O3 1314-27-8 462.4 blk monocl cry or

red amorp powder

530 dec 10.05 i H2O; s alk; reac conc HCl

1499 Lead(II,II,IV) oxide Pb3O4 1314-41-6 685.6 red tetr cry 830 8.92 i H2O, EtOH; s hot HCl

1500 Lead(IV) acetate Pb(C2H3O2)4 546-67-8 443.4 col monocl cry ≈175 2.23 reac H2O, EtOH; s bz, chl

1501 Lead(IV) bromide PbBr4 13701-91-2 526.8 unstab liq 1502 Lead(IV) chloride PbCl4 13463-30-4 349.0 yel oily liq -15 ≈50 dec 1503 Lead(IV) fluoride PbF4 7783-59-7 283.2 wh tetr cry; hyg ≈600 6.7 1504 Lead(IV) oxide PbO2 1309-60-0 239.2 red tetr cry or brn

powder 290 dec 9.64

1505 Lithium Li 7439-93-2 6.94 soft silv-wh metal 180.50 1342 0.534 reac H2O 1506 Lithium acetate LiC2H3O2 546-89-4 65.985 cry 286 45.0

25 vs EtOH 1507 Lithium acetate dihydrate LiC2H3O2 ∙ 2H2O 6108-17-4 102.016 wh rhomb cry 58 dec 1.3 45.025 s EtOH 1508 Lithium aluminum hydride LiAlH4 16853-85-3 37.955 gray-wh monocl

cry >125 dec 0.917 reac H2O, EtOH; s

eth, thf 1509 Lithium aluminum silicate LiAlSi2O6 12068-40-5 186.090 wh monocl cry 1430 3.188 1510 Lithium amide LiNH2 7782-89-0 22.964 tetr cry 380 1.18 reac H2O 1511 Lithium arsenate Li3AsO4 13478-14-3 159.743 col orth cry 3.07 sl H2O; s HOAc 1512 Lithium azide LiN3 19597-69-4 48.961 hyg monocl cry;

exp 1.83 vs H2O

1513 Lithium borohydride LiBH4 16949-15-8 21.784 wh-gray orth cry or powder

268 380 dec 0.66 s alk, eth, thf

1514 Lithium bromate LiBrO3 13550-28-2 134.843 hyg col orth cry 260 65.4 25 vs H2O

1515 Lithium bromide LiBr 7550-35-8 86.845 wh cub cry; hyg 550 ≈1300 3.464 18125 s EtOH, eth 1516 Lithium bromide monohydrate LiBr ∙ H2O 23303-71-1 104.860 wh orth cry trans cub 33 3.46 1454 vs H2O 1517 Lithium carbide Li2C2 1070-75-3 37.903 wh hyg cry 1.65 reac H2O; i os 1518 Lithium carbonate Li2CO3 554-13-2 73.891 wh monocl cry 732 1300 dec 2.11 1.30

25 s acid; i EtOH 1519 Lithium chlorate LiClO3 13453-71-9 90.392 col hyg rhom

needles 127.6 300 dec 1.119 45925 vs EtOH; sl ace

1520 Lithium chloride LiCl 7447-41-8 42.394 wh cub cry or powder; hyg

610 1383 2.07 84.525 s EtOH, ace, py

1521 Lithium chloride monohydrate LiCl ∙ H2O 16712-20-2 60.409 hyg wh tetr cry dec 98 1.78 45.925 vs H2O 1522 Lithium chromate dihydrate Li2CrO4 ∙ 2H2O 7789-01-7 165.906 yel orth cry; hyg 75 dec 2.15 vs H2O; s EtOH 1523 Lithium citrate tetrahydrate Li3C6H5O7 ∙ 4H2O 6680-58-6 281.983 wh cry 210 (anh) 7525 vs H2O; sl EtOH 1524 Lithium cobaltite LiCoO2 12190-79-3 97.873 dark gray pow i H2O 1525 Lithium cyanide LiCN 2408-36-8 32.959 wh orth cry 160 1526 Lithium hydride-d LiD 13587-16-1 8.955 hyg wh cry 680 0.82 reac H2O 1527 Lithium dichromate dihydrate Li2Cr2O7 ∙ 2H2O 10022-48-7 265.901 yel-red hyg cry 130 dec 2.34 vs H2O 1528 Lithium dihydrogen phosphate LiH2PO4 13453-80-0 103.928 col hyg cry >100 2.461 126

1529 Lithium diisopropylamide LiN(C3H7)2 4111-54-0 107.123 hyg col cry dec s eth; i hc 1530 Lithium ferrosilicon LiFeSi 64082-35-5 90.872 dark brittle cry reac H2O 1531 Lithium fluoride LiF 7789-24-4 25.939 wh cub cry or

powder 848.2 1673 2.640 0.13425 s acid

1532 Lithium formate monohydrate Li(CHO2) ∙ H2O 6108-23-2 69.974 col-wh cry 1.46 s H2O 1533 Lithium hexafluoroantimonate LiSbF6 18424-17-4 242.691 hyg pow dec 1534 Lithium hexafluoroarsenate LiAsF6 29935-35-1 310.672 rhom wh cry; hyg 1535 Lithium hexafluorophosphate LiPF6 21324-40-3 151.905 wh pow 1536 Lithium hexafluorosilicate Li2SiF6 17347-95-4 155.958 col hex cry dec 350 sl ace 1537 Lithium hexafluorostannate Li2SnF6 17029-16-2 246.582 wh pow 1538 Lithium hydride LiH 7580-67-8 7.949 gray cub cry or

powder; hyg 692 0.78 reac H2O, EtOH

1539 Lithium hydrogen carbonate LiHCO3 5006-97-3 67.958 wh pow sl H2O 1540 Lithium hydroxide LiOH 1310-65-2 23.948 col tetr cry 473 1626 1.45 12.525 sl EtOH 1541 Lithium hydroxide monohydrate LiOH ∙ H2O 1310-66-3 41.964 wh monocl cry or

powder 1.51 12.525 sl EtOH

1542 Lithium hypochlorite LiOCl 13840-33-0 58.393 wh pow vs H2O 1543 Lithium iodate LiIO3 13765-03-2 181.843 wh hyg hex cry 450 4.502 77.9

25 i EtOH 1544 Lithium iodide LiI 10377-51-2 133.845 wh cub cry; hyg 469 1171 4.06 16525

1545 Lithium iodide trihydrate LiI ∙ 3H2O 7790-22-9 187.891 wh hyg cry 73 2.38 16525 vs EtOH, ace 1546 Lithium manganate Li2MnO3 12163-00-7 116.818 red-brn monocl

cry 3.90 i H2O

1547 Lithium metaborate LiBO2 13453-69-5 49.751 wh monocl cry; hyg

844 2.18 2.620 sl H2O; s EtOH

1548 Lithium metaborate dihydrate LiBO2 ∙ 2H2O 15293-74-0 85.782 wh cry pow 1.8 s H2O 1549 Lithium metaphosphate LiPO3 13762-75-9 85.913 wh cry or gl solid 1.8 i H2O 1550 Lithium metasilicate Li2SiO3 10102-24-6 89.966 wh orth needles 1201 2.52 i cold H2O; reac dil

acid 1551 Lithium molybdate Li2MoO4 13568-40-6 173.82 hyg wh cry 702 2.66 44.8

25 s H2O 1552 Lithium niobate LiNbO3 12031-63-9 147.845 wh hex cry 1240 4.30 1553 Lithium nitrate LiNO3 7790-69-4 68.946 col hex cry; hyg 253 2.38 102

25 s EtOH 1554 Lithium nitride Li3N 26134-62-3 34.830 red hex cry 813 1.27 reac H2O 1555 Lithium nitrite LiNO2 13568-33-7 52.947 wh hyg cry 222 vs H2O 1556 Lithium nitrite monohydrate LiNO2 ∙ H2O 13568-33-7* 70.962 col needles >100 1.615 139.525 vs H2O, EtOH 1557 Lithium orthosilicate LiSiO4 13453-84-4 99.025 wh rhom cry 1256 2.39 1558 Lithium oxalate Li2C2O4 30903-87-8 101.901 col cry dec 2.121

17 s H2O; i EtOH, eth 1559 Lithium phosphate Li3PO4 10377-52-3 115.794 wh orth cry 1205 2.46 0.027

1560 Lithium oxide Li2O 12057-24-8 29.881 wh cub cry 1438 2.013 1561 Lithium perchlorate LiClO4 7791-03-9 106.392 wh orth cry or

powder 236 430 dec 2.428 58.725 s EtOH, ace, eth

1562 Lithium perchlorate trihydrate LiClO4 ∙ 3H2O 13453-78-6 160.438 wh hex cry 95 dec 1.84 vs H2O, EtOH, ace; i eth

1563 Lithium peroxide Li2O2 12031-80-0 45.881 wh hex cry 2.31 s H2O; i EtOH 1564 Lithium selenate monohydrate Li2SeO4 ∙ H2O 7790-71-8 174.86 monocl cry 2.56 vs H2O 1565 Lithium selenite monohydrate Li2SeO3 ∙ H2O 15593-51-8 158.86 hyg cry 1566 Lithium stearate LiC18H35O2 4485-12-5 290.411 cry ≈220 1567 Lithium sulfate Li2SO4 10377-48-7 109.945 wh monocl cry;

hyg 860 2.21 34.225

1568 Lithium sulfate monohydrate Li2SO4 ∙ H2O 10102-25-7 127.960 col cry 130 dec 2.06 34.225 sl EtOH 1569 Lithium sulfide Li2S 12136-58-2 45.947 wh cub cry; hyg 1372 1.64 1570 Lithium tantalate LiTaO3 12031-66-2 235.887 wh pow 1650 1571 Lithium tetraborate Li2B4O7 12007-60-2 169.122 wh tetr cry 917 2.9

20 sl H2O 1572 Lithium tetraborate pentahydrate Li2B4O7 ∙ 5H2O 1303-94-2 259.198 wh cry pow dec 200 vs H2O; i EtOH 1573 Lithium tetracyanoplatinate

pentahydrate Li2Pt(CN)4 ∙ 5H2O 14402-73-4 403.112 grn-yel cry sl H2O

1574 Lithium tetrafluoroborate LiBF4 14283-07-9 93.746 hyg wh pow dec vs H2O 1575 Lithium thiocyanate LiSCN 556-65-0 65.024 wh hyg cry 12025

1576 Lithium titanate Li2TiO3 12031-82-2 109.747 wh pow 1325 i H2O 1577 Lithium tungstate Li2WO4 13568-45-1 261.72 wh trig pow 740 3.71 s H2O 1578 Lithium vanadate LiVO3 15060-59-0 105.881 yel pow subl 1400 1579 Lithium zirconate Li2ZrO3 12031-83-3 153.104 wh solid 1580 Lutetium Lu 7439-94-3 174.967 silv metal; hex 1663 3402 9.84 s dil acid 1581 Lutetium boride LuB4 12688-52-7 218.211 tetr cry 2600 ≈7.0 1582 Lutetium bromide LuBr3 14456-53-2 414.679 wh hyg cry 1025 vs H2O 1583 Lutetium chloride LuCl3 10099-66-8 281.326 wh monocl cry;

hyg 925 3.98 s H2O

1584 Lutetium chloride hexahydrate LuCl3 ∙ 6H2O 15230-79-2 389.417 col cry dec 150 s H2O, EtOH 1585 Lutetium fluoride LuF3 13760-81-1 231.962 orth cry 1182 2200 8.3 i H2O 1586 Lutetium iodide LuI3 13813-45-1 555.680 brn hex cry; hyg 1050 ≈5.6 vs H2O 1587 Lutetium iron oxide Lu3Fe5O12 12023-71-1 996.119 cry 1588 Lutetium nitrate Lu(NO3)3 10099-67-9 360.982 hyg col solid s H2O, EtOH 1589 Lutetium nitride LuN 12125-25-6 188.974 cub cry 11.6

1590 Lutetium oxide Lu2O3 12032-20-1 397.932 wh cub cry or powder

2427 3980 9.41

1591 Lutetium perchlorate hexahydrate Lu(ClO4)3 ∙ 6H2O 14646-29-8 581.410 col cry dec 350 (anh) s H2O, MeOH 1592 Lutetium sulfate Lu2(SO4)3 14986-89-1 638.122 wh pow dec >850 vs H2O 1593 Lutetium sulfate octahydrate Lu2(SO4)3 ∙ 8H2O 13473-77-3 782.244 col cry 42.320 s H2O 1594 Lutetium sulfide Lu2S3 12163-20-1 446.129 gray rhomb cry 1750 dec 6.26 1595 Lutetium telluride Lu2Te3 12163-22-3 732.73 orth cry 7.8 1596 Magnesium Mg 7439-95-4 24.305 silv-wh metal 650 1090 1.74 s dil acid 1597 Magnesium acetate Mg(C2H3O2)2 142-72-3 142.394 wh orth/monocl

cry 323 dec 1.50 65.625

1598 Magnesium acetate monohydrate Mg(C2H3O2)2 ∙ H2O 60582-92-5 160.409 orth cry 1.55 1599 Magnesium acetate tetrahydrate Mg(C2H3O2)2 ∙ 4H2O 16674-78-5 214.454 col monocl cry;

hyg 80 dec 1.45 65.625 vs EtOH

1600 Magnesium aluminate Mg(AlO2)2 12068-51-8 142.266 col cub cry 2105 3.55 i H2O 1601 Magnesium aluminum silicate Mg2Al3(AlSi5O18) 1302-88-1 584.953 blue cry 2.6 1602 Magnesium amide Mg(NH2)2 7803-54-5 56.350 wh powder; flam dec 1.39 reac H2O 1603 Magnesium ammonium phosphate

hexahydrate MgNH4PO4 ∙ 6H2O 13478-16-5 245.407 wh pow dec 1.71 i H2O, EtOH; s acid

1604 Magnesium antimonide Mg3Sb2 12057-75-9 316.435 hex cry 1245 3.99 1605 Magnesium arsenide Mg3As2 12044-49-4 222.758 solid ≈1200 3.15 i H2O 1606 Magnesium diboride MgB2 12007-25-9 45.927 hex cry 800 dec 2.57 1607 Magnesium hexaboride MgB6 12008-22-9 89.171 refrac solid 1100 dec i H2O 1608 Magnesium dodecaboride MgB12 12230-32-9 154.037 refrac solid 1300 dec 1609 Magnesium bromate hexahydrate Mg(BrO3)2 ∙ 6H2O 7789-36-8 388.201 col cub cry 200 dec 2.29 9825 1610 Magnesium bromide MgBr2 7789-48-2 184.113 wh hex cry; hyg 711 3.72 102

1611 Magnesium bromide hexahydrate MgBr2 ∙ 6H2O 13446-53-2 292.204 col monocl cry 165 dec 2.0 10225 s EtOH 1612 Magnesium carbonate MgCO3 546-93-0 84.314 wh hex cry 990 3.010 0.18

20 i EtOH; s acid 1613 Magnesium carbonate dihydrate MgCO3 ∙ 2H2O 5145-48-2 120.345 col tricl cry 2.8 i H2O, ace, NH4OH 1614 Magnesium carbonate trihydrate MgCO3 ∙ 3H2O 14457-83-1 138.360 col monocl cry 165 1.8 0.1816 1615 Magnesium carbonate

pentahydrate MgCO3 ∙ 5H2O 61042-72-6 174.390 wh monocl cry dec >400 3.04 0.3816

1616 Magnesium carbonate hydroxide tetrahydrate

4MgCO3 ∙ Mg(OH)2 ∙ 4H2O

39409-82-0 467.636 wh monocl cry 2.3

1617 Magnesium carbonate hydroxide pentahydrate

4MgCO3 ∙ Mg(OH)2 ∙ 5H2O

56378-72-4 485.652 wh pow dec 700 i H2O; s dil acid; i EtOH

1618 Magnesium carbonate dihydroxide trihydrate

MgCO3 ∙ Mg(OH)2 ∙ 3H2O 12143-96-3 196.680 wh monocl cry dec 2.04

1619 Magnesium chlorate hexahydrate Mg(ClO3)2 ∙ 6H2O 13446-19-0 299.299 wh hyg cry ≈35 dec 1.80 14225 sl EtOH 1620 Magnesium chloride MgCl2 7786-30-3 95.211 wh hex leaflets;

hyg 714 1412 2.325 56.025

1621 Magnesium chloride hexahydrate MgCl2 ∙ 6H2O 7791-18-6 203.302 wh hyg cry ≈100 dec 1.56 56.025 s EtOH 1622 Magnesium chromate heptahydrate MgCrO4 ∙ 7H2O 13423-61-5* 266.405 yel rhom cry 1.695 54.825 1623 Magnesium chromite MgCr2O4 12053-26-8 192.295 deep grn cry 2390 4.4 1624 Magnesium citrate Mg3(C6H5O7)2 3344-18-1 451.114 wh cry sl H2O 1625 Magnesium citrate tetradecahydrate Mg3(C6H5O7)2 ∙ 14H2O 3344-18-1* 703.328 wh cry pow sl H2O; s acid 1626 Magnesium fluoride MgF2 7783-40-6 62.302 wh tetr cry 1263 2227 3.148 0.013

1627 Magnesium formate dihydrate Mg(CHO2)2 ∙ 2H2O 6150-82-9 150.370 wh cry dec s H2O; i EtOH 1628 Magnesium germanate Mg2GeO4 12025-13-7 185.25 wh prec i H2O 1629 Magnesium germanide Mg2Ge 1310-52-7 121.25 cub cry 1117 3.09 1630 Magnesium hydride MgH2 7693-27-8 26.321 wh tetr cry 327 1.45 reac H2O 1631 Magnesium hydrogen phosphate

trihydrate MgHPO4 ∙ 3H2O 7757-86-0 174.331 wh powder 550 dec 2.13 sl H2O; s dil acid

1632 Magnesium hydroxide Mg(OH)2 1309-42-8 58.320 wh hex cry 350 2.37 0.00069 20 s dil acid

1633 Magnesium iodate tetrahydrate Mg(IO3)2 ∙ 4H2O 7790-32-1* 446.172 col monocl cry 210 dec 3.3 11.125 1634 Magnesium iodide MgI2 10377-58-9 278.114 wh hex cry; hyg 634 4.43 146

1635 Magnesium iodide hexahydrate MgI2 ∙ 6H2O 66778-21-0 386.205 wh monocl cry 2.35 1636 Magnesium iodide octahydrate MgI2 ∙ 8H2O 7790-31-0 422.236 wh orth cry; hyg 41 dec 2.10 14625 s EtOH 1637 Magnesium metaborate

octahydrate Mg(BO2)2 ∙ 8H2O 13703-82-7* 254.047 wh pow 988 (anh) sl H2O

1638 Magnesium metasilicate MgSiO3 13776-74-4 100.389 wh monocl cry ≈1550 dec 3.19 i H2O; sl HF 1639 Magnesium metatitanate MgTiO3 12032-30-3 120.170 col hex cry 1565 3.85 1640 Magnesium molybdate MgMoO4 12013-21-7 184.24 wh pow ≈1060 2.2 15.9

25 s H2O 1641 Magnesium nitrate Mg(NO3)2 10377-60-3 148.314 wh cub cry ≈2.3 71.2

1642 Magnesium nitrate dihydrate Mg(NO3)2 ∙ 2H2O 15750-45-5 184.345 wh cry ≈100 dec 1.45 71.225 s EtOH 1643 Magnesium nitrate hexahydrate Mg(NO3)2 ∙ 6H2O 13446-18-9 256.406 col monocl cry;

hyg ≈95 dec 1.46 71.225 s EtOH

1644 Magnesium nitride Mg3N2 12057-71-5 100.928 yel cub cry ≈1500 dec 2.71 1645 Magnesium nitrite trihydrate Mg(NO2)2 ∙ 3H2O 15070-34-5 170.362 wh hyg prisms 100 dec 129.925 s EtOH

1647 Magnesium orthotitanate Mg2TiO4 12032-52-9 160.475 wh cub cry 1840 3.53 1648 Magnesium oxalate MgC2O4 547-66-0 112.324 wh powder 0.038

1649 Magnesium oxalate dihydrate MgC2O4 ∙ 2H2O 6150-88-5 148.354 wh powder 0.03825 i EtOH; s dil acid 1650 Magnesium oxide MgO 1309-48-4 40.304 wh cub cry 2825 3600 3.6 sl H2O; i EtOH 1651 Magnesium perborate heptahydrate Mg(BO3)2 ∙ 7H2O 14635-87-1 268.030 wh pow sl H2O 1652 Magnesium perchlorate Mg(ClO4)2 10034-81-8 223.206 wh hyg powder 250 dec 2.2 100

1653 Magnesium perchlorate hexahydrate

Mg(ClO4)2 ∙ 6H2O 13446-19-0 331.298 wh hyg cry 190 dec 1.98 10025 s EtOH

1654 Magnesium permanganate hexahydrate

Mg(MnO4)2 ∙ 6H2O 10377-62-5 370.268 blue-blk cry dec 2.18 s H2O

1655 Magnesium peroxide MgO2 1335-26-8 56.304 wh cub cry 100 dec ≈3.0 i H2O; s dil acid 1656 Magnesium phosphate

pentahydrate Mg3(PO4)2 ∙ 5H2O 7757-87-1* 352.934 wh cry 400 dec 0.0000920 s dil acid

1657 Magnesium phosphate octahydrate Mg3(PO4)2 ∙ 8H2O 13446-23-6 406.980 wh monocl cry 2.17 0.0000920 s acid 1658 Magnesium pyrophosphate Mg2P2O7 13446-24-7 222.553 col monocl plates 1395 2.56 1659 Magnesium pyrophosphate

trihydrate Mg2P2O7 ∙ 3H2O 10102-34-8 276.600 wh powder 100 dec 2.56 i H2O; s acid

1660 Magnesium phosphide Mg3P2 12057-74-8 134.863 yel cub cry 2.06 reac H2O 1661 Magnesium selenate hexahydrate MgSeO4 ∙ 6H2O 13446-28-1 275.35 wh monocl cry 1.928 55.525 1662 Magnesium selenide MgSe 1313-04-8 103.27 brn cub cry 4.2 reac H2O 1663 Magnesium selenite hexahydrate MgSeO3 ∙ 6H2O 15593-61-0 259.36 col hex cry 2.09 i H2O; s dil acid 1664 Magnesium hexafluorosilicate

hexahydrate MgSiF6 ∙ 6H2O 60950-56-3 274.472 wh cry 120 dec 1.79 39.318 i EtOH

1665 Magnesium silicide Mg2Si 22831-39-6 76.696 gray cub cry 1102 1.99 reac H2O 1666 Magnesium stannide Mg2Sn 1313-08-2 167.320 blue cub cry 771 3.60 s H2O, dil HCl 1667 Magnesium sulfate MgSO4 7487-88-9 120.368 col orth cry 1137 2.66 35.7

1668 Magnesium sulfate monohydrate MgSO4 ∙ H2O 14168-73-1 138.383 col monocl cry 150 dec 2.57 35.725 1669 Magnesium sulfate heptahydrate MgSO4 ∙ 7H2O 10034-99-8 246.474 col orth cry 150 dec 1.67 35.725 sl EtOH 1670 Magnesium sulfide MgS 12032-36-9 56.370 red-brn cub cry 2226 2.68 reac H2O 1671 Magnesium sulfite trihydrate MgSO3 ∙ 3H2O 19086-20-5 158.414 col orth cry 2.12 0.7925 1672 Magnesium sulfite hexahydrate MgSO3 ∙ 6H2O 13446-29-2 212.460 wh hex cry 200 dec 1.72 0.7925 i EtOH 1673 Magnesium tetrahydrogen

phosphate dihydrate Mg(H2PO4)2 ∙ 2H2O 15609-80-0 254.311 wh hyg cry dec 90 s H2O; i EtOH

1674 Magnesium thiocyanate tetrahydrate

Mg(SCN)2 ∙ 4H2O 306-61-6 212.531 wh hyg cry vs H2O, EtOH

1675 Magnesium thiosulfate hexahydrate MgS2O3 ∙ 6H2O 13446-30-5 244.525 col cry 170 dec 1.82 9325 i EtOH 1676 Magnesium trisilicate Mg2Si3O8 14987-04-3 260.862 wh powder i H2O, EtOH 1677 Magnesium tungstate MgWO4 13573-11-0 272.14 wh monocl cry 6.89 0.016

20 i EtOH 1678 Magnesium vanadate Mg2V2O7 13568-63-3 262.489 tricl cry 3.1 1679 Magnesium zirconate MgZrO3 12032-31-4 163.527 col cry 2060 4.23 1680 Magnesium zirconium silicate MgO ∙ ZrO2 ∙ SiO2 52110-05-1 223.612 wh solid i H2O, alk; sl acid 1681 Manganese Mn 7439-96-5 54.938 hard gray metal 1246 2061 7.3 s dil acids 1682 Manganocene Mn(C5H5)2 1271-27-8 185.124 yel-brn cry 173 s py, thf; sl bz 1683 Manganese antimonide (MnSb) MnSb 12032-82-5 176.698 hex cry 840 6.9 1684 Manganese antimonide (Mn2Sb) Mn2Sb 12032-97-2 231.636 tetr cry 948 7.0 1685 Manganese boride (MnB) MnB 12045-15-7 65.749 orth cry 1890 6.45 1686 Manganese boride (MnB2) MnB2 12228-50-1 76.560 hex cry 1827 5.3 1687 Manganese boride (Mn2B) Mn2B 12045-16-8 120.687 red-brn tetr cry 1580 7.20 1688 Manganese carbide Mn3C 12266-65-8 176.825 refrac solid 1520 6.89 1689 Manganese carbonyl Mn2(CO)10 10170-69-1 389.977 yel monocl cry 154 1.75 i H2O; s os 1690 Manganese pentacarbonyl bromide Mn(CO)5Br 14516-54-2 274.893 oran-yel cry s os 1691 Manganese phosphide (MnP) MnP 12032-78-9 85.912 orth cry 1147 5.49 1692 Manganese phosphide (Mn2P) Mn2P 12333-54-9 140.850 hex cry 1327 6.0 1693 Manganese silicide MnSi2 12032-86-9 111.109 gray solid 1152 dec 1694 Manganese(II) acetate tetrahydrate Mn(C2H3O2)2 ∙ 4H2O 6156-78-1 245.087 red monocl cry 80 1.59 s H2O, EtOH 1695 Manganese(II) bromide MnBr2 13446-03-2 214.746 pink hex cry 698 4.385 151

1696 Manganese(II) bromide tetrahydrate

MnBr2 ∙ 4H2O 10031-20-6 286.808 red hyg cry 64 dec 15125

1697 Manganese(II) carbonate MnCO3 598-62-9 114.947 pink hex cry >200 dec 3.70 0.00008 20 s dil acid

1698 Manganese(II) chloride MnCl2 7773-01-5 125.844 pink trig cry; hyg 650 1190 2.977 77.3 25 s py, EtOH; i eth

1699 Manganese(II) chloride tetrahydrate MnCl2 ∙ 4H2O 13446-34-9 197.906 red monocl cry; hyg

87.5 1.913 77.325 s EtOH; i eth

1700 Manganese(II) dihydrogen phosphate dihydrate

Mn(H2PO4)2 ∙ 2H2O 18718-07-5 284.944 col hyg cry s H2O; i EtOH

1701 Manganese(II) fluoride MnF2 7782-64-1 92.935 red tetr cry 900 3.98 1.02 25 i EtOH

1702 Manganese(II) hydroxide Mn(OH)2 18933-05-6 88.953 pink hex cry dec 3.26 0.00034 20

1703 Manganese(II) hypophosphite monohydrate

Mn(H2PO2)2 ∙ H2O 10043-84-2 202.931 pink cry >250 1520 s H2O

1705 Manganese(II) iodide tetrahydrate MnI2 ∙ 4H2O 7790-33-2* 380.809 red cry vs H2O; s EtOH 1706 Manganese(II) metasilicate MnSiO3 7759-00-4 131.022 red orth cry 1291 3.48 i H2O 1707 Manganese(II) molybdate MnMoO4 14013-15-1 214.88 yel monocl cry 4.05 1708 Manganese(II) nitrate Mn(NO3)2 10377-93-2 178.947 col orth cry; hyg 2.2 161

25 s diox, thf 1709 Manganese(II) nitrate tetrahydrate Mn(NO3)2 ∙ 4H2O 20694-39-7 251.009 pink hyg cry 37.1 dec 2.13 16125 s EtOH 1710 Manganese(II) nitrate hexahydrate Mn(NO3)2 ∙ 6H2O 10377-66-9 287.039 rose monocl cry 28 dec 1.8 16125 vs EtOH 1711 Manganese(II) orthosilicate Mn2SiO4 13568-32-6 201.960 orth cry 4.11 i H2O 1712 Manganese(II) oxalate dihydrate MnC2O4 ∙ 2H2O 6556-16-7 178.987 wh cry powder 150 dec 2.45 0.03220 s acid 1713 Manganese(II) oxide MnO 1344-43-0 70.937 grn cub cry or

powder 1842 5.37 i H2O; s acid

1714 Manganese(II) perchlorate hexahydrate

Mn(ClO4)2 ∙ 6H2O 15364-94-0 361.931 pink hex cry 2.10

1715 Manganese(II) pyrophosphate Mn2P2O7 53731-35-4 283.819 wh monocl cry 1196 3.71 i H2O 1716 Manganese(II) selenide MnSe 1313-22-0 133.90 gray cub cry 1460 5.45 i H2O 1717 Manganese(II) sulfate MnSO4 7785-87-7 151.001 wh orth cry 700 850 dec 3.25 63.7

1718 Manganese(II) sulfate monohydrate MnSO4 ∙ H2O 10034-96-5 169.016 red monocl cry 2.95 63.725 i EtOH 1719 Manganese(II) sulfate tetrahydrate MnSO4 ∙ 4H2O 10101-68-5 223.062 red monocl cry 38 dec 2.26 63.725 i EtOH 1720 Manganese(II) sulfide (α form) MnS 18820-29-6 87.003 grn cub cry 1610 4.0 i H2O; s dil acid 1721 Manganese(II) sulfide (β form) MnS 18820-29-6 87.003 red cub cry 3.3 i H2O; s dil acid 1722 Manganese(II) sulfide (γ form) MnS 18820-29-6 87.003 red hex cry ≈3.3 i H2O; s dil acid 1723 Manganese(II) telluride MnTe 12032-88-1 182.54 hex cry ≈1150 6.0 1724 Manganese(II) tetraborate

octahydrate MnB4O7 ∙ 8H2O 12228-91-0 354.300 red solid i H2O, EtOH; s dil

acid 1725 Manganese(II) titanate MnTiO3 12032-74-5 150.803 red hex cry 1360 4.55 1726 Manganese(II) tungstate MnWO4 13918-22-4 302.78 wh monocl cry 7.2 0.0054

1727 Manganese(II,III) oxide Mn3O4 1317-35-7 228.812 brn tetr cry 1567 4.84 i H2O; s HCl 1728 Manganese(III) acetate dihydrate Mn(C2H3O2)3 ∙ 2H2O 19513-05-4 268.100 brn cry s eth, HOAc 1729 Manganese(III) fluoride MnF3 7783-53-1 111.933 red monocl cry;

hyg >600 dec 3.54 reac H2O

1730 Manganese(III) hydroxide MnO(OH) 1332-63-4 87.945 blk monocl cry 250 dec ≈4.3 i H2O 1731 Manganese(III) oxide Mn2O3 1317-34-6 157.874 blk cub cry 1080 dec ≈5.0 i H2O 1732 Manganese(IV) oxide MnO2 1313-13-9 86.937 blk tetr cry 535 dec 5.08 i H2O, HNO3 1733 Manganese(VII) oxide Mn2O7 12057-92-0 221.872 grn oil; exp 5.9 95 exp 2.40 vs H2O 1734 Mendelevium Md 7440-11-1 258 metal 827 1735 Mercury Hg 7439-97-6 200.59 heavy silv liq -38.829 356.619 13.5336 i H2O 1736 Dimethyl mercury Hg(CH3)2 593-74-8 230.66 liq 93 3.17 i H2O; vs EtOH, eth 1737 Mercury(I) acetate Hg2(C2H3O2)2 631-60-7 519.27 col scales dec sl H2O; i EtOH, eth 1738 Mercury(I) bromate Hg2(BrO3)2 13465-33-3 656.98 col cry dec i H2O; sl acid 1739 Mercury(I) bromide Hg2Br2 15385-58-7 560.99 wh tetr cry or

powder 345 dec 7.307 i H2O, EtOH, eth

1740 Mercury(I) carbonate Hg2CO3 6824-78-8 461.19 yel-brn cry 130 dec 0.0000045 i EtOH 1741 Mercury(I) chlorate Hg2(ClO3)2 10294-44-7 568.08 wh rhom cry ≈250 dec 6.409 sl H2O; s EtOH 1742 Mercury(I) chloride Hg2Cl2 10112-91-1 472.09 wh tetr cry 525 tp 383 sp 7.16 0.0004

25 i EtOH, eth 1743 Mercury(I) chromate Hg2CrO4 13465-34-4 517.17 brn-red solid i H2O EtOH; s conc

HNO3 1744 Mercury(I) fluoride Hg2F2 13967-25-4 439.18 yel cub cry 570 dec subl 8.73 reac H2O 1745 Mercury(I) iodate Hg2(IO3)2 13465-35-5 750.99 yel-wh pow dec 175 0.0032

1746 Mercury(I) iodide Hg2I2 15385-57-6 654.99 yel amorp powder 290 7.70 i H2O, EtOH, eth 1747 Mercury(I) nitrate Hg2(NO3)2 10415-75-5 525.19 cry sl H2O 1748 Mercury(I) nitrate dihydrate Hg2(NO3)2 ∙ 2H2O 14836-60-3 561.22 col cry 70 dec 4.8 sl H2O 1749 Mercury(I) nitrite Hg2(NO2)2 13492-25-6 493.19 yel cry 100 dec 7.3 reac H2O 1750 Mercury(I) oxalate Hg2C2O4 2949-11-3 489.20 cry i H2O; sl HNO3 1751 Mercury(I) oxide Hg2O 15829-53-5 417.18 prob mixture of

HgO+Hg 100 dec 9.8 i H2O; s HNO3

1752 Mercury(I) perchlorate tetrahydrate Hg2(ClO4)2 ∙ 4H2O 65202-12-2 672.14 cry 64 44225 1753 Mercury(I) sulfate Hg2SO4 7783-36-0 497.24 wh-yel cry powder 7.56 0.051

25 s dil HNO3 1754 Mercury(I) sulfide Hg2S 51595-71-2 433.25 unstab blk pow dec i H2O 1755 Mercury(I) thiocyanate Hg2(SCN)2 13465-37-7 517.34 col powder dec 0.03

25 s HCl, KCNS 1756 Mercury(I) tungstate Hg2WO4 38705-19-0 649.02 yel amorp solid dec i H2O, EtOH 1757 Mercury(II) acetate Hg(C2H3O2)2 1600-27-7 318.68 wh-yel cry or

powder 179 dec 3.28 2510 s EtOH

1758 Mercury(II) amide chloride Hg(NH2)Cl 10124-48-8 252.07 wh solid subl 5.38 i H2O, EtOH; s warm acid

1759 Mercury(II) benzoate monohydrate Hg(C7H5O2)2 ∙ H2O 32839-04-6 460.83 wh cry 165 1.215 sl EtOH 1760 Mercury(II) bromate Hg(BrO3)2 26522-91-8 456.39 cry 130 dec 0.15 s acid 1761 Mercury(II) bromide HgBr2 7789-47-1 360.40 wh rhomb cry or

powder 241 318 6.05 0.6125 sl chl; s EtOH,

MeOH 1762 Mercury(II) chlorate Hg(ClO3)2 13465-30-0 367.49 wh needles dec 4.998 25

1763 Mercury(II) chloride HgCl2 7487-94-7 271.50 wh orth cry 277 304 5.6 7.31 25 sl bz; s EtOH,

MeOH, ace, eth 1764 Mercury(II) chromate HgCrO4 13444-75-2 316.58 red monocl cry 6.06 sl H2O 1765 Mercury(II) cyanide Hg(CN)2 592-04-1 252.62 col tetr cry 320 dec 4.00 11.4

25 s EtOH; sl eth 1766 Mercury(II) dichromate HgCr2O7 7789-10-8 416.58 red cry powder i H2O; s acid 1767 Mercury(II) fluoride HgF2 7783-39-3 238.59 wh cub cry; hyg 645 dec 8.95 reac H2O 1768 Mercury(II) fulminate Hg(CNO)2 628-86-4 284.62 gray cry exp 4.42 sl H2O; s EtOH,

NH4OH 1769 Mercury(II) hydrogen arsenate HgHAsO4 7784-37-4 340.52 yel powder i H2O; s acid 1770 Mercury(II) iodate Hg(IO3)2 7783-32-6 550.40 wh powder 175 dec i H2O 1771 Mercury(II) iodide (yellow) HgI2 7774-29-0 454.40 yel tetr cry or

powder 256 351 6.28 0.005525 sl EtOH, ace, eth

1772 Mercury(II) iodide (red) HgI2 7774-29-0 454.40 red pow trans to yel 127

0.00625 sl EtOH, ace, eth, chl

1773 Mercury(II) nitrate Hg(NO3)2 10045-94-0 324.60 col hyg cry 79 4.3 s H2O; i EtOH 1774 Mercury(II) nitrate monohydrate Hg(NO3)2 ∙ H2O 7783-34-8 342.62 wh-yel hyg cry 4.3 s H2O, dil acid 1775 Mercury(II) nitrate dihydrate Hg(NO3)2 ∙ 2H2O 22852-67-1 360.63 monocl cry 4.78 s H2O 1776 Mercury(II) oxalate HgC2O4 3444-13-1 288.61 powder 165 dec i H2O 1777 Mercury(II) oxide HgO 21908-53-2 216.59 red or yel orth cry 500 dec 11.14 i H2O, EtOH; s dil

acid 1778 Mercury(II) oxide sulfate (Hg3O2)SO4 1312-03-4 729.83 yel powder i H2O; s acid 1779 Mercury(II) oxycyanide Hg(CN)2 ∙ HgO 1335-31-5 469.21 wh orth cry exp 4.44 11.425 1780 Mercury(II) perchlorate trihydrate Hg(ClO4)2 ∙ 3H2O 7616-83-3 453.54 cry 1781 Mercury(II) phosphate Hg3(PO4)2 7782-66-3 791.71 wh-yel powder i H2O, EtOH; s acid 1782 Mercury(II) selenide HgSe 20601-83-6 279.55 gray cub cry subl 8.21 i H2O 1783 Mercury(II) sulfate HgSO4 7783-35-9 296.65 wh monocl cry 6.47 reac H2O 1784 Mercury(II) sulfide (black) HgS 1344-48-5 232.66 blk cub cry or

powder 850 7.70 i H2O; s acid, EtOH

1785 Mercury(II) sulfide (red) HgS 1344-48-5 232.66 red hex cry trans to blk HgS 344

8.17 i H2O, acid; s aqua regia

1786 Mercury(II) telluride HgTe 12068-90-5 328.19 gray cub cry 673 8.63 1787 Mercury(II) thiocyanate Hg(SCN)2 592-85-8 316.75 monocl cry ≈165 dec 3.71 0.070

25 s dil HCl 1788 Mercury(II) tungstate HgWO4 37913-38-5 448.43 yel cry dec i H2O, EtOH 1789 Molybdenum Mo 7439-98-7 95.96 gray-blk metal;

cub 2622 4639 10.2 i H2O, dil acid, alk

1790 Molybdophosphoric acid H3P(Mo3O10)4 51429-74-4 1825.25 bright yel cry 1791 Molybdenum boride (Mo2B) Mo2B 12006-99-4 202.69 refrac tetr cry 2000 9.2 1792 Molybdenum boride (Mo2B5) Mo2B5 12007-97-5 245.94 refrac hex cry 1600 ≈7.2 1793 Molybdenum carbide (MoC) MoC 12011-97-1 107.95 refrac solid; cub 2577 1794 Molybdenum carbide (Mo2C) Mo2C 12069-89-5 203.89 gray orth cry 2687 9.18 1795 Molybdenum carbonyl Mo(CO)6 13939-06-5 264.00 wh orth cry 148 155 dec 1.96 i H2O; s bz; sl eth 1796 Molybdenum nitride (MoN) MoN 12033-19-1 109.95 hex cry 1750 9.20 1797 Molybdenum nitride (Mo2N) Mo2N 12033-31-7 205.89 gray cub cry 790 dec 9.46 1798 Molybdenum phosphide MoP 12163-69-8 126.91 blk hex cry 7.34 1799 Molybdenum silicide (MoSi2) MoSi2 12136-78-6 152.11 gray tetr cry ≈1900 6.2 i H2O; s HF 1800 Molybdenum(II) bromide MoBr2 13446-56-5 255.75 yel-red cry dec 700 4.88 i H2O, EtOH 1801 Molybdenum(II) chloride MoCl2 13478-17-6 166.85 yel cry dec 500 3.71 i H2O 1802 Molybdenum(II) iodide MoI2 14055-74-4 349.75 blk hyg cry 700 5.28 i H2O 1803 Molybdenum(III) bromide MoBr3 13446-57-6 335.65 grn hex cry dec 500 4.89 i H2O, EtOH 1804 Molybdenum(III) chloride MoCl3 13478-18-7 202.30 dark red monocl

cry dec 400 3.74 i H2O, os

1805 Molybdenum(III) fluoride MoF3 20193-58-2 152.94 yel-brn hex cry >600 4.64 i H2O 1806 Molybdenum(III) iodide MoI3 14055-75-5 476.65 blk solid 927 i H2O 1807 Molybdenum(III) oxide Mo2O3 1313-29-7 239.88 gray-blk powder i H2O; sl acid 1808 Molybdenum(IV) bromide MoBr4 13520-59-7 415.56 blk cry dec 110 reac H2O 1809 Molybdenum(IV) chloride MoCl4 13320-71-3 237.75 blk cry 317 reac H2O, sl chl; i

eth, bz 1810 Molybdenum(IV) fluoride MoF4 23412-45-5 171.93 grn cry dec reac H2O 1811 Molybdenum(IV) iodide MoI4 14055-76-6 603.56 blk cry dec 100 i H2O 1812 Molybdenum(IV) oxide MoO2 18868-43-4 127.94 brn-viol tetr cry ≈1800 dec 6.47 i H2O, acid, alk 1813 Molybdenum(IV) selenide MoSe2 12058-18-3 253.86 gray hex cry >1200 6.90 1814 Molybdenum(IV) sulfide MoS2 1317-33-5 160.07 blk powder or hex

cry 1750 5.06 i H2O; s conc acid

1815 Molybdenum(IV) telluride MoTe2 12058-20-7 351.14 gray hex cry 7.7 1816 Molybdenum(V) chloride MoCl5 10241-05-1 273.21 grn-blk monocl

cry; hyg 194 268 2.93 reac H2O; s EtOH,

eth 1817 Molybdenum(V) fluoride MoF5 13819-84-6 190.93 yel monocl cry 67 213.6 3.5 reac H2O 1818 Molybdenum(V) oxytrichloride MoOCl3 13814-74-9 218.30 blk monocl cry 310 subl reac H2O 1819 Molybdenum(VI) acid monohydrate HMoO ∙ HO 7782-91-4 179.97 wh powder 3.1 sl HO; s alk

1820 Molybdenum(VI) dioxydichloride MoO2Cl2 13637-68-8 198.85 yel-oran solid 176 250 3.31 reac H2O 1821 Molybdenum(VI) dioxydifluoride MoO2F2 13824-57-2 165.94 pale lilac cry subl 270 3.5 i MeCN, chl; sl HF 1822 Molybdenum(VI) fluoride MoF6 7783-77-9 209.93 wh cub cry or col

liq; hyg 17.5 34.0 2.54 reac H2O; vs hex,

ctc 1823 Molybdenum(VI) metaphosphate Mo(PO3)6 133863-98-6 569.77 yel powder 3.28 i H2O, acid 1824 Molybdenum(VI) oxide MoO3 1313-27-5 143.94 wh-yel rhomb cry 802 1155 4.70 0.14

20 sl H2O; s alk, acid 1825 Molybdenum(VI) oxytetrachloride MoOCl4 13814-75-0 253.75 grn hyg powder 105 159 1826 Molybdenum(VI) oxytetrafluoride MoOF4 14459-59-7 187.93 volatile solid 97.2 186.0 1827 Molybdenum(VI) sulfide MoS3 12033-29-3 192.14 blk solid 350 dec i H2O, os 1828 Neodymium Nd 7440-00-8 144.242 silv metal; hex 1016 3074 7.01 1829 Neodymium boride NdB6 12008-23-0 209.108 blk cub cry 2610 4.93 1830 Neodymium nitride NdN 25764-11-8 158.249 blk cub cry 7.69 1831 Neodymium(II) acetate Nd(C2H3O2)2 6192-13-8 321.373 red-purp cry s H2O 1832 Neodymium(II) chloride NdCl2 25469-93-6 215.148 grn hyg solid 841 1833 Neodymium(III) bromate

nonahydrate Nd(BrO3)3 ∙ 9H2O 15162-92-2 690.086 red hex cry 66 dec

1834 Neodymium(III) bromide NdBr3 13536-80-6 383.954 viol orth cry; hyg 682 1540 5.3 s H2O 1835 Neodymium(III) chloride NdCl3 10024-93-8 250.601 viol hex cry 759 1600 4.13 100

25 vs EtOH; i eth, chl 1836 Neodymium(III) chloride

hexahydrate NdCl3 ∙ 6H2O 13477-89-9 358.692 purp cry 124 dec 2.3 10025 s EtOH

1837 Neodymium(III) fluoride NdF3 13709-42-7 201.237 viol hex cry; hyg 1377 2300 6.51 i H2O 1838 Neodymium(III) hydroxide Nd(OH)3 16469-17-3 195.264 blue solid dec 210 i H2O 1839 Neodymium(III) iodide NdI3 13813-24-6 524.955 grn orth cry; hyg 787 5.85 s H2O 1840 Neodymium(III) nitrate Nd(NO3)3 10045-95-1 330.257 viol hyg. cry 152

25 s EtOH 1841 Neodymium(III) nitrate hexahydrate Nd(NO3)3 ∙ 6H2O 14517-29-4 438.348 purp hyg cry 15225 s EtOH, ace 1842 Neodymium(III) oxide Nd2O3 1313-97-9 336.482 blue hex cry; hyg 2233 3760 7.24 i H2O; s dil acid 1843 Neodymium(III) sulfate Nd2(SO4)3 13477-91-3 576.672 pink needles ≈700 dec 7.1

1844 Neodymium(III) sulfate octahydrate Nd2(SO4)3 ∙ 8H2O 13477-91-3 720.794 red cry 350 dec 2.85 sl H2O 1845 Neodymium(III) sulfide Nd2S3 12035-32-4 384.679 orth cry 2207 5.46 1846 Neodymium(III) telluride Nd2Te3 12035-35-7 671.28 gray orth cry 1377 7.0 1847 Neodymium(III)

tris(cyclopentadienyl) Nd(C5H5)3 1273-98-9 339.522 red-blue cry 380 s thf

1848 Neon Ne 7440-01-9 20.180 col gas -248.59 -246.053 0.825 g/L sl H2O 1849 Neptunium Np 7439-99-8 237 silv metal 644 3902 20.2 s HCl 1850 Neptunium(IV) oxide NpO2 12035-79-9 269 grn cub cry 2547 11.1 1851 Nickel Ni 7440-02-0 58.693 wh metal; cub 1455 2913 8.90 i H2O; sl dil acid 1852 Nickelocene Ni(C5H5)2 1271-28-9 188.879 grn cry 173 1853 Nickel aluminide (NiAl) NiAl 12003-78-0 85.675 metallic solid 1638 1854 Nickel antimonide NiSb 12035-52-8 180.453 hex cry 1147 8.74 1855 Nickel arsenide NiAs 27016-75-7 133.615 hex cry 967 7.77 1856 Nickel boride (NiB) NiB 12007-00-0 69.504 grn refrac solid 1035 7.13 1857 Nickel boride (Ni2B) Ni2B 12007-01-1 128.198 refrac solid 1125 7.90 1858 Nickel boride (Ni3B) Ni3B 12007-02-2 186.891 refrac solid 1166 8.17 1859 Nickel carbonyl Ni(CO)4 13463-39-3 170.734 col liq -19.3 42.1 (exp

≈60) 1.31 i H2O; s EtOH, bz,

ace, ctc 1860 Nickel phosphide Ni2P 12035-64-2 148.361 hex cry 1100 7.33 1861 Nickel silicide (NiSi2) NiSi2 12201-89-7 114.864 cub cry 993 4.83 1862 Nickel silicide (Ni2Si) Ni2Si 12059-14-2 145.473 orth cry 1255 7.40 1863 Nickel subsulfide Ni3S2 12035-72-2 240.210 yel hex cry 789 5.87 1864 Nickel(II) acetate tetrahydrate Ni(C2H3O2)2 ∙ 4H2O 6018-89-9 248.842 grn monocl cry 250 dec 1.74 1620 s H2O, EtOH 1865 Nickel(II) ammonium chloride

hexahydrate NH4NiCl3 ∙ 6H2O 16122-03-5* 291.182 grn hyg cry 1.65 s H2O

1866 Nickel(II) ammonium sulfate Ni(NH4)2(SO4)2 15699-18-0 286.895 blue-grn cry dec 250 sl H2O 1867 Nickel(II) ammonium sulfate

hexahydrate Ni(NH4)2(SO4)2 ∙ 6H2O 7785-20-8 394.987 blue-grn cry dec 130 1.92 6.520 s H2O; i EtOH

1868 Nickel(II) arsenate octahydrate Ni3(AsO4)2 ∙ 8H2O 7784-48-7 598.040 yel-grn powder dec 4.98 i H2O; s acid 1869 Nickel(II) bromide NiBr2 13462-88-9 218.501 yel hex cry; hyg 963 subl 5.10 131

1870 Nickel(II) bromide trihydrate NiBr2 ∙ 3H2O 13462-88-9* 272.547 yel-grn hyg cry 200 dec vs H2O; s EtOH, eth 1871 Nickel(II) carbonate NiCO3 3333-67-3 118.702 grn rhomb cry 4.389 0.0043

20 s dil acid 1872 Nickel(II) chlorate hexahydrate Ni(ClO3)2 ∙ 6H2O 13477-94-6 333.687 grn cub cry dec 80 2.07 vs H2O 1873 Nickel(II) chloride NiCl2 7718-54-9 129.599 yel hex cry; hyg 1031 985 sp 3.51 67.5

25 s EtOH 1874 Nickel(II) chloride hexahydrate NiCl2 ∙ 6H2O 7791-20-0 237.690 grn monocl cry 67.525 s EtOH 1875 Nickel(II) chromate NiCrO4 14721-18-7 174.687 red solid sl H2O 1876 Nickel(II) cyanide tetrahydrate Ni(CN)2 ∙ 4H2O 13477-95-7 182.789 grn plates 200 dec i H2O; sl dil acid; s

NH4OH 1877 Nickel(II) fluoride NiF2 10028-18-9 96.690 yel tetr cry 1380 4.7 2.56

25 i EtOH, eth 1878 Nickel(II) fluoride tetrahydrate NiF2 ∙ 4H2O 13940-83-5 168.752 grn pow sl H2O 1879 Nickel(II) hydroxide Ni(OH)2 12054-48-7 92.708 grn hex cry 230 dec 4.1 0.00015

1880 Nickel(II) hydroxide monohydrate Ni(OH)2 ∙ H2O 36897-37-7 110.723 grn powder 0.0001520 s dil acid 1881 Nickel(II) iodate Ni(IO3)2 13477-98-0 408.498 yel needles 5.07 1.1

30 sl H2O 1882 Nickel(II) iodate tetrahydrate Ni(IO3)2 ∙ 4H2O 13477-99-1 480.560 yel hex cry dec 100 5.07 sl H2O 1883 Nickel(II) iodide NiI2 13462-90-3 312.502 blk hex cry; hyg 800 subl 5.22 154

1884 Nickel(II) iodide hexahydrate NiI2 ∙ 6H2O 7790-34-3 420.593 grn monocl cry; hyg

15425 vs EtOH

1885 Nickel(II) nitrate Ni(NO3)2 13138-45-9 182.702 grn cry 99.2 25 s EtOH

1886 Nickel(II) nitrate hexahydrate Ni(NO3)2 ∙ 6H2O 13478-00-7 290.794 grn monocl cry; hyg

56 dec 2.05 99.225 s EtOH

1887 Nickel(II) oxalate dihydrate NiC2O4 ∙ 2H2O 6018-94-6 182.742 grn-wh solid dec 150 0.001225 i H2O; s acid, NH4OH

1888 Nickel(II) oxide NiO 1313-99-1 74.692 grn cub cry 1957 6.72 i H2O; s acid 1889 Nickel(II) perchlorate hexahydrate Ni(ClO4)2 ∙ 6H2O 13637-71-3* 365.686 grn hex needles 140 158.825 s EtOH, ace 1890 Nickel(II) phosphate octahydrate Ni3(PO4)2 ∙ 8H2O 10381-36-9* 510.145 grn plates s acid 1891 Nickel(II) selenate hexahydrate NiSeO4 ∙ 6H2O 15060-62-5* 309.74 grn tetr cry 2.314 35.520 1892 Nickel(II) selenide NiSe 1314-05-2 137.65 yel-grn hex cry 980 7.2 1893 Nickel(II) stannate dihydrate NiSnO3 ∙ 2H2O 12035-38-0 261.432 grn pow dec 120 1894 Nickel(II) sulfate NiSO4 7786-81-4 154.756 grn-yel orth cry 840 dec 4.01 40.4

1895 Nickel(II) sulfate hexahydrate NiSO4 ∙ 6H2O 10101-97-0 262.847 blue-grn tetr cry ≈100 dec 2.07 40.425 sl EtOH 1896 Nickel(II) sulfate heptahydrate NiSO4 ∙ 7H2O 10101-98-1 280.862 grn orth cry 1.98 40.425 s EtOH 1897 Nickel(II) sulfide NiS 16812-54-7 90.758 yel hex cry 976 5.5 i H2O 1898 Nickel(II) thiocyanate Ni(SCN)2 13689-92-4 174.857 grn pwd 55.0

1899 Nickel(II) titanate NiTiO3 12035-39-1 154.558 brn hex cry 5.0 1900 Nickel(II,III) sulfide Ni3S4 12137-12-1 304.340 cub cry 995 4.77 1901 Nickel(III) oxide Ni2O3 1314-06-3 165.385 gray-blk cub cry ≈600 dec i H2O; s hot acid 1902 Niobium Nb 7440-03-1 92.906 gray metal; cub 2477 4741 8.57 i acid 1903 Niobocene dichloride Nb(C5H5)2Cl2 12793-14-5 293.998 hyg blk cry sl tol 1904 Niobium boride (NbB) NbB 12045-19-1 103.717 gray orth cry 2270 7.5 1905 Niobium boride (NbB2) NbB2 12007-29-3 114.528 gray hex cry 3050 6.97 1906 Niobium carbide (NbC) NbC 12069-94-2 104.917 gray cub cry 3608 4300 7.82 i H2O, acid 1907 Niobium carbide (Nb2C) Nb2C 12011-99-3 197.824 refrac hex cry 3080 7.8 i H2O 1908 Niobium nitride NbN 24621-21-4 106.913 gray cry; cub 2300 8.47 i HCl, acid 1909 Niobium phosphide NbP 12034-66-1 123.880 tetr cry 6.5 1910 Niobium silicide NbSi2 12034-80-9 149.077 gray hex cry 1950 5.7 1911 Niobium(II) oxide NbO 12034-57-0 108.905 gray cub cry 1937 7.30 1912 Niobium(III) bromide NbBr3 15752-41-7 332.618 dark brn solid subl 400 1913 Niobium(III) chloride NbCl3 13569-59-0 199.265 blk solid 1914 Niobium(III) fluoride NbF3 15195-53-6 149.901 blue cub cry 4.2 1915 Niobium(III) iodide NbI3 13870-20-7 473.619 blk solid dec 510 1916 Niobium(IV) bromide NbBr4 13842-75-6 412.522 dark brn cry subl 300 4.72 reac H2O 1917 Niobium(IV) chloride NbCl4 13569-70-5 234.718 viol-blk monocl

cry dec 800 275 subl 3.2 reac H2O

1918 Niobium(IV) fluoride NbF4 13842-88-1 168.900 blk tetr cry; hyg >350 dec 4.01 1919 Niobium(IV) iodide NbI4 13870-21-8 600.524 gray orth cry 503 5.6 reac H2O 1920 Niobium(IV) oxide NbO2 12034-59-2 124.905 wh tetr cry or

powder 1901 5.9

1921 Niobium(IV) selenide NbSe2 12034-77-4 250.83 gray hex cry >1300 6.3 1922 Niobium(IV) sulfide NbS2 12136-97-9 157.036 blk rhomb cry 4.4 1923 Niobium(IV) telluride NbTe2 12034-83-2 348.11 hex cry 7.6 1924 Niobium(V) bromide NbBr5 13478-45-0 492.426 oran orth cry 265.2 361.6 4.36 s H2O, EtOH 1925 Niobium(V) chloride NbCl5 10026-12-7 270.171 yel monocl cry;

hyg 205.8 247.4 2.78 reac H2O; s HCl,

ctc 1926 Niobium(V) dioxyfluoride NbO2F 15195-33-2 143.903 wh cub cry 4.0 1927 Niobium(V) ethoxide Nb(OC2H5)5 3236-82-6 318.209 col hyg liq 5 203 1.258 reac H2O; s peth 1928 Niobium(V) fluoride NbF5 7783-68-8 187.898 col monocl cry;

hyg 80 234 2.70 reac H2O; sl CS2,

chl 1929 Niobium(V) iodide NbI5 13779-92-5 727.428 yel-blk monocl cry 327 5.32 reac H2O 1930 Niobium(V) oxide Nb2O5 1313-96-8 265.810 wh orth cry 1500 4.47 i H2O; s HF 1931 Niobium(V) oxybromide NbOBr3 14459-75-7 348.617 yel-brn cry ≈320 dec subl 1932 Niobium(V) oxychloride NbOCl3 13597-20-1 215.264 wh tetr cry subl 3.72 1933 Nitrogen N2 7727-37-9 28.014 col gas -210.0 -195.798 1.145 g/L sl H2O; i EtOH 1934 Nitramide NO2NH2 7782-94-7 62.028 unstab wh cry 72 dec s H2O, EtOH, ace,

eth; i chl 1935 Nitric acid HNO3 7697-37-2 63.013 col liq; hyg -41.6 83 1.5129

20 vs H2O 1936 Nitrous acid HNO2 7782-77-6 47.014 stab only in soln 1937 Nitrous oxide N2O 10024-97-2 44.012 col gas -90.8 -88.48 1.799 g/L sl H2O; s EtOH, eth 1938 Nitric oxide NO 10102-43-9 30.006 col gas -163.6 -151.74 1.226 g/L sl H2O

1939 Nitrogen dioxide NO2 10102-44-0 46.006 brn gas; equil with N2O4

see N2O4 1.880 g/L reac H2O

1940 Nitrogen trioxide N2O3 10544-73-7 76.011 blue solid or liq (low temp)

-101.1 ≈3 dec 1.42 reac H2O

1941 Nitrogen tetroxide N2O4 10544-72-6 92.011 col liq; equil with NO2

-9.3 21.15 1.4520 reac H2O

1942 Nitrogen pentoxide N2O5 10102-03-1 108.010 col hex cry 33 sp 2.0 s chl; sl ctc 1943 Nitrogen tribromide NBr3 15162-90-0 253.719 unstab solid exp -100 1944 Nitrogen trichloride NCl3 10025-85-1 120.366 yel oily liq; exp -40 71 1.653 i H2O; s CS2, bz, ctc 1945 Nitrogen trifluoride NF3 7783-54-2 71.002 col gas -206.79 -128.75 2.902 g/L i H2O 1946 Nitrogen triiodide NI3 13444-85-4 394.720 unstab blk cry;

exp 1947 Nitrogen chloride difluoride NClF2 13637-87-1 87.457 col gas -195 -67 3.575 g/L 1948 Chloramine NH2Cl 10599-90-3 51.476 yel liq -66 s H2O, EtOH, eth; sl

bz, ctc 1949 Fluoramine NH2F 15861-05-9 35.021 unstab gas ≈-110 1.431 g/L 1950 Difluoramine NHF2 10405-27-3 53.012 col gas -116 -23 2.167 g/L 1951 cis-Difluorodiazine N2F2 13812-43-6 66.010 col gas <-195 -105.75 2.698 g/L 1952 trans-Difluorodiazine N2F2 13776-62-0 66.010 col gas -172 -111.45 2.698 g/L 1953 Tetrafluorohydrazine N2F4 10036-47-2 104.007 col gas -164.5 -74 4.251 g/L 1954 Nitrosyl bromide NOBr 13444-87-6 109.910 red gas -56 ≈0 4.492 g/L reac H2O 1955 Nitrosyl chloride NOCl 2696-92-6 65.459 yel gas -59.6 -5.5 2.676 g/L reac H2O 1956 Nitrosyl fluoride NOF 7789-25-5 49.004 col gas -132.5 -59.9 2.003 g/L 1957 Trifluoramine oxide NOF3 13847-65-9 87.001 col gas -161 -87.5 3.556 g/L 1958 Nitryl chloride NO2Cl 13444-90-1 81.459 col gas -145 -15 3.330 g/L 1959 Nitryl fluoride NO2F 10022-50-1 65.004 col gas -166 -72.4 2.657 g/L reac H2O 1960 Nitrogen selenide N4Se4 12033-88-4 371.87 red monocl cry;

hyg exp 4.2 i H2O, eth, EtOH; sl

bz, CS2 1961 Nobelium No 10028-14-5 259.000 metal 827 1962 Osmium Os 7440-04-2 190.23 blue-wh metal;

hex 3033 5008 22.58720 s aqua regia

1963 Osmocene Os(C5H5)2 1273-81-0 320.42 col cry 229 1964 Osmium carbonyl Os3(CO)12 15696-40-9 906.81 yel cry 224 3.48 1965 Osmium pentacarbonyl Os(CO)5 16406-49-8 330.28 col liq -15 dec 100 s os 1966 Osmium nonacarbonyl Os2(CO)9 28411-13-4 632.55 oran-yel cry 65 dec s hc 1967 Osmium(II) chloride OsCl2 13444-92-3 261.14 hyg brn solid dec >450 s EtOH, eth 1968 Osmium(III) bromide OsBr3 59201-51-3 429.94 dark gray cry 340 dec i H2O, os, acid 1969 Osmium(III) chloride OsCl3 13444-93-4 296.59 gray cub cry 450 dec i H2O, os; s conc

acid 1970 Osmium(IV) chloride OsCl4 10026-01-4 332.04 red-blk orth cry 323 dec 4.38 reac H2O; i os 1971 Osmium(IV) fluoride OsF4 54120-05-7 266.22 yel cry 230 reac H2O 1972 Osmium(IV) oxide OsO2 12036-02-1 222.23 yel-brn tetr cry dec 500 11.4 i H2O, acid 1973 Osmium(V) fluoride OsF5 31576-40-6 285.22 hyg blue-grn cry 70 233 reac H2O 1974 Osmium(VI) fluoride OsF6 13768-38-2 304.22 yel cub cry 33.4 47.5 4.1 reac H2O 1975 Osmium(VI) tetrachloride oxide OsOCl4 36509-15-6 348.04 dark brn hyg cry 32 200 reac H2O; s hc 1976 Osmium(VIII) oxide OsO4 20816-12-0 254.23 yel monocl cry 40.6 131.2 5.1 6.44

20 sl H2O; s ctc, bz, EtOH, eth

1977 Oxygen O2 7782-44-7 31.998 col gas -218.79 -182.953 1.308 g/L sl H2O, EtOH, os 1978 Ozone O3 10028-15-6 47.998 blue gas -193 -111.35 1.962 g/L sl H2O 1979 Palladium Pd 7440-05-3 106.42 silv-wh metal; cub 1554.8 2963 12.0 s aqua regia 1980 Palladium(II) acetate Pd(C2H3O2)2 3375-31-3 224.51 oran-brn cry 205 dec i H2O; s MeCN, eth,

ace 1981 Palladium(II) bromide PdBr2 13444-94-5 266.23 red-blk monocl

cry; hyg 250 dec ≈5.2 i H2O

1982 Palladium(II) chloride PdCl2 7647-10-1 177.33 red rhomb cry; hyg

679 4.0 s H2O, EtOH, ace

1983 Palladium(II) chloride dihydrate PdCl2 ∙ 2H2O 7647-10-1* 213.36 brn cry s H2O, EtOH, ace 1984 Palladium(II) cyanide Pd(CN)2 2035-66-7 158.45 yel solid dec 1985 Palladium(II) fluoride PdF2 13444-96-7 144.42 viol tetr cry; hyg 952 5.76 reac H2O 1986 Palladium(II) iodide PdI2 7790-38-7 360.23 blk cry 360 dec 6.0 i H2O, EtOH, eth 1987 Palladium(II) nitrate Pd(NO3)2 10102-05-3 230.43 brn hyg cry dec sl H2O; s dil HNO3 1988 Palladium(II) oxide PdO 1314-08-5 122.42 grn-blk tetr cry 750 dec 8.3 i H2O, acid; sl aqua

regia 1989 Palladium(II) 2,4-pentanedioate Pd(CH3COCHCOCH3)2 14024-61-4 304.64 oran-yel cry 205 dec s bz, chl 1990 Palladium(II) sulfate dihydrate PdSO4 ∙ 2H2O 13566-03-5 238.51 grn-brn cry dec 1991 Palladium(II) sulfide PdS 12125-22-3 138.49 gray tetr cry 6.7 1992 cis-Dichlorodiamminepalladium(II) Pd(NH3)2Cl2 15684-18-1 211.39 yel pow 0.025

1993 trans-Dichlorodiamminepalladium (II)

Pd(NH3)2Cl2 13782-33-7 211.39 yel solid 2.50

1994 Phosphorus (white) P 7723-14-0 30.974 col waxlike cub cry

44.15 280.5 1.823 i H2O; sl bz, EtOH, chl; s CS2

1995 Phosphorus (red) P 7723-14-0 30.974 red-viol amorp powder

579.2 431 sp 2.16 i H2O, os

1996 Phosphorus (black) P 7723-14-0 30.974 blk orth cry or amorp solid

610 2.69 i os

1997 Phosphine PH3 7803-51-2 33.998 col gas; flam -133.8 -87.75 1.390 g/L i H2O; sl EtOH, eth 1998 Diphosphine P2H4 13445-50-6 65.980 col liq -99 63.5 dec reac H2O 1999 Diphosphorus tetrachloride P2Cl4 13497-91-1 203.760 col oily liq -28 ≈180 dec 2000 Diphosphorus tetrafluoride P2F4 13824-74-3 137.942 col gas -86.5 -6.2 5.638 g/L 2001 Diphosphorus tetraiodide P2I4 13455-00-0 569.566 red tricl needles 125.5 dec 3.89 2002 Phosphonium chloride PH4Cl 24567-53-1 70.459 gas -27 sp 2.880 g/L reac H2O 2003 Phosphonium iodide PH4I 12125-09-6 161.910 col tetr cry 18.5 62.5 2.86 reac H2O, EtOH 2004 Phosphoric acid H3PO4 7664-38-2 97.995 col visc liq 42.4 407 548

20 s EtOH 2005 Phosphotungstic acid H3PW12O40 12067-99-1 2880.05 wh-yel cry 89 vs H2O; s EtOH, eth 2006 Phosphonic acid H3PO3 13598-36-2 81.996 wh hyg cry 74.4 200 1.65 309

0 vs EtOH 2007 Phosphinic acid HPH2O2 6303-21-5 65.997 hyg cry or col oily

liq 26.5 130 1.49 vs H2O, EtOH, eth

2008 Metaphosphoric acid HPO3 37267-86-0 79.980 gl solid; hyg sl H2O; s EtOH 2009 Hypophosphoric acid H4P2O6 7803-60-3 161.976 col orth cry 73 dec vs H2O 2010 Diphosphoric acid H4P2O7 2466-09-3 177.975 wh cry 71.5 709

2011 Difluorophosphoric acid HPO2F2 13779-41-4 101.978 col liq ≈-94 110 dec 1.583 reac H2O 2012 Hexafluorophosphoric acid HPF6 16940-81-1 145.972 col oily liq 25 dec reac H2O 2013 Fluorophosphonic acid H2PFO3 13537-32-1 99.986 col visc liq <-70 1.82 vs H2O 2014 Phosphorus nitride (P3N5) P3N5 12136-91-3 162.955 yel-brn solid 800 dec i H2O; s os 2015 Phosphorus sesquisulfide P4S3 1314-85-8 220.090 yel-grn orth cry 173 407 2.03 i H2O; s bz; vs CS2 2016 Phosphorus heptasulfide P4S7 12037-82-0 348.350 pale yel monocl

cry 308 523 2.19 sl CS2

2017 Phosphonitrilic chloride trimer (PNCl2)3 940-71-6 347.659 wh hyg cry 128.8 1.98 reac H2O 2018 Phosphorus(III) bromide PBr3 7789-60-8 270.686 col liq -41.5 173.2 2.8 reac H2O, EtOH; s

ace, CS2 2019 Phosphorus(III) dibromide fluoride PBr2F 15597-39-4 209.780 col liq -115 78.5 2020 Phosphorus(III) bromide difluoride PBrF2 15597-40-7 148.875 col gas -133.8 -16.1 6.085 g/L 2021 Phosphorus(III) chloride PCl3 7719-12-2 137.333 col liq -93 76 1.574 reac H2O, EtOH; s

bz, chl, eth 2022 Phosphorus(III) dichloride fluoride PCl2F 15597-63-4 120.878 col gas -144 13.85 4.941 g/L 2023 Phosphorus(III) chloride difluoride PClF2 14335-40-1 104.424 col gas -164.8 -47.3 4.268 g/L 2024 Phosphorus(III) fluoride PF3 7783-55-3 87.969 col gas -151.5 -101.8 3.596 g/L reac H2O 2025 Phosphorus(III) iodide PI3 13455-01-1 411.687 red-oran hex cry;

hyg 61.2 227 dec 4.18 reac H2O; s EtOH

2026 Phosphorus(III) oxide P2O3 1314-24-5 109.946 col monocl cry or liq

23.8 173 2.13 reac H2O

2027 Tetraphosphorus(III) hexoxide P4O6 12440-00-5 219.891 soft wh cry 23.8 175.4 2028 Phosphorus(III) selenide P2Se3 1314-86-9 298.83 oran-red cry 245 ≈380 1.31 reac H2O; s bz, ctc,

CS2, ace 2029 Phosphorus(III) sulfide P2S3 12165-69-4 158.143 yel solid 290 490 reac H2O; s EtOH,

eth, CS2 2030 Phosphorus(V) bromide PBr5 7789-69-7 430.494 yel orth cry, hyg ≈100 dec 3.61 reac H2O, EtOH; s

CS2, ctc 2031 Phosphorus(V) tetrabromide

fluoride PBr4F 369.588 pale yel cry 87 dec

2032 Phosphorus(V) dibromide trifluoride

PBr2F3 13445-58-4 247.777 yel-red liq -20 15 dec

2033 Phosphorus(V) chloride PCl5 10026-13-8 208.239 wh-yel tetr cry; hyg

167 tp 160 sp 2.1 reac H2O; s CS2, ctc

2034 Phosphorus(V) tetrachloride fluoride

PCl4F 13498-11-8 191.784 col liq -59 30 dec

2035 Phosphorus(V) trichloride difluoride

PCl3F2 13537-23-0 175.330 col liq -63

2036 Phosphorus(V) dichloride trifluoride

PCl2F3 13454-99-4 158.875 col gas -125 7.1 6.494 g/L

2037 Phosphorus(V) chloride tetrafluoride

PClF4 13498-11-8 142.421 col gas -132 -43.4 5.821 g/L

2038 Phosphorus(V) fluoride PF5 7647-19-0 125.966 col gas -93.8 -84.6 5.149 g/L reac H2O 2039 Phosphorus(V) oxide P2O5 1314-56-3 141.945 wh orth cry; hyg 562 605 2.30 reac H2O, EtOH 2040 Phosphorus(V) selenide P2Se5 1314-82-5 456.75 blk-purp amorp

solid reac hot H2O, ctc; i

CS2 2041 Phosphorus(V) sulfide P2S5 1314-80-3 222.273 grn-yel hyg cry 285 515 2.03 reac H2O; s CS2 2042 Phosphonic difluoride POF2H 14939-34-5 85.978 volatile liq >-120 ≈60 (gas

unstab)

2043 Phosphoryl bromide POBr3 7789-59-5 286.685 faint oran plates 55 191.7 2.822 reac H2O; s bz, eth, chl

2044 Phosphoryl dibromide chloride POBr2Cl 13550-31-7 242.234 yel solid 31 165 2045 Phosphoryl dibromide fluoride POBr2F 14014-19-8 225.779 col liq -117.2 110.1 2046 Phosphoryl bromide dichloride POBrCl2 13455-03-3 197.783 col liq 11 136.5 2.104

2047 Phosphoryl bromide difluoride POBrF2 14014-18-7 164.874 col liq -84.8 31.6 2048 Phosphoryl bromide chloride

fluoride POBrClF 14518-81-1 181.328 col liq 79

2049 Phosphoryl chloride POCl3 10025-87-3 153.332 col liq 1.18 105.5 1.645 reac H2O, EtOH 2050 Phosphoryl dichloride fluoride POCl2F 13769-76-1 136.877 col liq -80.1 52.9 2051 Phosphoryl chloride difluoride POClF2 13769-75-0 120.423 col gas -96.4 3.1 4.922 g/L 2052 Phosphoryl fluoride POF3 13478-20-1 103.968 col gas -39.1 tp -39.7 sp 4.250 g/L reac H2O 2053 Phosphoryl iodide POI3 13455-04-4 427.686 viol cry 53 2054 Phosphorothioc tribromide PSBr3 3931-89-3 302.751 yel cry 37.8 212 dec 2.85 2055 Phosphorothioc dibromide fluoride PSBr2F 13706-10-0 241.845 yel liq -75.2 125.3 2056 Phosphorothioc bromide difluoride PSBrF2 13706-09-7 180.940 yel liq -136.9 35.5 2057 Phosphorothioc trichloride PSCl3 3982-91-0 169.398 fuming liq -36.2 125 1.635 reac H2O; s bz, ctc,

chl, CS2 2058 Phosphorothioc dichloride fluoride PSCl2F 155698-29-6 152.943 col liq -96.0 64.7 2059 Phosphorothioc chloride difluoride PSClF2 2524-02-9 136.489 col gas -155.2 6.3 5.579 g/L 2060 Phosphorothioc trifluoride PSF3 2404-52-6 120.034 col gas -148.8 -52.25 4.906 g/L 2061 Phosphorothioc triiodide PSI3 63972-04-3 443.752 yel cry 48 dec 2062 Platinum Pt 7440-06-4 195.084 silv-gray metal;

cub 1768.2 3825 21.5 i acid; s aqua regia

2063 Hexachloroplatinic acid H2PtCl6 16941-12-1 409.818 hyg yel-brn cry 60 s H2O, EtOH 2064 Hydrogen hexahydroxyplatinate(IV) H2Pt(OH)6 51850-20-5 299.144 yel needles dec 100 s H2O, acid, dil alk 2065 Platinum(II) bromide PtBr2 13455-12-4 354.892 red-brn powder 250 dec 6.65 i H2O 2066 Platinum(II) chloride PtCl2 10025-65-7 265.990 grn hex cry 581 dec 6.0 i H2O, EtOH, eth; s

HCl 2067 Platinum(II) cyanide Pt(CN)2 592-06-3 247.118 pale yel cry i H2O, acid, alk 2068 Platinum(II) iodide PtI2 7790-39-8 448.893 blk powder 325 dec 6.4 i H2O 2069 Platinum(II) oxide PtO 12035-82-4 211.083 blk tetr cry 325 dec 14.1 i H2O, EtOH; s aqua

regia 2070 Platinum(II) sulfide PtS 12038-20-9 227.149 tetr cry 10.25 2071 Platinum(III) bromide PtBr3 25985-07-3 434.796 grn-blk cry 200 dec 2072 Platinum(III) chloride PtCl3 25909-39-1 301.443 grn-blk cry 435 dec 5.26 2073 Platinum(IV) bromide PtBr4 68938-92-1 514.700 brn-blk cry 180 dec 0.41

20 sl EtOH, eth 2074 Platinum(IV) chloride PtCl4 37773-49-2 336.896 red-brn cub cry 327 dec 4.30 142

2075 Platinum(IV) chloride pentahydrate PtCl4 ∙ 5H2O 13454-96-1 426.972 red cry 2.43 s H2O, EtOH 2076 Platinum(IV) fluoride PtF4 13455-15-7 271.078 red cry 600 2077 Platinum(IV) iodide PtI4 7790-46-7 702.702 brn-blk powder 130 dec s H2O 2078 Platinum(IV) oxide PtO2 1314-15-4 227.083 blk hex cry 450 11.8 i H2O; s conc acid,

dil alk 2079 Platinum(IV) sulfide PtS2 12038-21-0 259.214 hex cry 7.85 2080 Platinum(VI) fluoride PtF6 13693-05-5 309.074 red cub cry 61.3 69.1 ≈4.0 2081 cis-Diamminedichloroplatinum Pt(NH3)2Cl2 15663-27-1 300.051 yel solid 270 dec 0.253

2082 trans-Diamminedichloroplatinum Pt(NH3)2Cl2 14913-33-8 300.051 pale yel solid 270 dec 0.036 25 s DMF, DMSO

2083 Hexachloroplatinic acid hexahydrate

H2PtCl6 ∙ 6H2O 16941-12-1 517.909 brn-yel hyg cry 60 2.43 14018 vs EtOH

2084 Platinum silicide PtSi 12137-83-6 223.170 orth cry 1229 12.4 2085 Plutonium Pu 7440-07-5 244 silv-wh metal;

monocl 640 3228 19.7

2086 Plutonium nitride PuN 12033-54-4 258 gray cub cry 2550 14.4 2087 Plutonium(II) oxide PuO 12035-83-5 260 cub cry 14.0 2088 Plutonium(III) bromide PuBr3 15752-46-2 484 grn orth cry 681 6.75 s H2O 2089 Plutonium(III) chloride PuCl3 13569-62-5 350 grn hex cry 760 5.71 s H2O 2090 Plutonium(III) fluoride PuF3 13842-83-6 301 purp hex cry 1396 9.33 i H2O; sl acid 2091 Plutonium(III) iodide PuI3 13813-46-2 625 grn orth cry; hyg 777 6.92 s H2O 2092 Plutonium(III) oxide Pu2O3 12036-34-9 536 blk cub cry 2085 10.5 2093 Plutonium(IV) fluoride PuF4 13709-56-3 320 red-brn monocl

cry 1037 7.1

2094 Plutonium(IV) oxide PuO2 12059-95-9 276 yel-brn cub cry 2390 11.5 2095 Plutonium(VI) fluoride PuF6 13693-06-6 358 red-brn orth cry 51.6 5.08 2096 Polonium Po 7440-08-6 209 silv metal; cub 254 962 9.20 2097 Polonium(IV) chloride PoCl4 10026-02-5 351 yel hyg cry ≈300 390 s H2O, EtOH, ace 2098 Polonium(IV) oxide PoO2 7446-06-2 241 yel cub cry 500 dec 8.9 2099 Potassium K 7440-09-7 39.098 soft silv-wh metal;

cub 63.5 759 0.89 reac H2O

2101 Potassium aluminate trihydrate K2Al2O4 ∙ 3H2O 12003-63-3* 250.204 wh orth cry 2.13 vs H2O; i EtOH 2102 Potassium aluminum silicate KAlSi3O8 1327-44-2 278.332 col monocl cry 2.56 i H2O 2103 Potassium aluminum sulfate KAl(SO4)2 10043-67-1 258.205 wh hyg powder 5.9

2104 Potassium aluminum sulfate dodecahydrate

KAl(SO4)2 ∙ 12H2O 7784-24-9 474.389 col cry ≈100 dec 1.72 5.920

2105 Potassium amide KNH2 17242-52-3 55.121 wh/yel-grn hyg cry

335 reac H2O, EtOH

2106 Potassium arsenate K3AsO4 13464-36-3 256.215 col cry 2.8 125 25

2107 Potassium arsenite KAsO2 13464-35-2 146.019 wh hyg powder s H2O; sl EtOH 2108 Potassium azide KN3 20762-60-1 81.118 tetr cry; exp 2.04 49.7

2109 Potassium borohydride KBH4 13762-51-1 53.941 wh cub cry ≈500 dec 1.11 s H2O 2110 Potassium bromate KBrO3 7758-01-2 167.000 wh hex cry 434 dec 3.27 8.17

25 i EtOH 2111 Potassium bromide KBr 7758-02-3 119.002 col cub cry; hyg 734 1435 2.74 67.825 sl EtOH 2112 Potassium carbonate K2CO3 584-08-7 138.206 wh monocl cry;

hyg 899 dec 2.29 11125 i EtOH

2113 Potassium carbonate sesquihydrate K2CO3 ∙ 1.5H2O 6381-79-9 165.229 granular cry 11120 2114 Potassium chlorate KClO3 3811-04-9 122.549 wh monocl cry 357 dec 2.34 8.61

2115 Potassium chloride KCl 7447-40-7 74.551 wh cub cry 771 1.988 35.525 i eth, ace 2116 Potassium chlorochromate KCrO3Cl 16037-50-6 174.545 oran cry 2.5 reac H2O; s ace,

acid 2117 Potassium chromate K2CrO4 7789-00-6 194.191 yel orth cry 974 2.73 65.0

2118 Potassium citrate monohydrate K3C6H5O7 ∙ H2O 6100-05-6 324.410 col hyg cry 180 dec 1.98 17220 vs H2O; sl EtOH 2119 Potassium cobalt(II) selenate

hexahydrate K2Co(SeO4)2 ∙ 6H2O 28041-86-3 531.14 red monocl cry 2.51

2120 Potassium cyanate KCNO 590-28-3 81.115 wh tetr cry ≈700 dec 2.05 7525 sl EtOH 2121 Potassium cyanide KCN 151-50-8 65.116 wh cub cry; hyg 622 1.55 69.920 sl EtOH 2122 Potassium cyanoaurite KAu(CN)2 13967-50-5 288.099 col cry 3.45 14

20 s H2O; sl EtOH; i eth, ace

2123 Potassium dichromate K2Cr2O7 7778-50-9 294.185 oran-red tricl cry 398 ≈500 dec 2.68 15.1 25

2124 Potassium dihydrogen arsenate KH2AsO4 7784-41-0 180.034 col cry 288 2.87 19 6 i EtOH

2125 Potassium dihydrogen phosphate KH2PO4 7778-77-0 136.085 wh tetr cry 253 dec 2.34 25.0 25 sl EtOH

2126 Potassium dihydrogen phosphonate

KH2PO3 13977-65-6 120.086 col monocl hyg cry

2127 Potassium dithionate K2S2O6 13455-20-4 238.323 col hex cry dec 2.27 sl H2O; i EtOH 2128 Potassium ferricyanide K3Fe(CN)6 13746-66-2 329.244 red cry dec 1.89 48.8

2129 Potassium ferrocyanide trihydrate K4Fe(CN)6 ∙ 3H2O 14459-95-1 422.388 yel monocl cry 60 dec 1.85 36.025 i EtOH, eth 2130 Potassium fluoride KF 7789-23-3 58.096 wh cub cry 858 1502 2.48 10225

2131 Potassium fluoride dihydrate KF ∙ 2H2O 13455-21-5 94.127 monocl cry 41 dec 2.5 10225 2132 Potassium fluoroborate KBF4 14075-53-7 125.903 col orth cry 530 2.505 0.55

25 sl EtOH 2133 Potassium fluorotantalate K2TaF7 16924-00-8 392.134 col cry 730 5.24 0.5

2134 Potassium formate KCHO2 590-29-4 84.116 col hyg cry 167 1.91 331 18

2135 Potassium hexachloroosmate(IV) K2OsCl6 16871-60-6 481.15 red cub cry vs H2O; sl EtOH 2136 Potassium hexachloroplatinate K2PtCl6 16921-30-5 485.999 yel-oran cub cry 250 dec 3.50 0.77

20 i EtOH 2137 Potassium hexacyanocobaltate K3Co(CN)6 13963-58-1 332.332 yel monocl cry dec 1.91 vs H2O; i EtOH 2138 Potassium

hexafluoromanganate(IV) K2MnF6 16962-31-5 247.125 yel hex cry reac H2O

2139 Potassium hexafluorosilicate K2SiF6 16871-90-2 220.273 wh cry dec 2.27 0.084 20 i EtOH

2140 Potassium hexafluorozirconate(IV) K2ZrF6 16923-95-8 283.411 col monocl cry 3.48 0.78 2

2141 Potassium hydride KH 7693-26-7 40.106 cub cry 619 1.43 reac H2O 2142 Potassium hydrogen arsenate K2HAsO4 21093-83-4 218.125 col monocl prisms 300 dec 18.7

6 i EtOH 2143 Potassium hydrogen carbonate KHCO3 298-14-6 100.115 col monocl cry ≈100 dec 2.17 36.2

25 i EtOH 2144 Potassium hydrogen fluoride KHF2 7789-29-9 78.103 col tetr cry 238.8 2.37 39.2

20 i EtOH 2145 Potassium hydrogen iodate KH(IO3)2 13455-24-8 389.911 col cry dec 1.3

15 sl H2O; i EtOH 2146 Potassium hydrogen oxalate

hemihydrate KHC2O4 ∙ 0.5H2O 127-95-7 wh cry dec 2.09 2.520 sl EtOH

2147 Potassium hydrogen phosphate K2HPO4 7758-11-4 174.176 wh hyg cry dec 168 25 s EtOH

2148 Potassium hydrogen phosphite K2HPO3 13492-26-7 158.177 wh hyg powder dec 170 20 i EtOH

2149 Potassium hydrogen selenite KHSeO3 7782-70-9 167.06 hyg orth cry >100 dec s H2O; sl EtOH 2150 Potassium hydrogen sulfate KHSO4 7646-93-7 136.169 wh monocl cry;

hyg ≈200 2.32 50.625

2151 Potassium hydrogen sulfide KHS 1310-61-8 72.171 wh hex cry; hyg ≈450 1.69 s H2O, EtOH 2152 Potassium hydrogen sulfide

hemihydrate KHS ∙ 0.5H2O 1310-61-8* 81.179 wh-yel hyg cry ≈175 1.7 vs H2O, EtOH

2153 Potassium hydrogen sulfite KHSO3 7773-03-7 120.169 wh cry powder 190 dec 49 20 i EtOH

2154 Potassium hydrogen tartrate KHC4H4O6 868-14-4 188.177 wh cry 1.98 0.57 20 s acid, alk; i EtOH

2155 Potassium hydroxide KOH 1310-58-3 56.105 wh rhomb cry; hyg 406 1327 2.044 12125 s EtOH; s MeOH 2156 Potassium hypochlorite KOCl 7778-66-7 90.550 exists only in aq

soln 2157 Potassium phosphinate KHPO 7782-87-8 104.087 wh hyg cry dec vs HO; s EtOH

2158 Potassium iodate KIO3 7758-05-6 214.001 wh monocl cry 560 dec 3.89 9.22 25

2159 Potassium iodide KI 7681-11-0 166.003 col cub cry 681 1323 3.12 14825 sl EtOH 2160 Potassium iron(III) oxalate

trihydrate K3Fe(C2O4)3 ∙ 3H2O 491.243 grn monocl cry 100 230 dec 2.133 4.70 i EtOH

2161 Potassium manganate K2MnO4 10294-64-1 197.133 grn cry 190 dec s H2O; reac HCl 2162 Potassium metaarsenate KAsO3 19197-73-0 162.018 wh solid 660 2163 Potassium metabisulfite K2S2O5 16731-55-8 222.324 wh powder ≈150 dec 2.3 49.5

25 reac acid; i EtOH 2164 Potassium metaborate KBO2 13709-94-9 81.908 wh hex cry 947 ≈2.3 2165 Potassium molybdate K2MoO4 13446-49-6 238.14 wh hyg cry 919 2.3 183

25 i EtOH 2166 Potassium niobate KNbO3 12030-85-2 180.002 wh rhomb cry ≈1100 4.64 i H2O 2167 Potassium nitrate KNO3 7757-79-1 101.103 col orth cry or

powder 334 400 dec 2.105 38.325 i EtOH

2168 Potassium nitrite KNO2 7758-09-0 85.104 wh hyg cry 438 537 exp 1.915 312 25 sl EtOH

2169 Potassium oxalate K2C2O4 583-52-8 166.216 wh pwd sl H2O 2170 Potassium oxalate monohydrate K2C2O4 ∙ H2O 6487-48-5 184.231 col cry 160 dec 2.13 36.420 2171 Potassium oxide K2O 12136-45-7 94.196 gray cub cry 740 2.35 s H2O, EtOH, eth 2172 Potassium perbromate KBrO4 22207-96-1 183.000 wh cry 275 dec 4.21

2173 Potassium percarbonate monohydrate

K2C2O6 ∙ H2O 589-97-9 216.230 oran or blue pow 6.520

2174 Potassium perchlorate KClO4 7778-74-7 138.549 col orth cry; hyg 525 2.52 2.08 25

2175 Potassium periodate KIO4 7790-21-8 230.001 col tetr cry 582 exp 3.618 0.51 25

2176 Potassium permanganate KMnO4 7722-64-7 158.034 purp orth cry dec 2.7 7.60 25 reac EtOH

2177 Potassium peroxide K2O2 17014-71-0 110.196 yel amorp solid 490 reac H2O 2178 Potassium persulfate K2S2O8 7727-21-1 270.322 col cry ≈100 dec 2.48 4.7

2179 Potassium phosphate K3PO4 7778-53-2 212.266 wh orth cry; hyg 1340 2.564 106 25 i EtOH

2180 Potassium pyrophosphate K4P2O7 7320-34-5 wh cry dec 1300 s H2 2181 Potassium pyrophosphate

trihydrate K4P2O7 ∙ 3H2O 7790-67-2 384.383 col hyg cry dec 300 2.33 vs H2O; i EtOH

2182 Potassium pyrosulfate K2S2O7 7790-62-7 254.323 col needles ≈325 2.28 s H2O 2183 Potassium selenate K2SeO4 7790-59-2 221.16 wh powder 3.07 114

2184 Potassium selenide K2Se 1312-74-9 157.16 red cub cry; hyg 800 2.29 s H2O 2185 Potassium selenite K2SeO3 10431-47-7 205.16 wh hyg cry 875 dec 217

25 sl EtOH 2186 Potassium silver cyanide KAg(CN)2 506-61-6 199.000 wh cry s H2O 2187 Potassium sodium tartrate

tetrahydrate KNaC4H4O6 ∙ 4H2O 6381-59-5 282.220 wh cry ≈70 dec anh at 130 1.79 vs H2O; i EtOH

2188 Potassium stannate trihydrate K2SnO3 ∙ 3H2O 12142-33-5* 298.951 col cry 3.20 vs H2O; i EtOH 2189 Potassium stearate KC18H35O2 593-29-3 322.568 wh pow sl cold H2O; s hot

H2O, EtOH 2190 Potassium sulfate K2SO4 7778-80-5 174.260 wh orth cry 1069 2.66 12.0

25 i EtOH 2191 Potassium sulfide K2S 1312-73-8 110.262 red-yel cub cry;

hyg 948 1.74 s H2O, EtOH; i eth

2192 Potassium sulfide pentahydrate K2S ∙ 5H2O 37248-34-3 200.338 col rhomb cry 60 vs H2O, EtOH; i eth 2193 Potassium sulfite K2SO3 10117-38-1 158.260 col hex cry 106

25 sl EtOH 2194 Potassium sulfite dihydrate K2SO3 ∙ 2H2O 7790-56-9 194.291 wh monocl cry dec 10720 sl EtOH; dec dil

acid 2195 Potassium superoxide KO2 12030-88-5 71.097 yel tetr cry; hyg 380 2.16 reac H2O 2196 Potassium tellurate(VI) trihydrate K2TeO4 ∙ 3H2O 15571-91-2* 323.84 wh cry powder s H2O 2197 Potassium tellurite K2TeO3 7790-58-1 253.80 wh hyg cry ≈460 dec vs H2O 2198 Potassium tetraborate pentahydrate K2B4O7 ∙ 5H2O 1332-77-0 323.513 wh cry powder 16.530 sl EtOH 2199 Potassium tetrachloroaurate

dihydrate KAuCl4 ∙ 2H2O 13682-61-6 413.908 yel monocl cry s H2O, EtOH, eth

2200 Potassium tetrachloroplatinate K2PtCl4 10025-99-7 415.093 pink-red tetr cry 500 dec 3.38 s H2O; i EtOH 2201 Potassium tetracyanocadmate K2Cd(CN)4 14402-75-6 294.678 cub cry ≈450 1.85 25

20 sl EtOH 2202 Potassium tetracyanonickelate

monohydrate K2[Ni(CN)4] ∙ H2O 14220-17-8* 258.975 red-oran cry dec 100

2203 Potassium tetracyanoplatinate(II) trihydrate

K2Pt(CN)4 ∙ 3H2O 562-76-5* 431.397 col rhomb prisms s H2O

2204 Potassium tetracyanozincate K2Zn(CN)4 14244-62-3 247.676 cry pow vs H2O 2205 Potassium tetraiodomercurate(II) K2HgI4 7783-33-7 786.40 yel hyg cry 4.29 vs H2O; s EtOH,

eth, ace 2206 Potassium thiocyanate KSCN 333-20-0 97.181 col tetr cry; hyg 173 500 dec 1.88 23825 s EtOH 2207 Potassium thiosulfate K2S2O3 10294-66-3 190.325 col hyg cry 165

25 i EtOH 2208 Potassium titanate K2TiO3 12030-97-6 174.062 wh orth cry 1515 3.1 reac H2O 2209 Potassium triiodide monohydrate KI3 ∙ H2O 7790-42-3 437.827 brn monocl cry;

hyg 225 dec 3.5 s H2O; reac EtOH,

eth 2210 Potassium triiodozincate KZnI3 7790-43-4 485.221 hyg cry vs H2O 2211 Potassium thiocarbonate K2CS3 26750-66-3 186.403 yel-red hyg cry vs H2O 2212 Potassium tungstate K2WO4 7790-60-5 326.04 hyg cry 921 3.12 vs H2O; i EtOH 2213 Potassium uranate K2U2O7 7790-63-8 666.251 oran cub cry 6.12 i H2O; s acid

2214 Potassium uranyl nitrate K(UO2)(NO3)3 18078-40-5 495.140 grn-yel cry pow vs H2O 2215 Potassium uranyl sulfate dihydrate K2(UO2)(SO4)2 ∙ 2H2O 27709-53-1 576.381 grn-yel cry pow dec 120 3.36 vs H2O 2216 Potassium zinc sulfate hexahydrate K2Zn(SO4)2 ∙ 6H2O 13932-17-7 443.823 cry s H2O 2217 Potassium zirconium sulfate

trihydrate K4Zr(SO4)4 ∙ 3H2O 53608-79-0 685.914 wh cry pow sl H2O

2218 Praseodymium Pr 7440-10-0 140.908 silv metal; hex 931 3520 6.77 2219 Praseodymium boride PrB6 12008-27-4 205.774 blk cub cry 2610 4.84 2220 Praseodymium nitride PrN 25764-09-4 154.915 cub cry 7.46 2221 Praseodymium silicide PrSi2 12066-83-0 197.079 tetr cry 1712 5.46 2222 Praseodymium(II) iodide PrI2 65530-47-4 394.717 bronze solid 758 2223 Praseodymium(III) bromate Pr(BrO3)3 15162-93-3 524.615 grn cry vs H2O 2224 Praseodymium(III) bromide PrBr3 13536-53-3 380.620 grn hex cry; hyg 693 5.28 s H2O 2225 Praseodymium(III) carbonate

octahydrate Pr2(CO3)3 ∙ 8H2O 14948-62-0 605.964 grn silky plates dec 420 (anh) i H2O; s acid

2226 Praseodymium(III) chloride PrCl3 10361-79-2 247.267 grn hex needles; hyg

786 4.0 96.125 s EtOH

2227 Praseodymium(III) chloride heptahydrate

PrCl3 ∙ 7H2O 10025-90-8 373.374 grn cry 110 dec 96.125 s EtOH

2228 Praseodymium(III) fluoride PrF3 13709-46-1 197.903 grn hex cry 1399 6.3 2229 Praseodymium(III) hydroxide Pr(OH)3 16469-16-2 191.930 grn solid dec 220 3.7 i H2O 2230 Praseodymium(III) iodide PrI3 13813-23-5 521.621 orth hyg cry 738 ≈5.8 s H2O 2231 Praseodymium(III) nitrate Pr(NO3)3 10361-80-5 326.923 pale grn hyg cry 165

25 s EtOH 2232 Praseodymium(III) nitrate

hexahydrate Pr(NO3)3 ∙ 6H2O 15878-77-0 435.014 grn needles 16525 s EtOH, ace

2233 Praseodymium(III) oxide Pr2O3 12036-32-7 329.813 wh hex cry 2183 3760 6.9 2234 Praseodymium(III) perchlorate

hexahydrate Pr(ClO4)3 ∙ 6H2O 13498-07-2* 547.351 hyg grn cry dec 200 s H2O, EtOH

2235 Praseodymium(III) sulfate octahydrate

Pr2(SO4)3 ∙ 8H2O 13510-41-3 714.125 grn monocl cry 2.83 1720 s H2O

2236 Praseodymium(III) sulfide Pr2S3 12038-13-0 378.010 cub cry 1765 5.1 2237 Praseodymium(III) telluride Pr2Te3 12038-12-9 664.62 cub cry 1500 ≈7.0 2238 Praseodymium(IV) fluoride PrF4 15192-24-2 216.902 yel-wh solid dec 90 2239 Promethium Pm 7440-12-2 145 silv metal; hex 1042 3000 7.26 2240 Promethium(III) bromide PmBr3 14325-78-1 385 red cry 625 s H2O 2241 Promethium(III) chloride PmCl3 13779-10-7 251 pale blue hyg cry 655 s H2O 2242 Promethium(III) fluoride PmF3 13709-45-0 202 pink solid 1338 s H2O 2243 Promethium(III) iodide PmI3 13818-73-0 526 red solid 695 2244 Protactinium Pa 7440-13-3 231.036 shiny metal; tetr or

cub 1572 15.4

2245 Protactinium(V) chloride PaCl5 13760-41-3 408.301 yel monocl cry 306 3.74 2246 Radium Ra 7440-14-4 226 wh metal; cub 696 5 2247 Radium bromide RaBr2 10031-23-9 386 wh orth cry 728 5.79 70.6

20 s EtOH 2248 Radium carbonate RaCO3 7116-98-5 286 wh orth cry i H2O 2249 Radium chloride RaCl2 10025-66-8 297 wh orth cry 1000 4.9 24.5

20 s EtOH 2250 Radium fluoride RaF2 20610-49-5 264 wh cub cry 6.7 2251 Radium nitrate Ra(NO3)2 10213-12-4 350 cry 13.9 2252 Radium sulfate RaSO4 7446-16-4 322 wh cry i H2O, acid 2253 Radon Rn 10043-92-2 222 col gas -71 -61.7 9.074 g/L sl H2O 2254 Rhenium Re 7440-15-5 186.207 silv-gray metal 3185 5590 20.8 i HCl 2255 Perrhenic acid HReO4 13768-11-1 251.213 exists only in soln vs H2O, os 2256 Rhenium carbonyl Re2(CO)10 14285-68-8 652.515 yel-wh cry 170 dec 2.87 s os 2257 Rhenium pentacarbonyl bromide Re(CO)5Br 14220-21-4 406.162 wh cry 90 2258 Rhenium pentacarbonyl chloride Re(CO)5Cl 14099-01-5 361.711 wh cry subl 140 2259 Rhenium(III) bromide ReBr3 13569-49-8 425.919 red-brn monocl

cry 500 subl 6.10 s ace, MeOH, EtOH

2260 Rhenium(III) chloride ReCl3 13569-63-6 292.566 red-blk hyg cry 500 dec 4.81 s H2O 2261 Rhenium(III) iodide ReI3 15622-42-1 566.920 blk solid dec 2262 Rhenium(IV) chloride ReCl4 13569-71-6 328.019 purp-blk cry; hyg 300 dec 4.9 2263 Rhenium(IV) fluoride ReF4 15192-42-4 262.201 blue tetr cry >300 subl 7.49 2264 Rhenium(IV) oxide ReO2 12036-09-8 218.206 gray orth cry 900 dec 11.4 2265 Rhenium(IV) selenide ReSe2 12038-64-1 344.13 tricl cry 2266 Rhenium(IV) silicide ReSi2 12038-66-3 242.378 refrac solid 2000 2267 Rhenium(IV) sulfide ReS2 12038-63-0 250.337 tricl cry 7.6 2268 Rhenium(IV) telluride ReTe2 12067-00-4 441.41 orth cry 8.50 2269 Rhenium(V) bromide ReBr5 30937-53-2 585.727 brn solid 110 dec 2270 Rhenium(V) chloride ReCl5 39368-69-9 363.472 brn-blk solid 220 4.9 reac H2O 2271 Rhenium(V) fluoride ReF5 30937-52-1 281.199 yel-grn solid 48 221.3 2272 Rhenium(V) oxide Re2O5 12165-05-8 452.411 blue-blk tetr cry ≈7

2273 Rhenium(VI) chloride ReCl6 31234-26-1 398.925 red-grn solid 29 2274 Rhenium(VI) dioxydifluoride ReO2F2 81155-18-2 256.203 col cry 156 2275 Rhenium(VI) fluoride ReF6 10049-17-9 300.197 yel liq or cub cry 18.5 33.8 4.06(cry) s HNO3 2276 Rhenium(VI) oxide ReO3 1314-28-9 234.205 red cub cry 400 dec 6.9 i H2O, acid, alk 2277 Rhenium(VI) oxytetrachloride ReOCl4 13814-76-1 344.018 brn cry 29.3 223 reac H2O 2278 Rhenium(VI) oxytetrafluoride ReOF4 17026-29-8 278.200 blue solid 108 171.7 2279 Rhenium(VII) fluoride ReF7 17029-21-9 319.196 yel cub cry 48.3 73.7 4.32 2280 Rhenium(VII) oxide Re2O7 1314-68-7 484.410 yel hyg cry 327 360 6.10 s H2O, EtOH, eth,

diox, py 2281 Rhenium(VII) trioxychloride ReO3Cl 7791-09-5 269.658 col liq 4.5 128 3.87 reac H2O 2282 Rhenium(VII) trioxyfluoride ReO3F 42246-24-2 253.203 yel solid 147 164 2283 Rhenium(VII) dioxytrifluoride ReO2F3 57246-89-6 275.201 yel solid 90 185.4 reac H2O 2284 Rhenium(VII) oxypentafluoride ReOF5 23377-53-9 297.198 cream solid 43.8 73.0 2285 Rhenium(VII) sulfide Re2S7 12038-67-4 596.869 brn-blk tetr cry 4.87 i H2O 2286 Rhodium Rh 7440-16-6 102.906 silv-wh metal; cub 1963 3695 12.4 i acid, sl aqua regia 2287 Rhodium carbonyl Rh6(CO)16 28407-51-4 1065.594 red-brn cry 220 dec 2288 Rhodium carbonyl chloride [Rh(CO)2Cl]2 14523-22-9 388.758 red-oran cry 124 s os 2289 Rhodium dodecacarbonyl Rh4(CO)12 19584-30-6 747.743 red hyg cry 150 dec 2.52 reac H2O 2290 Rhodium(III) bromide RhBr3 15608-29-4 342.618 dark brn plates 800 dec 5.56 s H2O; i acid, os 2291 Rhodium(III) chloride RhCl3 10049-07-7 209.265 red monocl cry 717 5.38 i H2O; s alk 2292 Rhodium(III) fluoride RhF3 60804-25-3 159.901 red hex cry 5.4 2293 Rhodium(III) iodide RhI3 15492-38-3 483.619 blk monocl cry;

hyg 6.4

2294 Rhodium(III) nitrate Rh(NO3)3 10139-58-9 288.921 hyg brn solid 600 dec i H2O 2295 Rhodium(III) nitrate dihydrate Rh(NO3)3 ∙ 2H2O 13465-43-5 324.951 blk solid dec i H2O; s aqua regia 2296 Rhodium(III) oxide Rh2O3 12036-35-0 253.809 gray hex cry 1100 dec 8.2 2297 Rhodium(III) oxide pentahydrate Rh2O3 ∙ 5H2O 39373-27-8 309.010 yel pow dec sl H2O; s acid 2298 Rhodium(III) sulfate Rh2(SO4)3 10489-46-0 493.999 red-yel solid >500 dec 2299 Rhodium(IV) oxide RhO2 12137-27-8 134.905 blk tetr cry 7.2 2300 Rhodium(IV) oxide dihydrate RhO2 ∙ 2H2O 12137-27-8 170.936 grn solid dec 8.20 i H2O, sol HCl, alk 2301 Rhodium(VI) fluoride RhF6 13693-07-7 216.896 blk cub cry ≈70 3.1 2302 Rubidium Rb 7440-17-7 85.468 soft silv metal; cub 39.30 688 1.53 reac H2O 2303 Rubidium acetate RbC2H3O2 563-67-7 144.512 wh hyg cry 246 vs H2O 2304 Rubidium aluminum sulfate RbAl(SO4)2 13530-57-9 304.575 hex cry ≈3.1 1.60

20 i EtOH 2305 Rubidium aluminum sulfate

dodecahydrate RbAl(SO4)2 ∙ 12H2O 7784-29-4 520.759 col cub cry ≈100 dec ≈1.9 s H2O; i EtOH

2306 Rubidium azide RbN3 22756-36-1 127.488 tetr cry; exp 317 2.79 107 16

2307 Rubidium bromate RbBrO3 13446-70-3 213.370 cub cry 430 3.68 2.95 25

2308 Rubidium bromide RbBr 7789-39-1 165.372 wh cub cry; hyg 692 1340 3.35 11625

2309 Rubidium carbonate Rb2CO3 584-09-8 230.945 col monocl cry; hyg

837 22320

2310 Rubidium chlorate RbClO3 13446-71-4 168.919 col cry 324 dec 480 3.19 6.63 25 sl H2O

2311 Rubidium chloride RbCl 7791-11-9 120.921 wh cub cry; hyg 724 1390 2.76 93.925 sl EtOH 2312 Rubidium chromate Rb2CrO4 13446-72-5 286.930 yel rhom cry 3.518 76.2

2313 Rubidium dichromate Rb2Cr2O7 13446-73-6 386.924 red tricl or yel monocl cry

3.1 s H2O

2314 Rubidium cyanide RbCN 19073-56-4 111.486 wh cub cry 2.3 s H2O; i EtOH, eth 2315 Rubidium fluoride RbF 13446-74-7 104.466 wh cub cry; hyg 795 1410 3.2 30020 i EtOH 2316 Rubidium fluoroborate RbBF4 18909-68-7 172.273 orth cry 612 dec 2.82 sl H2O 2317 Rubidium formate RbCHO2 3495-35-0 130.486 wh hyg cry dec 2318 Rubidium hexafluorogermanate Rb2GeF6 16962-48-4 357.57 wh cry 696 s H2O 2319 Rubidium hydride RbH 13446-75-8 86.476 wh cub cry; flam ≈170 dec 2.60 reac H2O 2320 Rubidium hydrogen carbonate RbHCO3 19088-74-5 146.485 wh rhomb cry 175 dec 116

2321 Rubidium hydrogen fluoride RbHF2 12280-64-7 124.473 tetr cry 188 3.3 2322 Rubidium hydrogen sulfate RbHSO4 15587-72-1 182.539 col monocl cry 208 2.9 s H2O 2323 Rubidium hydroxide RbOH 1310-82-3 102.475 gray-wh orth cry;

hyg 385 3.2 17330 s EtOH

2324 Rubidium iodate RbIO3 13446-76-9 260.370 monocl or cub cry dec 4.33 2.44 25 vs HCl

2325 Rubidium iodide RbI 7790-29-6 212.372 wh cub cry 656 1300 3.55 16525 s EtOH 2326 Rubidium molybdate Rb2MoO4 13718-22-4 330.87 wh cry 958 s H2O 2327 Rubidium nitrate RbNO3 13126-12-0 147.473 wh hex cry; hyg 310 3.11 65.0

25 vs H2O 2328 Rubidium nitrite RbNO2 13825-25-7 131.474 wh cry 422 vs H2O 2329 Rubidium oxide Rb2O 18088-11-4 186.935 yel-brn cub cry;

hyg 400 dec 4.0 reac H2O

2330 Rubidium perchlorate RbClO4 13510-42-4 184.919 wh hyg cry 550 dec >550 2.9 1.5 25

2331 Rubidium permanganate RbMnO4 13465-49-1 204.404 dark purp cry 300 dec 3.24 sl H2O 2332 Rubidium peroxide Rb2O2 23611-30-5 202.935 wh orth cry 570 3.8 reac H2O 2333 Rubidium selenide Rb2Se 31052-43-4 249.90 wh cub cry 733 3.22 reac H2O

2334 Rubidium sulfate Rb2SO4 7488-54-2 266.999 wh orth cry 1066 3.61 50.8 25

2335 Rubidium sulfide Rb2S 31083-74-6 203.001 wh cub cry 425 2.91 s H2O 2336 Rubidium superoxide RbO2 12137-25-6 117.467 tetr cry 412 ≈3.0 2337 Ruthenium Ru 7440-18-8 101.07 silv-wh metal; hex 2333 4147 12.1 i acid, aqua regia 2338 Ruthenium dodecacarbonyl Ru3(CO)12 15243-33-1 639.33 oran cry 150 dec 2339 Ruthenium pentacarbonyl Ru(CO)5 16406-48-7 241.12 col liq -22 dec 50 i H2O; s EtOH, bz,

chl, hc 2340 Ruthenium nonacarbonyl Ru2(CO)9 63128-11-0 454.23 stab below -40 s hex 2341 Ruthenium nitrosyl chloride

monohydrate Ru(NO)Cl3 ∙ H2O 18902-42-6 255.45 hyg red cry

2342 Hexaammineruthenium(III) chloride Ru(NH3)6Cl3 14282-91-8 309.61 col monocl cry s H2O 2343 Ruthenium(III) bromide RuBr3 14014-88-1 340.78 brn hex cry dec 500 5.3 i H2O, acid, EtOH 2344 Ruthenium(III) chloride RuCl3 10049-08-8 207.43 blk-brn hex cry ≈500 dec 3.1 i H2O; sl EtOH 2345 Ruthenium(III) fluoride RuF3 51621-05-7 158.07 brn rhomb cry ≈600 dec 5.36 i H2O, dil acid 2346 Ruthenium(III) iodide RuI3 13896-65-6 481.78 blk hex cry dec 300 6.0 sl H2O 2347 Ruthenium(III) 2,4-pentanedioate Ru(CH3COCHCOCH3)3 14284-93-6 398.39 red-brn cry 230 2348 Ruthenium(IV) fluoride RuF4 71500-16-8 177.06 yel-red cry reac H2O 2349 Ruthenium(IV) oxide RuO2 12036-10-1 133.07 gray-blk tetr cry dec 1300 7.05 i H2O, acid 2350 Ruthenium(V) fluoride RuF5 14521-18-7 196.06 grn monocl cry 86.5 227 3.90 2351 Ruthenium(VI) fluoride RuF6 13693-08-8 215.06 dark brn orth cry 54 200 dec 3.54 reac H2O 2352 Ruthenium(VIII) oxide RuO4 20427-56-9 165.07 yel monocl prisms 25.4 40 3.29 2.03

20 sl H2O; vs ctc; reac EtOH

2353 Samarium Sm 7440-19-9 150.36 silv metal; rhomb 1072 1794 7.52 2354 Samarium boride SmB6 12008-30-9 215.23 refrac solid 2580 5.07 2355 Samarium silicide SmSi2 12300-22-0 206.53 orth cry 5.14 2356 Samarium(II) bromide SmBr2 50801-97-3 310.17 brn cry 669 reac H2O 2357 Samarium(II) chloride SmCl2 13874-75-4 221.27 brn cry 855 3.69 reac H2O 2358 Samarium(II) fluoride SmF2 15192-17-3 188.36 purp cry reac H2O 2359 Samarium(II) iodide SmI2 32248-43-4 404.17 grn cry 520 reac H2O 2360 Samarium(III) acetate trihydrate Sm(C2H3O2)3 ∙ 3H2O 17829-86-6 381.54 hyg yel-wh solid 1.94 s H2O 2361 Samarium(III) bromate nonahydrate Sm(BrO3)3 ∙ 9H2O 63427-22-5 696.20 pink hex cry 75 dec vs H2O; sl EtOH 2362 Samarium(III) bromide SmBr3 13759-87-0 390.07 yel cry 640 reac H2O 2363 Samarium(III) carbonate Sm2(CO3)3 5895-47-6 480.75 wh-yel pow dec >500 2364 Samarium(III) chloride SmCl3 10361-82-7 256.72 yel cry 682 4.46 93.8

2365 Samarium(III) chloride hexahydrate SmCl3 ∙ 6H2O 13465-55-9 364.81 yel cry dec 2.38 93.825 2366 Samarium(III) fluoride SmF3 13765-24-7 207.36 wh cry 1306 reac H2O 2367 Samarium(III) iodide SmI3 13813-25-7 531.07 oran cry 850 reac H2O 2368 Samarium(III) nitrate Sm(NO3)3 10361-83-8 336.38 yel-wh hyg solid 144

25 s EtOH 2369 Samarium(III) nitrate hexahydrate Sm(NO3)3 ∙ 6H2O 13759-83-6 444.47 pale yel cry 78 s H2O, MeOH, ace 2370 Samarium(III) oxide Sm2O3 12060-58-1 348.72 yel-wh cub cry 2269 3780 7.6 2371 Samarium(III) sulfate octahydrate Sm2(SO4)3 ∙ 8H2O 13465-58-2 733.03 yel cry 2.93 2.6720 2372 Samarium(III) sulfide Sm2S3 12067-22-0 396.92 gray-brn cub cry 1720 5.87 2373 Samarium(III) telluride Sm2Te3 12040-00-5 683.52 orth cry 7.31 2374 Scandium Sc 7440-20-2 44.956 silv metal; hex 1541 2836 2.99 2375 Scandium boride ScB2 12007-34-0 66.578 refrac solid 2250 3.17 2376 Scandium bromide ScBr3 13465-59-3 284.668 wh hyg cry 969 9.33 s H2O 2377 Scandium chloride ScCl3 10361-84-9 151.315 wh hyg cry 967 2.4 s H2O; i EtOH 2378 Scandium fluoride ScF3 13709-47-2 101.951 wh powder 1552 sl H2O 2379 Scandium hydroxide Sc(OH)3 17674-34-9 95.978 col amorp solid i H2O; s dil acid 2380 Scandium iodide ScI3 14474-33-0 425.669 hyg yel cry 953 subl s H2O, EtOH, CCD 2381 Scandium nitrate Sc(NO3)3 13465-60-6 230.971 wh cry 169

25 s EtOH 2382 Scandium oxide Sc2O3 12060-08-1 137.910 wh cub cry 2489 3.864 s conc acid 2383 Scandium sulfate pentahydrate Sc2(SO4)3 ∙ 5H2O 15292-44-1 468.176 col cry dec 110 vs H2O 2384 Scandium sulfide Sc2S3 12166-29-9 186.107 yel orth cry 1775 2.91 2385 Scandium telluride Sc2Te3 12166-44-8 472.71 blk hex cry 5.29 2386 Selenium (gray) Se 7782-49-2 78.96 gray metallic cry;

hex 220.8 685 4.809 i H2O, CS2

2387 Selenium (α form) Se 7782-49-2 78.96 red monocl cry trans gray Se >120

685 4.39 i H2O, EtOH; sl eth

2388 Selenium (vitreous) Se 7782-49-2 78.96 blk amorp solid trans gray Se 180

685 4.28 i H2O; sl CS2

2389 Selenic acid H2SeO4 7783-08-6 144.97 wh hyg solid 58 260 dec 2.95 vs H2O; reac EtOH 2390 Pentafluoroorthoselenic acid HOSeF5 38989-47-8 190.96 col solid 38 47 2391 Selenous acid H2SeO3 7783-00-8 128.97 wh hyg cry 70 dec 3.0 vs H2O; s EtOH 2392 Selenium dioxide SeO2 7446-08-4 110.96 wh tetr needles or

powder 340 tp 315 sp 3.95 26422 s EtOH, MeOH; sl

ace 2393 Selenium trioxide SeO3 13768-86-0 126.96 wh tetr cry; hyg 118 subl 3.44 s H2O, os

2394 Selenium bromide Se2Br2 7789-52-8 317.73 red liq 5 225 dec 3.60 reac H2O; s CS2, chl

2395 Selenium chloride Se2Cl2 10025-68-0 228.83 yel-brn oily liq -85 127 dec 2.774 reac H2O; s CS2, bz, ctc, chl

2396 Selenium tetrabromide SeBr4 7789-65-3 398.58 oran-red cry 123 reac H2O; s CS2, chl

2397 Selenium tetrachloride SeCl4 10026-03-6 220.77 wh-yel cry 305 tp 191.4 sp 2.6 reac H2O 2398 Selenium tetrafluoride SeF4 13465-66-2 154.95 col liq -9.5 101.6 2.75 reac H2O; vs EtOH,

eth 2399 Selenium hexafluoride SeF6 7783-79-1 192.95 col gas -34.6 tp -46.6 sp 7.887 g/L i H2O 2400 Selenium chloride pentafluoride SeF5Cl 34979-62-9 209.41 col gas -19 4.5 2401 Selenium oxybromide SeOBr2 7789-51-7 254.77 red-yel solid 41.6 220 dec 3.38 reac H2O; s CS2, bz,

ctc 2402 Selenium oxychloride SeOCl2 7791-23-3 165.87 col or yel liq 8.5 177 2.44 reac H2O; s ctc, chl,

bz, tol 2403 Selenium oxyfluoride SeOF2 7783-43-9 132.96 col liq 15 125 2.8 reac H2O 2404 Selenium oxytetrafluoride SeOF4 53319-44-1 170.95 unstab col liq 12 65 2405 Selenium dioxydifluoride SeO2F2 14984-81-7 148.96 col gas -99.5 -8.4 6.089 g/L reac H2O 2406 Selenium monosulfide SeS 7446-34-6 111.03 2407 Selenium disulfide SeS2 7488-56-4 143.09 red-yel cry 100 i H2O; s acid 2408 Selenium sulfide (Se2S6) Se2S6 75926-26-0 350.31 oran needles 121.5 2.44 s CS2; sl bz 2409 Selenium sulfide (Se4S4) Se4S4 75926-28-2 444.10 red cry 113 dec 3.29 s bz; sl CS2 2410 Selenium sulfide (Se6S2) Se6S2 75926-30-6 537.89 oran cry 121.5 s CS2 2411 Silicon Si 7440-21-3 28.085 gray cry or brn

amorp solid 1414 3265 2.3296 i H2O, acid; s alk

2412 Silane SiH4 7803-62-5 32.118 col gas; flam -185 -111.9 1.313 g/L reac H2O; i EtOH, bz

2413 Disilane Si2H6 1590-87-0 62.219 col gas; flam -129.4 -14.8 2.543 g/L reac H2O, ctc, chl; s EtOH, bz

2414 Trisilane Si3H8 7783-26-8 92.321 flam col liq -117.4 52.9 0.739 reac H2O 2415 Tetrasilane Si4H10 7783-29-1 122.421 col liq; flam -89.9 108.1 0.792 reac H2O 2416 2-Silyltrisilane Si4H10 13597-87-0 122.421 col liq -99.4 101.7 0.792 reac H2O 2417 Cyclopentasilane Si5H10 289-22-5 150.507 col liq -10.5 194.3 0.963 reac H2O 2418 Pentasilane Si5H12 14868-53-2 152.523 col liq -72.8 153.2 0.827 reac H2O 2419 2-Silyltetrasilane Si5H12 14868-54-3 152.523 col liq -109.9 146.2 0.820 reac H2O 2420 2,2-Disilyltrisilane Si5H12 15947-57-6 152.523 col liq -57.8 134.3 0.815 reac H2O 2421 Cyclohexasilane Si6H12 291-59-8 180.608 col liq 16.5 226 reac H2O 2422 Hexasilane Si6H14 14693-61-9 182.624 col liq -44.7 193.6 0.847 reac H2O 2423 2-Silylpentasilane Si6H14 14868-55-4 182.624 col liq -78.4 185.2 0.840 2424 3-Silylpentasilane Si6H14 52988-75-7 182.624 col liq -69 179.5 0.843 reac H2O 2425 Heptasilane Si7H16 14693-65-3 212.726 col liq -30.1 226.8 0.859 reac H2O 2426 Bromosilane SiH3Br 13465-73-1 111.014 col gas -94 1.9 4.538 g/L 2427 Dibromosilane SiH2Br2 13768-94-0 189.910 liq -70.1 66 2428 Tribromosilane SiHBr3 7789-57-3 268.806 flam liq -73 109 2.7 reac H2O 2429 Tetrabromosilane SiBr4 7789-66-4 347.702 col fuming liq 5.39 154 2.8 reac H2O 2430 Bromotrichlorosilane SiBrCl3 13465-74-2 214.349 col liq -62 80.3 1.826 reac H2O 2431 Dibromodichlorosilane SiBr2Cl2 13465-75-3 258.800 col liq -45.5 104 2.172 reac H2O 2432 Tribromochlorosilane SiBr3Cl 13465-76-4 303.251 col liq -20.8 127 2.497 reac H2O 2433 Hexabromosilane Si2Br6 13517-13-0 535.595 col cry 95 265 2434 Octabromotrisilane Si3Br8 54804-32-9 723.489 col liq 46 2435 Chlorosilane SiH3Cl 13465-78-6 66.563 col gas -118 -30.4 2.721 g/L 2436 Dichlorosilane SiH2Cl2 4109-96-0 101.008 col gas; flam -122 8.3 4.129 g/L reac H2O 2437 Trichlorosilane SiHCl3 10025-78-2 135.453 fuming liq -128.2 33 1.331 reac H2O 2438 Tetrachlorosilane SiCl4 10026-04-7 169.898 col fuming liq -68.74 57.65 1.5 reac H2O 2439 Chlorotrifluorosilane SiClF3 14049-36-6 120.534 col gas -138 -70.0 4.927 g/L reac H2O 2440 Dichlorodifluorosilane SiCl2F2 18356-71-3 136.989 col gas -44 -32 5.599 g/L reac H2O 2441 Trichlorofluorosilane SiCl3F 14965-52-7 153.443 col gas 12.25 6.272 g/L 2442 Trichloroiodosilane SiCl3I 13465-85-5 261.349 col liq -60 113.5 reac H2O 2443 Hexachlorodisilane Si2Cl6 13465-77-5 268.889 col liq 2.5 146 reac H2O 2444 Octachlorotrisilane Si3Cl8 13596-23-1 367.881 col liq -67 216 2445 Fluorosilane SiH3F 13537-33-2 50.108 col gas -98.6 2.048 g/L 2446 Difluorosilane SiH2F2 13824-36-7 68.099 col gas -122 -77.8 2.783 g/L 2447 Trifluorosilane SiHF3 13465-71-9 86.089 col gas -131 -95 3.519 g/L 2448 Tetrafluorosilane SiF4 7783-61-1 104.080 col gas -90.2 -86 4.254 g/L reac H2O 2449 Hexafluorodisilane Si2F6 13830-68-7 170.161 col gas -18.7 tp @

780 mmHg -19.1 sp reac H2O

2450 Octafluorotrisilane Si3F8 14521-14-3 236.244 col liq -1.2 42 2451 Decafluorotetrasilane Si4F10 14521-15-4 302.326 col cry 68 85.1

2453 Diiodosilane SiH2I2 13760-02-6 283.911 col liq -1 150 2454 Triiodosilane SiHI3 13465-72-0 409.807 liq 8 220 dec 2455 Tetraiodosilane SiI4 13465-84-4 535.704 wh powder 120.5 287.35 4.1 2456 Hexaiododisilane Si2I6 13510-43-5 817.598 pale yel cry 250 2457 Disiloxane (SiH3)2O 13597-73-4 78.218 gas -144 -15.2 3.197 g/L 2458 Hexachlorodisiloxane (SiCl3)2O 14986-21-1 284.888 liq -28 137 2459 Methylsilane SiH3CH3 992-94-9 46.145 col gas -156.5 -57.5 2460 Metasilicic acid H2SiO3 7699-41-4 78.100 wh amorp powder i H2O; s HF 2461 Orthosilicic acid H4SiO4 10193-36-9 96.116 exists only in soln 2462 Fluorosilicic acid H2SiF6 16961-83-4 144.092 stab only in aq

soln s H2O

2463 Silicon carbide (hexagonal) SiC 409-21-2 40.097 hard grn-black hex cry

2830 3.16 i H2O, EtOH

2464 Silicon nitride (Si3N4) Si3N4 12033-89-5 140.284 gray refrac solid; hex

1900 3.17

2465 Silicon monoxide SiO 10097-28-6 44.085 blk cub cry, stable >1200

2.18

2466 Silicon dioxide (α-quartz) SiO2 14808-60-7 60.085 col hex cry trans to beta quartz 573

2950 2.648 i H2O, acid; s HF

2467 Silicon dioxide (β-quartz) SiO2 14808-60-7 60.085 col hex cry trans to tridymite 867

2950 2.533600 i H2O, acid; s HF

2468 Silicon dioxide (tridymite) SiO2 15468-32-3 60.085 col hex cry trans cristobalite 1470

2950 2.265 i H2O, acid; s HF

2469 Silicon dioxide (cristobalite) SiO2 14464-46-1 60.085 col hex cry 1722 2950 2.334 i H2O, acid; s HF 2470 Silicon dioxide (vitreous) SiO2 60676-86-0 60.085 col amorp solid 1713 2950 2.196 i H2O, acid; s HF 2471 Silicon monosulfide SiS 12504-41-5 60.151 yel-red hyg

powder 1090 940 1.85 reac H2O

2472 Silicon disulfide SiS2 13759-10-9 92.216 wh rhomb cry 1090 subl 2.04 reac H2O, EtOH; i bz

2473 Silicon tetraacetate Si(C2H3O2)4 562-90-3 264.262 wh hyg cry 110 reac H2O; s ace, bz 2474 Silicon tetraboride SiB4 12007-81-7 71.330 gray refrac solid 1870 dec 2.4 2475 Silicotungstic acid H4SiO4 ∙ (W3O9)4 12520-88-6 2878.17 hyg yel cry vs H2O, EtOH 2476 Silver Ag 7440-22-4 107.868 silv metal; cub 961.78 2162 10.5 2477 Silver azide AgN3 13863-88-2 149.888 orth cry; exp exp ≈250 4.9 0.00081

2478 Silver subfluoride Ag2F 1302-01-8 234.734 yel hex cry 100 dec 8.6 reac H2O 2479 Silver(I) acetate AgC2H3O2 563-63-3 166.912 wh needles or

powder dec 3.26 1.0420

2480 Silver(I) acetylide Ag2C2 7659-31-6 239.757 wh powder; exp 2481 Silver(I) acetylide (AgC2H) AgC2H 13092-75-6 132.897 wh powder; exp 2482 Silver(I) arsenate Ag3AsO4 13510-44-6 462.524 red cub cry dec 6.657 0.00085 s NH4OH 2483 Silver(I) benzoate Ag(C6H5CO2) 532-31-0 228.982 powder 30

2484 Silver(I) bromate AgBrO3 7783-89-3 235.770 wh tetr cry 360 dec 5.21 0.193 25

2485 Silver(I) bromide AgBr 7785-23-1 187.772 yel cub cry 430 1502 6.47 0.00001425 i H2O, acid, EtOH 2486 Silver(I) carbonate Ag2CO3 534-16-7 275.745 yel monocl cry 218 6.077 0.0036

20 s acid 2487 Silver(I) chlorate AgClO3 7783-92-8 191.319 wh tetr cry 230 270 dec 4.430 17.6

25 sl EtOH 2488 Silver(I) chloride AgCl 7783-90-6 143.321 wh cub cry 455 1547 5.56 0.0001925

2489 Silver(I) chlorite AgClO2 7783-91-7 175.320 yel cry 105 exp 0.55 25

2490 Silver(I) chromate Ag2CrO4 7784-01-2 331.730 brn-red monocl cry

5.625 0.0000140

2491 Silver(I) citrate Ag3C6H5O7 126-45-4 512.705 wh cry powder i H2O; s HNO3 2492 Silver(I) cyanide AgCN 506-64-9 133.886 wh-gray hex cry 320 dec 3.95 0.0000011 i EtOH, dil acid 2493 Silver(I) dichromate Ag2Cr2O7 7784-02-3 431.724 red cry 4.770 sl H2O 2494 Silver(I) diethyldithiocarbamate Ag(C2H5)2NCS2 1470-61-7 256.138 powder 173 s py 2495 Silver(I) fluoride AgF 7775-41-9 126.866 yel-brn cub cry;

hyg 435 1159 5.852 17220

2496 Silver(I) hexafluoroantimonate AgSbF6 26042-64-8 343.618 powder 2497 Silver(I) hexafluoroarsenate AgAsF6 12005-82-2 296.780 powder 2498 Silver(I) hexafluorophosphate AgPF6 26042-63-7 252.832 powder 102 dec 2499 Silver(I) hydrogen fluoride AgHF2 12249-52-4 146.873 hyg cry dec 2500 Silver(I) iodate AgIO3 7783-97-3 282.770 wh orth cry >200 5.53 0.053

2501 Silver(I) iodide AgI 7783-96-2 234.772 yel powder; hex 558 1506 5.68 0.000003 i acid 2502 Silver(I) lactate monohydrate AgC3H5O3 ∙ H2O 128-00-7 214.954 gray cry powder sl H2O, EtOH 2503 Silver(I) metaphosphate AgPO3 13465-96-8 186.840 grn glass 490 6.37 i H2O; s HNO3,

NH4OH 2504 Silver(I) molybdate Ag2MoO4 13765-74-7 375.67 yel cub cry 483 6.18 sl H2O 2505 Silver(I) nitrate AgNO3 7761-88-8 169.873 col rhomb cry 210 440 dec 4.35 234

25 sl EtOH, ace 2506 Silver(I) nitrite AgNO2 7783-99-5 153.874 yel needles 140 dec 4.453 0.415

2508 Silver(I) oxide Ag2O 20667-12-3 231.735 brn-blk cub cry ≈200 dec 7.2 0.0025 i EtOH; s acid, alk 2509 Silver(I) perchlorate AgClO4 7783-93-9 207.319 col cub cry; hyg 486 dec 2.806 558

25 s bz, py, os 2510 Silver(I) perchlorate monohydrate AgClO4 ∙ H2O 14242-05-8 225.334 hyg wh cry 43 dec 55825 2511 Silver(I) permanganate AgMnO4 7783-98-4 226.804 viol monocl cry dec 4.49 0.91

18 reac EtOH 2512 Silver(I) phosphate Ag3PO4 7784-09-0 418.576 yel powder 849 6.37 0.0064 sl dil acid 2513 Silver(I) picrate monohydrate AgC6H2N3O7 ∙ H2O 146-84-9 353.979 yel cry sl H2O, EtOH; i chl,

eth 2514 Silver(I) selenate Ag2SeO4 7784-07-8 358.69 orth cry 5.72 0.118

2515 Silver(I) selenide Ag2Se 1302-09-6 294.70 gray hex needles 880 8.216 i H2O 2516 Silver(I) selenite Ag2SeO3 7784-05-6 342.69 needles 530 >550 dec 5.930 sl H2O; s acid 2517 Silver(I) sulfate Ag2SO4 10294-26-5 311.799 col cry or powder 660 5.45 0.84

2518 Silver(I) sulfide Ag2S 21548-73-2 247.801 gray-blk orth powder

825 (high press.)

7.23 i H2O; s acid

2519 Silver(I) sulfite Ag2SO3 13465-98-0 295.799 wh cry 100 dec 0.00046 20 s acid, NH4OH

2520 Silver(I) telluride Ag2Te 12002-99-2 343.34 blk orth cry 955 8.4 2521 Silver(I) tetraiodomercurate(II) Ag2HgI4 7784-03-4 923.94 yel tetr cry trans to red

cub ≈40 6.1 i H2O, dil acid

2522 Silver(I) thiocyanate AgSCN 1701-93-5 165.951 wh powder dec i H2O 2523 Silver(I) thiosulfate Ag2S2O3 23149-52-2 327.864 wh cry dec sl H2O; s NH4OH 2524 Silver(II) oxide AgO 1301-96-8 123.867 gray powder;

monocl or cub >100 dec 7.5 0.002725 s alk; reac acid

2525 Silver(I) tungstate Ag2WO4 13465-93-5 463.57 yel cry 620 0.015 s HNO3, NH4OH 2526 Silver(II) fluoride AgF2 7783-95-1 145.865 wh or gray hyg cry 690 4.58 reac H2O 2527 Silver(II) oxide (Ag2O2) Ag2O2 25455-73-6 247.735 gray-blk cub cry >100 7.44 i H2O; s acid,

NH4OH 2528 Sodium Na 7440-23-5 22.990 soft silv met; cub 97.794 882.940 0.97 reac H2O 2529 Sodium acetate NaC2H3O2 127-09-3 82.034 col cry 328.2 1.528 50.4

2530 Sodium acetate trihydrate NaC2H3O2 ∙ 3H2O 6131-90-4 136.079 col cry 58 dec 1.45 50.425 sl EtOH 2531 Sodium aluminate NaAlO2 1302-42-7 81.971 wh orth cry; hyg 1650 4.63 vs H2O; i EtOH 2532 Sodium aluminum hydride NaAlH4 13770-96-2 54.004 wh hyg solid 174 dec 1.24 i eth; s thf 2533 Sodium aluminum sulfate

dodecahydrate NaAl(SO4)2 ∙ 12H2O 10102-71-3 458.281 col cry ≈60 1.61 39.720 i EtOH

2534 Sodium amide NaNH2 7782-92-5 39.013 wh-grn orth cry 210 500 dec 1.39 reac H2O 2535 Sodium ammonium phosphate

tetrahydrate NaNH4HPO4 ∙ 4H2O 13011-54-6 209.069 monocl cry ≈80 dec 1.54 s H2O; i EtOH

2536 Sodium arsenate dodecahydrate Na3AsO4 ∙ 12H2O 7778-43-0 424.072 col monocl prism 86 dec s H2O; sl EtOH; i eth

2537 Sodium arsenite NaAsO2 7784-46-5 129.911 wh-gray hyg powder

1.87 vs H2O; i EtOH

2538 Sodium azide NaN3 26628-22-8 65.010 col hex cry 300 dec 1.846 40.8 20 sl EtOH; i eth

2539 Sodium borohydride NaBH4 16940-66-2 37.833 wh cub cry; hyg ≈400 dec 1.07 55 20 reac EtOH

2540 Sodium bromate NaBrO3 7789-38-0 150.892 col cub cry 381 3.34 39.4 25 i EtOH

2541 Sodium bromide NaBr 7647-15-6 102.894 wh cub cry 747 1390 3.200 94.625 s EtOH 2542 Sodium bromide dihydrate NaBr ∙ 2H2O 13466-08-5 138.925 wh cry 36 dec 2.18 94.625 sl EtOH 2543 Sodium carbonate Na2CO3 497-19-8 105.989 wh hyg powder 856 2.54 30.7

25 i EtOH 2544 Sodium carbonate monohydrate Na2CO3 ∙ H2O 5968-11-6 124.005 col orth cry 100 dec 2.25 30.725 i EtOH 2545 Sodium carbonate decahydrate Na2CO3 ∙ 10H2O 6132-02-1 286.142 col cry 34 dec 1.46 30.725 i EtOH 2546 Sodium chlorate NaClO3 7775-09-9 106.441 col cub cry 248 dec 630 2.5 100

25 sl EtOH 2547 Sodium chloride NaCl 7647-14-5 58.443 col cub cry 800.7 1465 2.17 36.025 sl EtOH 2548 Sodium chlorite NaClO2 7758-19-2 90.442 wh hyg cry ≈180 dec 64

2549 Sodium chromate Na2CrO4 7775-11-3 161.974 yel orth cry 794 2.72 87.6 25 sl EtOH

2550 Sodium chromate tetrahydrate Na2CrO4 ∙ 4H2O 10034-82-9 234.035 yel hyg cry dec 87.625 sl EtOH 2551 Sodium citrate dihydrate Na3C6H5O7 ∙ 2H2O 6132-04-3 294.099 wh cry 150 dec vs H2O; i EtOH, eth 2552 Sodium citrate pentahydrate Na3C6H5O7 ∙ 5H2O 6858-44-2 348.145 hyg col cry dec 150 1.86 9225 vs H2O; sl EtOH; i

eth 2553 Sodium cyanate NaCNO 917-61-3 65.007 col needles 550 1.89 s H2O; sl EtOH; i

eth 2554 Sodium cyanide NaCN 143-33-9 49.008 wh cub cry; hyg 562 1.6 58.220 sl EtOH 2555 Sodium cyanoborohydride NaBH3(CN) 25895-60-7 62.843 wh hyg powder 240 dec 1.12 vs H2O; s thf; sl

EtOH; i bz, eth 2556 Sodium dichromate Na2Cr2O7 10588-01-9 261.968 red hyg cry 357 400 dec 187

2557 Sodium dichromate dihydrate Na2Cr2O7 ∙ 2H2O 7789-12-0 297.999 oran-red monocl cry

85 dec 2.35 vs H2O; S HOAc

2558 Sodium dihydrogen phosphate NaH2PO4 7558-80-7 119.977 col monocl cry 200 dec 94.9 25

2559 Sodium dihydrogen phosphate monohydrate

NaH2PO4 ∙ H2O 10049-21-5 137.993 wh hyg cry 100 dec 94.925 i EtOH

2560 Sodium dihydrogen phosphate dihydrate

NaH2PO4 ∙ 2H2O 13472-35-0 156.008 col orth cry 60 dec 1.91 94.925 i EtOH

2561 Sodium dihydrogen

Na2H2P2O6 ∙ 6H2O 7782-95-8 314.031 monocl plates 110 dec 1.849 2.025 i EtOH

2562 Sodium dihydrogen pyrophosphate Na2H2P2O7 7758-16-9 221.939 wh powder 220 dec ≈1.9 s H2O 2563 Sodium dithionate Na2S2O4 7775-14-6 174.108 gray-wh powder 52 dec 24.1

20 sl EtOH 2564 Sodium dithionate dihydrate Na2S2O6 ∙ 2H2O 7631-94-9* 242.137 col orth cry 110 dec 2.19 15.120 i EtOH 2565 Sodium ethanolate NaC2H5O 141-52-6 68.050 wh-yel hyg

powder 260 dec reac H2O; s EtOH

2566 Sodium ferricyanide monohydrate Na3Fe(CN)6 ∙ H2O 14217-21-1* 298.933 red hyg cry s H2O; i EtOH 2567 Sodium ferrocyanide decahydrate Na4Fe(CN)6 ∙ 10H2O 13601-19-9 484.061 yel monocl cry ≈50 dec 1.46 2020 i os 2568 Sodium fluoride NaF 7681-49-4 41.988 col cub or tetr cry 996 1704 2.78 4.1325 i EtOH 2569 Sodium fluorophosphate Na2PO3F 10163-15-2 143.950 powder 2570 Sodium formate NaCHO2 141-53-7 68.008 wh hyg cry 257.3 dec 1.92 94.9

25 sl EtOH 2571 Sodium germanate Na2GeO3 12025-19-3 166.62 wh monocl hyg

cry 1083 3.31

2572 Sodium gold cyanide NaAu(CN)2 15280-09-8 271.991 wh-yel cry pow s H2O, NH4OH 2573 Sodium gold thiosulfate dihydrate Na3Au(S2O3)2 ∙ 5H2O 10233-88-2 526.223 wh needles or

prisms dec 150 3.09 vs H2O; i EtOH

2574 Sodium hexabromoplatinate(IV) hexahydrate

Na2PtBr6 ∙ 6H2O 39277-13-9 828.579 cry

2575 Sodium hexachloroiridate(IV) hexahydrate

Na2IrCl6 ∙ 6H2O 19567-78-3 559.006 cry 600 dec

2576 Sodium hexachloroplatinate(IV) Na2PtCl6 16923-58-3 453.782 yel hyg cry 53 16 s EtOH

2577 Sodium hexachloroplatinate(IV) hexahydrate

Na2PtCl6 ∙ 6H2O 16923-58-3 561.873 yel cry 110 dec 2.50 5316 s EtOH; i eth

2578 Sodium hexafluoroaluminate Na3AlF6 13775-53-6 209.941 col monocl cry; trans cub 560

1013 2.97 i H2O

2579 Sodium hexafluoroantimonate NaSbF6 16925-25-0 258.740 wh cub cry 3.375 129 20 s EtOH, ace

2580 Sodium hexafluorophosphate monohydrate

NaPF6 ∙ H2O 20644-15-9 185.969 col orth cry 2.369 1030 s EtOH, MeOH, ace

2581 Sodium hexafluorosilicate Na2SiF6 16893-85-9 188.056 wh hex cry 847 2.7 0.67 20 i EtOH

2582 Sodium hexanitrocobaltate(III) Na3Co(NO2)6 14649-73-1 403.935 yel-brn cry powder vs H2O; sl EtOH 2583 Sodium hydride NaH 7646-69-7 23.998 silv cub cry; flam 425 dec 1.39 reac H2O, EtOH 2584 Sodium hydrogen arsenate Na2HAsO4 7778-43-0 185.908 wh powder ≈195 dec 51

20 sl EtOH 2585 Sodium hydrogen arsenate

heptahydrate Na2HAsO4 ∙ 7H2O 10048-95-0 312.014 wh monocl cry ≈50 dec 1.87 5120 sl EtOH

2586 Sodium hydrogen carbonate NaHCO3 144-55-8 84.007 wh monocl cry ≈50 dec 2.20 10.3 25 i EtOH

2587 Sodium hydrogen fluoride NaHF2 1333-83-1 61.995 wh hex cry >160 dec 2.08 3.25 20

2588 Sodium hydrogen phosphate Na2HPO4 7558-79-4 141.959 wh hyg powder 1.7 11.8 25

2589 Sodium hydrogen phosphate heptahydrate

Na2HPO4 ∙ 7H2O 7782-85-6 268.066 col cry ≈1.7 11.825 i EtOH

2590 Sodium hydrogen phosphate dodecahydrate

Na2HPO4 ∙ 12H2O 10039-32-4 358.143 col cry ≈35 dec ≈1.5 11.825 i EtOH

2591 Sodium hydrogen sulfate NaHSO4 7681-38-1 120.061 wh hyg cry ≈315 2.43 28.5 25

2592 Sodium hydrogen sulfate monohydrate

NaHSO4 ∙ H2O 10034-88-5 138.076 wh monocl cry 2.10 28.525 reac EtOH

2593 Sodium hydrogen sulfide NaHS 16721-80-5 56.063 col rhomb cry 350 1.79 s H2O, EtOh, eth 2594 Sodium hydrogen sulfide dihydrate NaHS ∙ 2H2O 16721-80-5 92.094 yel hyg needles 55 dec vs H2O, EtOH, eth 2595 Sodium hydrogen sulfite NaHSO3 7631-90-5 104.061 wh cry 1.48 s H2O; sl EtOH 2596 Sodium hydroxide NaOH 1310-73-2 39.997 wh orth cry; hyg 323 1388 2.13 10025 s EtOH, MeOH 2597 Sodium hypochlorite NaClO 7681-52-9 74.442 stab in aq soln anh form exp 79.925

2598 Sodium hypochlorite pentahydrate NaOCl ∙ 5H2O 10022-70-5 164.518 pale grn orth cry 18 1.6 s H2O 2599 Sodium iodate NaIO3 7681-55-2 197.892 wh orth cry 422 4.28 9.47

25 i EtOH 2600 Sodium iodide NaI 7681-82-5 149.894 wh cub cry; hyg 661 1304 3.67 18425 s EtOH, ace 2601 Sodium iodide dihydrate NaI ∙ 2H2O 13517-06-1 185.925 hyg col monocl

cry 69 dec 2.45 3180 vs H2O

2602 Sodium bismuthate NaBiO3 12232-99-4 279.968 yel-brn hyg cry i cold H2O, reac acid

2603 Sodium metabisulfite Na2S2O5 7681-57-4 190.107 wh cry 66.7 25 sl EtOH

2604 Sodium metaborate NaBO2 7775-19-1 65.800 wh hex cry 966 1434 2.46 s H2O 2605 Sodium metasilicate Na2SiO3 6834-92-0 122.064 wh amorp solid;

hyg 1089 2.61 s cold H2O; reac

hot H2O; i EtOH 2606 Sodium metasilicate pentahydrate Na2SiO3 ∙ 5H2O 13517-24-3 212.140 wh pow 72 dec s H2O 2607 Sodium molybdate Na2MoO4 7631-95-0 205.92 col cub cry 687 ≈3.5 65.0

2608 Sodium molybdate dihydrate Na2MoO4 ∙ 2H2O 10102-40-6 241.95 cry powder 100 dec ≈3.5 65.025 2609 Sodium molybdophosphate Na3PO4 ∙ 12MoO3 1313-30-0 1891.20 hyg solid 2.83 vs H2O, EtOH 2610 Sodium niobate NaNbO3 12034-09-2 163.894 rhom cry 1422 4.55 i H2O 2611 Sodium nitrate NaNO3 7631-99-4 84.995 col hex cry; hyg 306.5 2.261 91.2

25 sl EtOH, MeOH 2612 Sodium nitrite NaNO2 7632-00-0 68.996 wh orth cry; hyg 284 >320 dec 2.17 84.8

25 sl EtOH; reac acid 2613 Sodium nitroferricyanide dihydrate Na2[Fe(CN)5NO] ∙ 2H2O 13755-38-9 297.949 red cry 1.72 4016 sl EtOH 2614 Sodium orthovanadate Na3VO4 13721-39-6 183.909 col hex prisms 860 s H2O; i EtOH 2615 Sodium oxalate Na2C2O4 62-76-0 133.999 wh powder ≈250 dec 2.34 3.61

2616 Sodium oxide Na2O 1313-59-3 61.979 wh amorp powder 1134 2.27 reac H2O 2617 Sodium perborate tetrahydrate NaBO3 ∙ 4H2O 7632-04-4 153.861 wh cry 60 dec reac H2O 2618 Sodium perchlorate NaClO4 7601-89-0 122.441 wh orth cry; hyg 482 dec 2.52 205

2619 Sodium perchlorate monohydrate NaClO4 ∙ H2O 7791-07-3 140.456 wh hyg cry ≈130 dec 2.02 20525 2620 Sodium periodate NaIO4 7790-28-5 213.892 wh tetr cry ≈300 dec 3.86 14.4

25 s acid 2621 Sodium periodate trihydrate NaIO4 ∙ 3H2O 13472-31-6 267.938 wh hex cry 175 dec 3.22 14.425 2622 Sodium permanganate trihydrate NaMnO4 ∙ 3H2O 10101-50-5* 195.972 red-blk hyg cry 170 dec 2.47 14420 reac EtOH 2623 Sodium peroxide Na2O2 1313-60-6 77.979 yel hyg powder 675 2.805 reac H2O 2624 Sodium perrhenate NaReO4 13472-33-8 273.195 cry 300 5.39 2625 Sodium persulfate Na2S2O8 7775-27-1 238.105 wh hyg cry vs H2O; reac EtOH 2626 Sodium phosphate Na3PO4 7601-54-9 163.940 col cry 1583 2.54 14.5

25 s H2O 2627 Sodium phosphate dodecahydrate Na3PO4 ∙ 12H2O 10101-89-0 380.124 col hex cry ≈75 1.62 14.425 i EtOH 2628 Sodium phosphate, chlorinated Na3PO4 ∙ NaOCl 56802-99-4 238.383 wh cry 2525 2629 Sodium phosphide Na3P 12058-85-4 99.943 red solid >650 reac H2O 2630 Sodium phosphinate NaH2PO2 7681-53-0 87.979 wh cry 100

2631 Sodium phosphinate monohydrate NaH2PO2 ∙ H2O 10039-56-2 105.994 col hyg cry 310 dec 10025 s EtOH 2632 Sodium phosphonate pentahydrate Na2HPO3 ∙ 5H2O 13517-23-2 216.036 wh hex plates dec 200 42920 vs H2O; i EtOH 2633 Sodium pyrophosphate Na4P2O7 7722-88-5 265.902 col cry 988 2.53 7.09

2634 Sodium selenate Na2SeO4 13410-01-0 188.94 col orth cry 58.5 25

2635 Sodium selenate decahydrate Na2SeO4 ∙ 10H2O 10102-23-5 369.09 wh cry 1.61 58.525 2636 Sodium selenide Na2Se 1313-85-5 124.94 amorp solid >875 2.62 reac H2O 2637 Sodium selenite Na2SeO3 10102-18-8 172.94 wh tetr cry 89.8

25 i EtOH 2638 Sodium selenite pentahydrate Na2SeO3 ∙ 5H2O 26970-82-1 184.054 wh tetr cry dec s H2O; i EtOH 2639 Sodium stannate trihydrate Na2SnO3 ∙ 3H2O 12209-98-2 266.734 col hex cry dec 140 6115 vs H2O; i EtOH, ace 2640 Sodium stearate NaC18H35O2 822-16-2 306.460 wh powder sl H2O, EtOH; vs

hot H2O 2641 Sodium succinate hexahydrate Na2C4H4O4 ∙ 6H2O 150-90-3 270.144 cry powder 120 dec 20 i EtOH 2642 Sodium sulfate Na2SO4 7757-82-6 142.043 wh orth cry or

powder 884 2.7 28.125 i EtOH

2643 Sodium sulfate heptahydrate Na2SO4 ∙ 7H2O 13472-39-4 204.152 wh cry dec vs H2O 2644 Sodium sulfate decahydrate Na2SO4 ∙ 10H2O 7727-73-3 322.196 col monocl cry 32 dec 1.46 28.125 i EtOH 2645 Sodium sulfide Na2S 1313-82-2 78.045 wh cub cry; hyg 1172 1.856 20.6

25 sl EtOH; i eth 2646 Sodium sulfide pentahydrate Na2S ∙ 5H2O 1313-83-3 168.121 col orth cry 120 dec 1.58 20.625 s EtOH; i eth 2647 Sodium sulfide nonahydrate Na2S ∙ 9H2O 1313-84-4 240.183 wh-yel hyg cry ≈50 dec 1.43 20.625 sl EtOH; i eth 2648 Sodium sulfite Na2SO3 7757-83-7 126.043 wh hex cry 911 2.63 30.7

25 i EtOH 2649 Sodium sulfite heptahydrate Na2SO3 ∙ 7H2O 10102-15-5 252.150 wh monocl cry;

unstab 1.56 30.725 sl EtOH

2650 Sodium superoxide NaO2 12034-12-7 54.989 yel cub cry 552 2.2 reac H2O 2651 Sodium tartrate dihydrate Na2C4H4O6 ∙ 2H2O 6106-24-7 230.082 1.545 s H2O; i EtOH 2652 Sodium tellurate Na2TeO4 10101-83-4 237.58 wh powder 0.8 2653 Sodium tellurite Na2TeO3 10102-20-2 221.58 wh rhomb prisms sl H2O 2654 Sodium tetraborate Na2B4O7 1330-43-4 201.220 col gl solid; hyg 743 1575 2.4 3.17

25 sl MeOH 2655 Sodium tetraborate tetrahydrate Na2B4O7 ∙ 4H2O 12045-87-3 273.281 wh monocl cry 1.95 3.1725 2656 Sodium tetraborate pentahydrate Na2B4O7 ∙ 5H2O 12045-88-4 291.296 hex cry dec 1.88 3.1725 2657 Sodium tetraborate decahydrate Na2B4O7 ∙ 10H2O 1303-96-4 381.373 wh monocl cry 75 dec 1.73 3.1725 i EtOH 2658 Sodium tetrachloroaluminate NaAlCl4 7784-16-9 191.784 orth cry 2.01 s H2O 2659 Sodium tetrachloroaurate(III)

dihydrate NaAuCl4 ∙ 2H2O 13874-02-7 397.800 oran-yel rhom cry 100 dec 15010 s EtOH, eth

2660 Sodium tetrachloropalladate(II) trihydrate

Na2PdCl4 ∙ 3H2O 13820-53-6 348.26 brn-red hyg cry vs H2O; s EtOH

2661 Sodium tetrachloroplatinate(II) tetrahydrate

Na2PtCl4 ∙ 4H2O 10026-00-3 454.938 red prisms 100 s H2O, EtOH

2662 Sodium tetrafluoroberyllate Na2BeF4 13871-27-7 130.986 orth cry 575 2.47 sl H2O 2663 Sodium tetrafluoroborate NaBF4 13755-29-8 109.795 wh orth prisms 384 2.47 108

20 sl EtOH 2664 Sodium thioantimonate

nonahydrate Na3SbS4 ∙ 9H2O 10101-91-4 481.127 yel cry dec 108 1.8 2820 i EtOH

2665 Sodium thiocyanate NaSCN 540-72-7 81.073 col hyg cry 287 15125

2666 Sodium thiophosphate dodecahydrate

Na3PO3S ∙ 12H2O 10101-88-9 396.190 hex hyg leaflets 60 vs hot H2O

2667 Sodium thiosulfate Na2S2O3 7772-98-7 158.108 col monocl cry 100 dec 1.69 76.4 25 i EtOH

2668 Sodium thiosulfate pentahydrate Na2S2O3 ∙ 5H2O 10102-17-7 248.184 col cry ≈50 dec 1.69 76.425 i EtOH 2669 Sodium trimetaphosphate Na3(PO3)3 7785-84-4 305.885 wh cry 2.49 22 2670 Sodium trimetaphosphate

hexahydrate Na3(PO3)3 ∙ 6H2O 7785-84-4 413.976 tricl-rhom hyg

prisms 53 1.786 22 i EtOH

2671 Sodium tripolyphosphate Na5P3O10 7758-29-4 367.864 wh hyg powder 622 20 25

2672 Sodium tungstate Na2WO4 13472-45-2 293.82 wh rhom cry 695 4.18 74.2 25

2673 Sodium tungstate dihydrate Na2WO4 ∙ 2H2O 10213-10-2 329.85 wh orth cry 100 dec 3.25 74.225 i EtOH 2674 Sodium uranate(VI) monohydrate Na2U2O7 ∙ H2O 13721-34-1 652.049 yel powder i H2O; s acid

2675 Sodium vanadate(V) NaVO3 13718-26-8 121.930 col monocl prisms 630 21 25

2676 Sodium vanadate(V) tetrahydrate NaVO3 ∙ 4H2O 13718-26-8 193.992 yel-wh cry powder 2125 2677 Strontium Sr 7440-24-6 87.62 silv-wh metal; cub 777 1377 2.64 reac H2O; s EtOH 2678 Strontium acetate Sr(C2H3O2)2 543-94-2 205.71 col hyg cry dec 2.1 40

25 vs H2O 2679 Strontium arsenite tetrahydrate Sr(AsO2)2 ∙ 4H2O 10378-48-0 373.52 wh powder sl H2O, EtOH; sol

dil acid 2680 Strontium bromate monohydrate Sr(BrO3)2 ∙ H2O 14519-18-7 361.44 yel hyg monocl

cry 120 dec 3.773 39.025

2681 Strontium bromide SrBr2 10476-81-0 247.43 wh tetr cry 657 4.216 107 25

2682 Strontium bromide hexahydrate SrBr2 ∙ 6H2O 7789-53-9 355.52 col hyg cry 88 dec 10725 s EtOH; i eth 2683 Strontium carbide SrC2 12071-29-3 111.64 blk tetr cry >1700 3.19 i H2O 2684 Strontium carbonate SrCO3 1633-05-2 147.63 wh orth cry; hyg 1494 3.785 0.00034

20 s dil acid 2685 Strontium chlorate Sr(ClO3)2 7791-10-8 254.52 col cry 120 dec 3.15 176

25 sl EtOH 2686 Strontium chloride SrCl2 10476-85-4 158.53 wh cub cry; hyg 874 1250 3.052 54.7

2687 Strontium chloride hexahydrate SrCl2 ∙ 6H2O 10025-70-4 266.62 col hyg cry 100 dec 1.96 54.725 s EtOH 2688 Strontium chromate SrCrO4 7789-06-2 203.61 yel monocl cry dec 3.9 0.106

20 s dil acid 2689 Strontium cyanide dihydrate Sr(CN)2 ∙ 4H2O 52870-08-3 211.72 wh hyg cry dec vs H2O 2690 Strontium ferrocyanide

pentadecahydrate SrFe(CN)6 ∙ 15H2O 14654-44-5 569.80 yel monocl cry 50

2691 Strontium fluoride SrF2 7783-48-4 125.62 wh cub cry or powder

1477 2460 4.24 0.02125 s dil acid

2692 Strontium formate Sr(CHO2)2 592-89-2 177.66 wh cry 71.9 2.693 9.1 0

2693 Strontium formate dihydrate Sr(CHO2)2 ∙ 2H2O 6160-34-5 213.69 col rhom cry 100 dec 2.25 9.137 i EtOH, eth 2694 Strontium hexaboride SrB6 12046-54-7 152.49 blk cub cry 2235 3.39 i H2O; s HNO3 2695 Strontium hydride SrH2 13598-33-9 89.64 orth cry 1050 3.26 reac H2O 2696 Strontium hydroxide Sr(OH)2 18480-07-4 121.64 col orth cry; hyg 535 710 dec 3.625 2.25

2697 Strontium iodate Sr(IO3)2 13470-01-4 437.43 tricl cry 5.045 0.165 25

2698 Strontium iodide SrI2 10476-86-5 341.43 wh hyg cry 538 1773 dec 4.55 177 25

2699 Strontium iodide hexahydrate SrI2 ∙ 6H2O 73796-25-5 449.52 wh-yel hex cry; hyg

120 dec 4.4 17725 s EtOH

2700 Strontium molybdate SrMoO4 13470-04-7 247.56 wh cry pow 1040 4.54 i H2O 2701 Strontium niobate SrNb2O6 12034-89-8 369.43 monocl cry 1225 5.11 i H2O 2702 Strontium nitrate Sr(NO3)2 10042-76-9 211.63 wh cub cry 570 2.99 80.2

25 sl EtOH, ace 2703 Strontium nitride Sr3N2 12033-82-8 290.87 refrac solid 1200 reac H2O; s HCl 2704 Strontium nitrite Sr(NO2)2 13470-06-9 179.63 wh-yel hyg

needles 240 dec 2.8 72.130 s H2O

2705 Strontium orthosilicate Sr2SiO4 13597-55-2 267.32 orth cry 4.5 2706 Strontium oxalate monohydrate SrC2O4 ∙ H2O 814-95-9 193.65 cry pow dec 150 0.0000520 sl dil acid 2707 Strontium oxide SrO 1314-11-0 103.62 col cub cry 2531 5.1 reac H2O 2708 Strontium perchlorate Sr(ClO4)2 13450-97-0 286.52 col hyg cry 306

25 s EtOH, MeOH 2709 Strontium permanganate trihydrate Sr(MnO4)2 ∙ 3H2O 14446-13-0 379.54 purp cub cry 175 dec 2.75 25018 2710 Strontium peroxide SrO2 1314-18-7 119.62 wh tetr cry; unstab 215 dec 4.78 reac H2O 2711 Strontium phosphate Sr3(PO4)2 7446-28-8 452.80 wh powder 0.000011

20 s acid 2712 Strontium selenate SrSeO4 7446-21-1 230.58 orth cry 4.25 0.115

20 s hot HCl 2713 Strontium selenide SrSe 1315-07-7 166.58 wh cub cry 1600 4.54 2714 Strontium silicide SrSi2 12138-28-2 143.79 silv-gray cub cry 1100 3.35 2715 Strontium sulfate SrSO4 7759-02-6 183.68 wh orth cry 1606 3.96 0.0135

25 i EtOH; sl acid 2716 Strontium sulfide SrS 1314-96-1 119.69 gray cub cry 2226 3.70 sl H2O; s acid 2717 Strontium sulfite SrSO3 13451-02-0 167.68 col cry dec 0.0015

25 s H2SO4, HCl 2718 Strontium telluride SrTe 12040-08-3 215.22 wh cub cry 4.83 2719 Strontium thiosulfate pentahydrate SrS2O3 ∙ 5H2O 15123-90-7 289.82 monocl needles 100 dec 2.17 36.325 i EtOH 2720 Strontium titanate SrTiO3 12060-59-2 183.49 wh cub cry 2080 5.1 i H2O 2721 Strontium tungstate SrWO4 13451-05-3 335.46 col tetr cry dec 6.187 0.14

15 i EtOH 2722 Strontium zirconate SrZrO3 12036-39-4 226.84 col cry 2600 2723 Sulfur (rhombic) S 7704-34-9 32.06 yel orth cry 95.2 (trans to

monocl) 444.61 2.07 i H2O; sl EtOH, bz,

eth; s CS2 2724 Sulfur (monoclinic) S 7704-34-9 32.06 yel monocl

needles, stable 95.3-120

115.21 444.61 2.00 i H2O; sl EtOH, bz, eth; s CS2

2725 Sulfuric acid H2SO4 7664-93-9 98.079 col oily liq 10.31 337 1.8302 vs H2O 2726 Peroxysulfuric acid H2SO5 7722-86-3 114.078 wh cry; unstab 45 dec vs H2O 2727 Nitrosylsulfuric acid HNOSO4 7782-78-7 127.077 prisms 73 dec reac H2O; s H2SO4 2728 Chlorosulfonic acid SO2(OH)Cl 7790-94-5 116.524 col-yel liq -80 152 1.75 reac H2O; s py 2729 Fluorosulfonic acid SO2(OH)F 7789-21-1 100.069 col liq -89 163 1.726 reac H2O 2730 Sulfurous acid H2SO3 7782-99-2 82.079 exists only in aq

soln 2731 Sulfamic acid H2NSO3H 5329-14-6 97.094 orth cry ≈205 dec 2.15 14.7

0 sl ace; i eth 2732 Sulfur dioxide SO2 7446-09-5 64.064 col gas -75.5 -10.05 2.619 g/L s H2O, EtOh, eth,

2733 Sulfur trioxide SO3 7446-11-9 80.063 wh needles 62.2 subl reac H2O 2734 Sulfur trioxide (γ-form) SO3 7446-11-9 80.063 col solid or liq 16.8 44.5 1.90 reac H2O 2735 Sulfur trioxide (β-form) SO3 7446-11-9 80.063 wh needles 30.5 44.5 reac H2O 2736 Sulfur bromide (SSBr2) SSBr2 13172-31-1 223.938 red oily liq -46 >25 dec 2.63 reac H2O 2737 Sulfur chloride (SSCl2) SSCl2 10025-67-9 135.036 yel-red oily liq -77 137 1.69 reac H2O; s EtOH,

bz, eth, ctc 2738 Sulfur fluoride (SSF2) SSF2 16860-99-4 102.127 col gas -164.6 -10.6 4.174 g/L reac H2O 2739 Sulfur fluoride (FSSF) FSSF 13709-35-8 102.127 col gas -133 15 4.174 g/L reac H2O 2740 Sulfur dichloride SCl2 10545-99-0 102.971 red visc liq -122 59.6 1.62 reac H2O 2741 Sulfur tetrafluoride SF4 7783-60-0 108.059 col gas -125 -40.45 4.417 g/L reac H2O 2742 Sulfur hexafluoride SF6 2551-62-4 146.055 col gas -49.596 tp -63.8 sp 5.970 g/L sl H2O; s EtOH 2743 Sulfur bromide pentafluoride SF5Br 15607-89-3 206.961 col gas -79 3.1 8.459 g/L 2744 Sulfur chloride pentafluoride SF5Cl 13780-57-9 162.510 col gas -64 -19.05 6.642 g/L 2745 Sulfur decafluoride S2F10 5714-22-7 254.114 liq -52.7 30; dec

150 2.08 i H2O

2746 Sulfuryl amide (NH2)2SO2 7803-58-9 96.109 orth plates 93 250 dec vs H2O; sl EtOH 2747 Sulfuryl chloride SO2Cl2 7791-25-5 134.970 col liq -51 69.4 1.680 reac H2O; s bz, tol,

eth 2748 Sulfuryl fluoride SO2F2 2699-79-8 102.061 col gas -135.8 -55.4 4.172 g/L sl H2O, EtOH; s tol,

ctc 2749 Sulfuryl bromide fluoride SO2BrF 13536-61-3 162.966 col liq -86 41 reac H2O 2750 Sulfuryl chloride fluoride SO2ClF 13637-84-8 118.515 col gas -124.7 7.1 1.62

0 reac H2O 2751 Pyrosulfuryl chloride S2O5Cl2 7791-27-7 215.033 col fuming liq -37 151 1.837 reac H2O 2752 Thionyl bromide SOBr2 507-16-4 207.872 yel liq -50 140 reac H2O 2753 Thionyl chloride SOCl2 7719-09-7 118.970 yel fuming liq -101 75.6 1.631 reac H2O; s bz, ctc,

chl 2754 Thionyl fluoride SOF2 7783-42-8 86.061 col gas -129.5 -43.8 3.518 g/L reac H2O; s bz, eth 2755 Sulfur fluoride oxide (SOF4) SOF4 13709-54-1 124.058 col gas -99.6 -48.5 1.95

-82 reac H2O 2756 Sulfur fluoride hypofluorite F5SOF 15179-32-5 162.054 col gas -86 -35.1 6.624 g/L 2757 Tetrasulfur tetranitride S4N4 28950-34-7 184.287 yel-oran cry 178.2 subl i H2O; reac alk, acid 2758 Tantalum Ta 7440-25-7 180.948 gray metal; cub 3017 5455 16.4 reac HF 2759 Tantalum aluminide TaAl3 12004-76-1 261.893 gray refrac powder ≈1400 7.02 i H2O, acid, alk 2760 Tantalum boride (TaB) TaB 12007-07-7 191.759 refrac orth cry 2040 14.2 2761 Tantalum boride (TaB2) TaB2 12007-35-1 202.570 blk hex cry 3100 11.2 i H2O, acid, alk 2762 Tantalum carbide (TaC) TaC 12070-06-3 192.959 gold-brown

powder; cub 3880 4780 14.3 s HF-HNO3 mixture

2763 Tantalum carbide (Ta2C) Ta2C 12070-07-4 373.907 refrac hex cry 3327 15.1 2764 Tantalum hydride TaH 13981-95-8 181.956 gray metallic solid 15.1 i acid 2765 Tantalum nitride TaN 12033-62-4 194.955 blk hex cry 3090 13.7 i H2O; sl aqua

regia; reac alk 2766 Tantalum silicide TaSi2 12039-79-1 237.119 gray powder 2200 9.14 2767 Tantalum(III) bromide TaBr3 13842-73-4 420.660 gray-grn solid dec 220 2768 Tantalum(III) chloride TaCl3 13569-67-0 287.307 blk-grn solid dec 440 s H2O 2769 Tantalum(IV) bromide TaBr4 13842-76-7 500.564 dark blue solid 392 5.77 reac H2O 2770 Tantalum(IV) chloride TaCl4 13569-72-7 322.760 dark grn solid dec 300 subl 4.35 reac H2O 2771 Tantalum(IV) iodide TaI4 14693-80-2 688.566 gray-blk solid 400 dec reac H2O 2772 Tantalum(IV) oxide TaO2 12036-14-5 212.947 tetr cry 10.0 2773 Tantalum(IV) selenide TaSe2 12039-55-3 338.87 hex cry 6.7 2774 Tantalum(IV) sulfide TaS2 12143-72-5 245.078 blk hex cry >3000 6.86 i H2O 2775 Tantalum(IV) telluride TaTe2 12067-66-2 436.15 monocl cry 9.4 2776 Tantalum(V) bromide TaBr5 13451-11-1 580.468 yel cry powder 265.8 348.8 4.67 2777 Tantalum(V) chloride TaCl5 7721-01-9 358.213 yel-wh monocl

cry; hyg 216.6 239 3.68 reac H2O; s EtOH

2778 Tantalum(V) fluoride TaF5 7783-71-3 275.940 wh monocl cry; hyg

96.9 229.5 4.74 s H2O, eth; sl CS2, ctc

2779 Tantalum(V) iodide TaI5 14693-81-3 815.470 blk hex cry; hyg 496 543 5.80 reac H2O 2780 Tantalum(V) oxide Ta2O5 1314-61-0 441.893 wh rhomb cry or

powder 1875 8.24 i H2O, EtOH, acid; s

HF 2781 Technetium Tc 7440-26-8 98 hex cry 2157 4262 11 2782 Technetium(V) fluoride TcF5 31052-14-9 193 yel solid 50 dec 2783 Technetium(VI) fluoride TcF6 13842-93-8 212 yel cub cry 37.4 55.3 3.0 2784 Tellurium Te 13494-80-9 127.60 gray-wh rhomb

cry 449.51 988 6.232 i H2O, bz, CS2

2785 Telluric(VI) acid H6TeO6 7803-68-1 229.64 wh monocl cry 136 3.07 50.1 30

2786 Tellurous acid H2TeO3 10049-23-7 177.61 wh cry 40 dec 3.0 sl H2O; s dil acid, alk

2787 Tellurium dioxide TeO2 7446-07-3 159.60 wh orth cry 733 1245 5.9 i H2O; s alk, acid 2788 Tellurium trioxide TeO3 13451-18-8 175.60 yel-oran cry 430 5.07 i H2O

2789 Tellurium dibromide TeBr2 7789-54-0 287.41 grn-brn hyg cry 210 339 reac H2O; s eth; sl chl

2790 Tellurium dichloride TeCl2 10025-71-5 198.51 blk amorp solid; hyg

208 328 6.9 reac H2O; i ctc

2791 Tellurium tetrabromide TeBr4 10031-27-3 447.22 yel-oran monocl cry

380 ≈420 dec 4.3 reac H2O; s eth

2792 Tellurium tetrachloride TeCl4 10026-07-0 269.41 wh monocl cry; hyg

224 387 3.0 reac H2O; s EtOH, tol

2793 Tellurium tetrafluoride TeF4 15192-26-4 203.59 col cry 129 195 dec reac H2O 2794 Tellurium decafluoride Te2F10 53214-07-6 445.18 col liq -33.7 59 2795 Tellurium tetraiodide TeI4 7790-48-9 635.22 blk orth cry 280 5.05 reac H2O; sl ace 2796 Tellurium hexafluoride TeF6 7783-80-4 241.59 col gas -37.6 tp -38.9 sp 9.875 g/L reac H2O 2797 Terbium Tb 7440-27-9 158.925 silv metal; hex 1359 3230 8.23 2798 Terbium nitride TbN 12033-64-6 172.932 cub cry 9.55 2799 Terbium silicide TbSi2 12039-80-4 215.096 orth cry 6.66 2800 Terbium(III) bromide TbBr3 14456-47-4 398.637 wh hex cry 830 1490 s H2O 2801 Terbium(III) chloride TbCl3 10042-88-3 265.284 wh orth cry; hyg 582 4.35 s H2O 2802 Terbium(III) chloride hexahydrate TbCl3 ∙ 6H2O 13798-24-8 373.375 hyg cry 4.35 vs H2O 2803 Terbium(III) iodide TbI3 13813-40-6 539.638 hex cry; hyg 955 ≈5.2 s H2O 2804 Terbium(III) nitrate Tb(NO3)3 10043-27-3 344.940 pink hyg solid 157

25 s EtOH 2805 Terbium(III) nitrate hexahydrate Tb(NO3)3 ∙ 6H2O 13451-19-9 453.031 col needles 89 s H2O, EtOH, ace 2806 Terbium(III) oxide Tb2O3 12036-41-8 365.849 wh cub cry 2303 7.91 2807 Terbium(III) sulfate octahydrate Tb2(SO4)3 ∙ 8H2O 13842-67-6 750.161 wh cry dec 360 sl H2O 2808 Terbium(III) sulfide Tb2S3 12138-11-3 414.046 cub cry 6.35 2809 Terbium(III) fluoride TbF3 13708-63-9 215.920 wh solid 1175 2280 i H2O 2810 Terbium(IV) fluoride TbF4 36781-15-4 234.919 wh monocl cry dec 300 i H2O 2811 Thallium Tl 7440-28-0 204.38 soft blue-wh metal 304 1473 11.8 i H2O; reac acid 2812 Thallium(I) acetate TlC2H3O2 563-68-8 263.427 hyg wh cry 131 3.68 s H2O, EtOH 2813 Thallium(I) azide TlN3 13847-66-0 246.403 yel cry 334 exp s H2O 2814 Thallium(I) bromate TlBrO3 14550-84-6 332.285 col needles 120 dec 0.49

30 s EtOH 2815 Thallium(I) bromide TlBr 7789-40-4 284.287 yel cub cry 460 819 7.5 0.05920

2816 Thallium(I) carbonate Tl2CO3 6533-73-9 468.776 wh monocl cry 273 7.11 4.69 20 i EtOH

2817 Thallium(I) chlorate TlClO3 13453-30-0 287.834 col hex cry dec 500 5.5 3.92 20

2818 Thallium(I) chloride TlCl 7791-12-0 239.836 wh cub cry 431 720 7.0 0.3320 i EtOH 2819 Thallium(I) chromate Tl2CrO4 13473-75-1 524.761 yel cry 0.003

20 sl acid, alk 2820 Thallium(I) cyanide TlCN 13453-34-4 230.401 wh hex plates 6.523 s H2O, acid, EtOH 2821 Thallium(I) ethanolate TlC2H5O 20398-06-5 249.443 cloudy liq -3 130 dec 3.49 reac H2O 2822 Thallium(I) fluoride TlF 7789-27-7 223.381 wh orth cry 326 826 8.36 24525

2823 Thallium(I) formate TlCHO2 992-98-3 249.401 hyg col needles 101 4.97 vs H2O; s MeOH 2824 Thallium(I) hexafluorophosphate TlPF6 60969-19-9 349.347 wh cub cry 4.6 2825 Thallium(I) hydroxide TlOH 12026-06-1 221.390 yel needles 139 dec 7.44 34.318

2826 Thallium(I) iodate TlIO3 14767-09-0 379.285 wh needles 0.058 sl HNO3 2827 Thallium(I) iodide TlI 7790-30-9 331.287 yel cry powder 441.7 824 7.1 0.008520 i EtOH 2828 Thallium(I) molybdate Tl2MoO4 34128-09-1 568.71 yel-wh cub cry i H2O 2829 Thallium(I) nitrate TlNO3 10102-45-1 266.388 wh cry 206 450 dec 5.55 9.55

20 s H2O; i EtOH 2830 Thallium(I) nitrite TlNO2 13826-63-6 250.389 yel cub cry 186 5.7 32.1

25 s H2O 2831 Thallium(I) oxalate Tl2C2O4 30737-24-7 496.786 wh powder 6.31 1.83

2832 Thallium(I) oxide Tl2O 1314-12-1 424.766 blk rhomb cry; hyg

579 ≈1080 9.52 s H2O, EtOH

2833 Thallium(I) perchlorate TlClO4 13453-40-2 303.834 col orth cry 501 4.89 19.7 30

2834 Thallium(I) selenate Tl2SeO4 7446-22-2 551.73 orth cry >400 6.875 2.8 20 i EtOH, eth

2835 Thallium(I) selenide Tl2Se 15572-25-5 487.73 gray plates 340 i H2O, acid 2836 Thallium(I) sulfate Tl2SO4 7446-18-6 504.830 wh rhomb prisms 632 6.77 5.47

2837 Thallium(I) sulfide Tl2S 1314-97-2 440.832 blue-blk cry 457 1367 8.39 0.02 20 sl alk; s acid

2838 Thallium(III) acetate Tl(C2H3O2)3 2570-63-0 381.514 hyg wh platelets 182 dec 2839 Thallium(III) bromide tetrahydrate TlBr3 ∙ 4H2O 13701-90-1 516.157 yel orth cry 3.65 s H2O, EtOH 2840 Thallium(III) chloride TlCl3 13453-32-2 310.742 monocl cry 155 4.7 vs H2O, EtOH, eth 2841 Thallium(III) chloride tetrahydrate TlCl3 ∙ 4H2O 13453-32-2* 382.804 orth cry 3.00 s H2O 2842 Thallium(III) fluoride TlF3 7783-57-5 261.378 wh orth cry; hyg 550 dec 8.65 reac H2O 2843 Thallium(III) nitrate Tl(NO3)3 13746-98-0 390.398 col cry reac H2O 2844 Thallium(III) oxide Tl2O3 1314-32-5 456.765 brn cub cry 834 10.2 i H2O; reac acid 2845 Thallium(III) sulfate Tl2(SO4)3 16222-66-5 696.955 col leaflets reac H2O 2846 Thallium selenide TlSe 12039-52-0 283.34 blk solid 330 i H2O, acid 2847 Thorium Th 7440-29-1 232.038 soft gray-wh

metal; cub 1750 4785 11.7 s acid

2848 Thorium hydride ThH2 16689-88-6 234.054 tetr cry 9.5 2849 Thorium boride ThB6 12229-63-9 296.904 refrac solid 2450 6.99 2850 Thorium(IV) bromide ThBr 13453-49-1 551.654 wh hyg cry 679 65

2851 Thorium carbide ThC 12012-16-7 244.049 cub cry 2500 10.6 reac H2O 2852 Thorium dicarbide ThC2 12071-31-7 256.059 yel monocl cry ≈2650 9.0 reac H2O 2853 Thorium(IV) chloride ThCl4 10026-08-1 373.850 gray-wh tetr

needles; hyg 770 921 4.59 s H2O, EtOH

2854 Thorium(IV) fluoride ThF4 13709-59-6 308.032 wh monocl cry; hyg

1110 1680 6.1

2855 Thorium(IV) iodide ThI4 7790-49-0 739.656 wh-yel monocl cry 566 837 2856 Thorium(IV) nitrate Th(NO3)4 13823-29-5 480.058 hyg wh plates 55 dec vs H2O, EtOH 2857 Thorium(IV) nitrate tetrahydrate Th(NO3)4 ∙ 4H2O 13470-07-0 552.119 wh hyg cry 500 dec 19120 s EtOH 2858 Thorium nitride ThN 12033-65-7 246.045 refrac cub cry 2820 11.6 reac H2O 2859 Thorium(IV) oxide ThO2 1314-20-1 264.037 wh cub cry 3350 4400 10.0 i H2O, alk; sl acid 2860 Thorium(IV) selenide ThSe2 60763-24-8 389.96 orth cry 8.5 2861 Thorium orthosilicate ThSiO4 14553-44-7 324.122 brn tetr cry 6.7 2862 Thorium silicide ThSi2 12067-54-8 288.209 tetr cry 1850 7.9 2863 Thorium(IV) sulfate nonahydrate Th(SO4)2 ∙ 9H2O 10381-37-0 586.301 wh monocl cry dec 2.8 4.220 2864 Thorium(IV) sulfide ThS2 12138-07-7 296.168 dark brn cry 1905 7.30 i H2O; s acid 2865 Thulium Tm 7440-30-4 168.934 silv metal; hex 1545 1950 9.32 s dil acid 2866 Thulium(II) bromide TmBr2 64171-97-7 328.742 dark grn solid 619 2867 Thulium(II) chloride TmCl2 22852-11-5 239.840 red or grn cry 718 reac H2O 2868 Thulium(II) iodide TmI2 60864-26-8 422.743 blk hyg solid 756 reac H2O 2869 Thulium(III) bromide TmBr3 14456-51-0 408.646 wh hyg cry 954 s H2O 2870 Thulium(III) chloride TmCl3 13537-18-3 275.293 yel hyg cry 845 s H2O 2871 Thulium(III) chloride heptahydrate TmCl3 ∙ 7H2O 13778-39-7 401.400 hyg cry s H2O, EtOH 2872 Thulium(III) fluoride TmF3 13760-79-7 225.929 wh cry 1158 s H2O 2873 Thulium(III) hydroxide Tm(OH)3 1311-33-7 219.956 wh or grn prec i H2O 2874 Thulium(III) iodide TmI3 13813-43-9 549.647 yel hyg cry 1021 2875 Thulium(III) nitrate Tm(NO3)3 14985-19-4 354.949 grn hyg solid 212

25 s EtOH 2876 Thulium(III) nitrate pentahydrate Tm(NO3)3 ∙ 5H2O 36548-87-5 445.025 grn hyg cry s H2O, EtOH, ace 2877 Thulium(III) oxalate hexahydrate Tm2(C2O4)3 ∙ 6H2O 26677-68-9 710.016 grn solid dec 50 s alk oxalates 2878 Thulium(III) oxide Tm2O3 12036-44-1 385.866 grn-wh cub cry 2341 3945 8.6 sl acid 2879 Tin (gray) Sn 7440-31-5 118.710 cub cry trans to wh

Sn 13.2 2586 5.769

2880 Tin (white) Sn 7440-31-5 118.710 silv tetr cry 231.928 2586 7.287 2881 Stannane SnH4 2406-52-2 122.742 unstab col gas -146 -51.8 5.017 g/L 2882 Methylstannane SnH3CH3 1631-78-3 136.769 col gas 1.4 5.590 g/L reac H2O 2883 (Dimethylamino)trimethystannane Sn(CH3)3N(CH3)2 993-50-0 207.890 liq 1 126 1.22 reac H2O 2884 Tin monophosphide SnP 25324-56-5 149.684 dull metallic solid 540 2885 Tin triphosphide Sn4P3 12286-33-8 567.761 wh cry ≈550 5.2 2886 Tin(II) acetate Sn(C2H3O2)2 638-39-1 236.799 wh orth cry 183 subl 2.31 s dil HCl 2887 Tin(II) bromide SnBr2 10031-24-0 278.518 yel powder 215 639 5.12 85

0 s EtOH, eth, ace 2888 Tin(II) chloride SnCl2 7772-99-8 189.616 wh orth cry 247.0 623 3.90 178

10 s EtOH, ace, eth; i xyl

2889 Tin(II) chloride dihydrate SnCl2 ∙ 2H2O 10025-69-1 225.647 wh monocl cry 37 dec 2.71 17810 s EtOH, NaOH; vs HCl

2890 Tin(II) fluoride SnF2 7783-47-3 156.707 wh monocl cry; hyg

215 850 4.57 s H2O; i EtOH, eth, chl

2891 Tin(II) hexafluorozirconate SnZrF6 12419-43-1 323.924 cry 4.21 s H2O 2892 Tin(II) hydroxide Sn(OH)2 12026-24-3 152.725 wh amorp solid 2893 Tin(II) iodide SnI2 10294-70-9 372.519 red-oran powder 320 714 5.28 0.98

20 s bz, chl, CS2 2894 Tin(II) oxalate SnC2O4 814-94-8 206.729 wh powder 280 dec 3.56 i H2O; s dil HCl 2895 Tin(II) oxide SnO 21651-19-4 134.709 blue-blk tetr cry 1080 dec 6.45 i H2O, EtOH; s acid 2896 Tin(II) pyrophosphate Sn2P2O7 15578-26-4 411.363 wh amorp powder 400 dec 4.009 i H2O; s conc acid 2897 Tin(II) selenide SnSe 1315-06-6 197.67 gray orth cry 861 6.18 i H2O; s aqua regia 2898 Tin(II) sulfate SnSO4 7488-55-3 214.773 wh orth cry 378 dec 4.15 18.8

2899 Tin(II) sulfide SnS 1314-95-0 150.775 gray orth cry 881 1210 5.08 i H2O; s conc acid 2900 Tin(II) tartrate SnC4H4O6 815-85-0 266.781 wh cry powder s H2O, dil HCl 2901 Tin(II) telluride SnTe 12040-02-7 246.31 gray cub cry 806 6.5 2902 Tin(IV) bromide SnBr4 7789-67-5 438.326 wh cry 29.1 205 3.34 vs H2O; s EtOH 2903 Tin(IV) chloride SnCl4 7646-78-8 260.522 col fuming liq -34.07 114.15 2.234 reac H2O; s EtOH,

ctc, bz, ace 2904 Tin(IV) chloride pentahydrate SnCl4 ∙ 5H2O 10026-06-9 350.598 wh-yel cry 56 dec 2.04 vs H2O; s EtOH 2905 Tin(IV) chromate Sn(CrO4)2 38455-77-5 350.697 brn-yel cry powder dec s H2O 2906 Tin(IV) fluoride SnF4 7783-62-2 194.704 wh tetr cry 442 705 subl 4.78 reac H2O 2907 Tin(IV) iodide SnI4 7790-47-8 626.328 yel-brn cub cry 143 364.35 4.46 reac H2O; s EtOH,

bz, chl, eth 2908 Tin(IV) oxide SnO2 18282-10-5 150.709 gray tetr cry 1630 6.85 i H2O, EtOH; s hot

conc alk 2909 Tin(IV) selenide SnSe2 20770-09-6 276.63 red-brn cry 650 ≈5.0 i H2O; s alk, conc

2910 Tin(IV) selenite Sn(SeO3)2 7446-25-5 372.63 cry powder i H2O; s hot HCl 2911 Tin(IV) sulfide SnS2 1315-01-1 182.840 gold-yel hex cry 600 dec 4.5 i H2O; s alk, aqua

regia 2912 Titanium Ti 7440-32-6 47.867 gray metal; hex 1670 3287 4.506 2913 Titanocene dichloride Ti(C5H5)2Cl2 1271-19-8 248.959 red cry 289 1.60 sl H2O, bz; s chl,

EtOH, tol 2914 Titanium hydride TiH2 7704-98-5 49.883 gray-blk powder ≈450 dec 3.75 i H2O 2915 Titanium boride TiB2 12045-63-5 69.489 gray refrac solid;

hex 3225 4.38

2916 Titanium carbide TiC 12070-08-5 59.878 cub cry 3067 4.93 i H2O; s HNO3 2917 Titanium nitride TiN 25583-20-4 61.874 yel-brn cub cry 2947 5.21 i H2O; s aqua regia 2918 Titanium phosphide TiP 12037-65-9 78.841 gray hex cry 1990 4.08 2919 Titanium silicide TiSi2 12039-83-7 104.038 blk orth cry 1500 4.0 i H2O, acid, alk; s

HF 2920 Titanium(II) bromide TiBr2 13783-04-5 207.675 blk powder dec 400 4.0 reac H2O 2921 Titanium(II) chloride TiCl2 10049-06-6 118.773 blk hex cryc 1035 1500 3.13 reac H2O; s EtOH; i

chl, eth 2922 Titanium(II) iodide TiI2 13783-07-8 301.676 blk hex cry dec 400 5.02 reac H2O 2923 Titanium(II) oxide TiO 12137-20-1 63.866 yel cub cry 1770 3227 4.95 2924 Titanium(II) sulfide TiS 12039-07-5 79.932 brn hex cry 1927 3.85 i H2O; s conc acid 2925 Titanium(III) bromide TiBr3 13135-31-4 287.579 viol hex cry dec 400 s H2O 2926 Titanium(III) chloride TiCl3 7705-07-9 154.226 red-viol hex cry;

hyg 425 dec 960 2.64 reac H2O

2927 Titanium(III) fluoride TiF3 13470-08-1 104.862 viol hex cry 950 dec 2.98 i H2O, dil acid, alk 2928 Titanium(III) iodide TiI3 13783-08-9 428.580 viol cry dec 350 2929 Titanium(III) oxide Ti2O3 1344-54-3 143.732 blk hex cry 1842 4.486 s hot HF 2930 Titanium(III) sulfate Ti2(SO4)3 10343-61-0 383.922 grn cry i H2O, EtOH; s dil

HCl 2931 Titanium(III) sulfide Ti2S3 12039-16-6 191.929 blk hex cry 3.56 2932 Titanium(III,IV) oxide Ti3O5 12065-65-5 223.598 blk monocl cry 1777 4.24 2933 Titanium(IV) bromide TiBr4 7789-68-6 367.483 yel-oran cub cry;

hyg 38.3 233.5 3.37 reac H2O

2934 Titanium(IV) chloride TiCl4 7550-45-0 189.679 col or yel liq -24.12 136.45 1.73 reac H2O; s EtOH 2935 Titanium(IV) fluoride TiF4 7783-63-3 123.861 wh hyg powder 377 subl 284 2.798 reac H2O; s EtOH,

py 2936 Titanium(IV) iodide TiI4 7720-83-4 555.485 red hyg powder 155 377 4.3 reac H2O 2937 Titanium(IV) oxide (anatase) TiO2 1317-70-0 79.866 brn tetr cry 1560 3.9 2938 Titanium(IV) oxide (brookite) TiO2 12188-41-9 79.866 wh orth cry 4.17 2939 Titanium(IV) oxide (rutile) TiO2 1317-80-2 79.866 wh tetr cry 1843 ≈3000 4.17 i H2O, dil acid; s

conc acid 2940 Titanium(IV) oxysulfate

monohydrate TiOSO4 ∙ H2O 13825-74-6* 177.944 col orth cry 2.71 reac H2O

2941 Titanium(IV) sulfate Ti(SO4)2 13693-11-3 239.992 wh-yel hyg cry 150 dec s H2O 2942 Titanium(IV) sulfide TiS2 12039-13-3 111.997 yel-brn hex cry;

hyg 3.37 s H2SO4

2943 Tungsten W 7440-33-7 183.84 gray-wh metal; cub

3414 5555 19.3

2944 Tungstic acid H2WO4 7783-03-1 249.85 yel amorp powder 100 dec 5.5 i H2O, acid; s alk 2945 Tungsten boride (W2B) W2B 12007-10-2 378.49 refrac blk powder 2670 16.0 i H2O 2946 Tungsten boride (WB) WB 12007-09-9 194.65 blk refrac powder 2665 15.2 i H2O 2947 Tungsten boride (W2B5) W2B5 12007-98-6 421.74 refrac solid 2370 11.0 i H2O 2948 Tungsten carbide (W2C) W2C 12070-13-2 379.69 refrac hex cry ≈2800 14.8 i H2O 2949 Tungsten carbide (WC) WC 12070-12-1 195.85 gray hex cry 2785 15.6 i H2O; s HNO3/HF 2950 Tungsten carbonyl W(CO)6 14040-11-0 351.90 wh cry 170 dec subl 2.65 i H2O; s os 2951 Tungsten nitride (WN2) WN2 60922-26-1 211.85 hex cry 600 dec 7.7 2952 Tungsten nitride (W2N) W2N 12033-72-6 381.69 gray cub cry dec 17.8 2953 Tungsten silicide (WSi2) WSi2 12039-88-2 240.01 blue-gray tetr cry 2160 9.3 i H2O 2954 Tungsten silicide (W5Si3) W5Si3 12039-95-1 1003.46 blue-gray refrac

solid 2320 14.4

2955 Tungsten(II) bromide WBr2 13470-10-5 343.65 yel powder dec 400 i H2O 2956 Tungsten(II) chloride WCl2 13470-12-7 254.75 gray solid dec 500 5.44 sl H2O 2957 Tungsten(II) iodide WI2 13470-17-2 437.65 oran-brn cry dec 800 6.79 i H2O 2958 Tungsten(III) bromide WBr3 15163-24-3 423.55 blk hex cry dec 180 i H2O 2959 Tungsten(III) chloride WCl3 20193-56-0 290.20 red solid 550 dec subl reac H2O 2960 Tungsten(III) iodide WI3 15513-69-6 564.55 blk solid dec r.t. i H2O; s ace; sl

EtOH, chl 2961 Tungsten(IV) bromide WBr4 14055-81-3 503.46 blk orth cry 240 subl reac H2O 2962 Tungsten(IV) chloride WCl4 13470-13-8 325.65 blk hyg powder 450 dec 4.62 reac H2O 2963 Tungsten(IV) fluoride WF4 13766-47-7 259.83 red-brn cry dec 800 reac H2O; s MeCN;

2964 Tungsten(IV) iodide WI4 14055-84-6 691.46 blk cry dec reac H2O; s EtOH; i eth chl

2965 Tungsten(IV) oxide WO2 12036-22-5 215.84 brn monocl cry ≈1500 dec 1730 10.8 i H2O, os 2966 Tungsten(IV) selenide WSe2 12067-46-8 341.76 gray hex cry 9.2 2967 Tungsten(IV) sulfide WS2 12138-09-9 247.97 gray hex cry 1250 dec 7.6 i H2O, HCl, alk 2968 Tungsten(IV) telluride WTe2 12067-76-4 439.04 gray orth cry 1020 9.43 2969 Tungsten(V) bromide WBr5 13470-11-6 583.36 brn-blk hyg solid 286 333 reac H2O 2970 Tungsten(V) chloride WCl5 13470-14-9 361.11 blk-grn hyg cry 253 286 3.88 reac H2O 2971 Tungsten(V) ethanolate W(C2H5O)5 62571-53-3 409.14 powder 105(0.05

mmHg) s EtAc

2972 Tungsten(V) fluoride WF5 19357-83-6 278.83 yel solid dec 20 reac H2O 2973 Tungsten(V) oxytribromide WOBr3 20213-56-3 439.55 dark brn tetr cry ≈5.9 2974 Tungsten(V) oxytrichloride WOCl3 14249-98-0 306.20 grn tetr cry ≈4.6 2975 Tungsten(VI) bromide WBr6 13701-86-5 663.26 blue-blk cry 309 6.9 reac H2O 2976 Tungsten(VI) chloride WCl6 13283-01-7 396.56 purp hex cry; hyg 282 337 3.52 reac H2O; s EtOH,

os 2977 Tungsten(VI) dioxydibromide WO2Br2 13520-75-7 375.65 red cry 440 subl 2978 Tungsten(VI) dioxydichloride WO2Cl2 13520-76-8 286.75 yel orth cry 265 4.67 i H2O 2979 Tungsten(VI) dioxydiiodide WO2I2 14447-89-3 469.65 grn monocl cry 400 dec 6.39 2980 Tungsten(VI) fluoride WF6 7783-82-6 297.83 yel liq or col gas 1.9 17.1 3.44 reac H2O; vs ctc,

cyhex 2981 Tungsten(VI) oxide WO3 1314-35-8 231.84 yel powder 1473 ≈1700 7.2 i H2O, os; sl acid; s

alk 2982 Tungsten(VI) oxytetrabromide WOBr4 13520-77-9 519.46 red tetr cry 277 327 ≈5.5 reac H2O 2983 Tungsten(VI) oxytetrachloride WOCl4 13520-78-0 341.65 red hyg cry 210 230 11.92 reac H2O; s bz, CS2 2984 Tungsten(VI) oxytetrafluoride WOF4 13520-79-1 275.83 wh monocl cry 105 185.9 5.07 reac H2O 2985 Tungsten(VI) sulfide WS3 12125-19-8 280.04 brn powder sl H2O; s alk 2986 Uranium U 7440-61-1 238.029 silv-wh orth cry 1135 4131 19.1 2987 Uranium boride (UB2) UB2 12007-36-2 259.651 refrac solid 2430 12.7 2988 Uranium boride (UB4) UB4 12007-84-0 281.273 refrac solid 2530 9.32 i H2O 2989 Uranium carbide (UC) UC 12070-09-6 250.040 gray cub cry 2790 2990 Uranium carbide (UC2) UC2 12071-33-9 262.050 gray tetr cry 2350 4370 11.3 reac H2O; sl EtOH 2991 Uranium carbide (U2C3) U2C3 12076-62-9 512.090 gray cub cry ≈1700 dec 12.7 2992 Uranium nitride (UN) UN 25658-43-9 252.036 gray cub cry 2805 14.3 i H2O 2993 Uranium nitride (U2N3) U2N3 12033-83-9 518.078 cub cry dec 11.3 2994 Uranium(III) bromide UBr3 13470-19-4 477.741 red hyg cry 727 s H2O 2995 Uranium(III) chloride UCl3 10025-93-1 344.388 grn hyg cry 837 5.51 vs H2O; i bz, ctc 2996 Uranium(III) fluoride UF3 13775-06-9 295.024 blk hex cry 1495 8.9 i H2O; s acid 2997 Uranium(III) hydride UH3 13598-56-6 241.053 gray-blk cub cry 11.1 2998 Uranium(III) iodide UI3 13775-18-3 618.742 blk hyg cry 766 s H2O 2999 Uranium(IV) bromide UBr4 13470-20-7 557.645 brn hyg cry 519 s H2O, EtOH 3000 Uranium(IV) chloride UCl4 10026-10-5 379.841 grn octahed cry 590 791 4.72 reac H2O; s EtOH 3001 Uranium(IV) fluoride UF4 10049-14-6 314.023 grn monocl cry 1036 1417 6.7 0.01

25 s conc acid, alk 3002 Uranium(IV) iodide UI4 13470-22-9 745.647 blk hyg cry 506 s H2O, EtOH 3003 Uranium(IV) oxide UO2 1344-57-6 270.028 brn cub cry 2847 10.97 i H2O, dil acid; s

conc acid 3004 Uranium(IV,V) oxide U4O9 12037-15-9 1096.111 cub cry 11.2 3005 Uranium(V) bromide UBr5 13775-16-1 637.549 brn hyg cry reac H2O 3006 Uranium(V) chloride UCl5 13470-21-8 415.294 brn hyg cry 287 reac H2O 3007 Uranium(V) fluoride UF5 13775-07-0 333.021 pale blue tetr cry;

hyg 348 5.81 s H2O

3008 Uranium(V,VI) oxide U3O8 1344-59-8 842.082 grn-blk orth cry 1300 dec 8.38 3009 Uranium(VI) chloride UCl6 13763-23-0 450.747 grn hex cry 177 3.6 3010 Uranium(VI) fluoride UF6 7783-81-5 352.019 wh monocl solid 64.06 tp 56.5 sp 5.09 reac H2O; s ctc, chl 3011 Uranium(VI) oxide UO3 1344-58-7 286.027 oran-yel cry ≈7.3 i H2O; s acid 3012 Uranium(VI) oxide monohydrate UO3 ∙ H2O 12326-21-5 304.043 yel orth cry 570 dec 7.05 3013 Uranium peroxide dihydrate UO4 ∙ 2H2O 19525-15-6 338.057 yel hyg cry 115 dec i H2O 3014 Uranyl acetate dihydrate UO2(C2H3O2)2 ∙ 2H2O 6159-44-0 424.146 ye cry (HOAc) 80 dec 2.89 sl EtOH 3015 Uranyl chloride UO2Cl2 7791-26-6 340.934 yel orth cry; hyg 577 vs H2O; s EtOH,

ace; i bz 3016 Uranyl fluoride UO2F2 13536-84-0 308.025 yel hyg solid 64.4

20 i bz 3017 Uranyl hydrogen phosphate

tetrahydrate UO2HPO4 ∙ 4H2O 18433-48-2 438.068 yel cry pow i H2O; s acid

3018 Uranyl nitrate UO2(NO3)2 10102-06-4 394.037 yel cry 127 25 s eth

3019 Uranyl nitrate hexahydrate UO2(NO3)2 ∙ 6H2O 13520-83-7 502.129 yel orth cry; hyg 60 118 dec 2.81 12725 s EtOH, eth 3020 Uranyl sulfate UO2SO4 1314-64-3 366.090 yel cry 3021 Uranyl sulfate trihydrate UO2SO4 ∙ 3H2O 20910-28-5 420.137 yel cry 3.28 15216 sl EtOH 3022 Vanadium V 7440-62-2 50.942 gray-wh metal;

1910 3407 6.0 i H2O; s acid

3023 Vanadocene V(C5H5)2 1277-47-0 181.128 viol cry; hyg 167 s bz, thf 3024 Vanadocene dichloride V(C5H5)2Cl2 12083-48-6 252.034 dark grn cry 205 dec s H2O, chl, EtOH 3025 Vanadium boride (VB) VB 12045-27-1 61.753 refrac solid 2250 i H2O 3026 Vanadium boride (VB2) VB2 12007-37-3 72.564 refrac solid 2450 3027 Vanadium carbide (VC) VC 12070-10-9 62.953 refrac blk cry; cub 2810 5.77 i H2O 3028 Vanadium carbide (V2C) V2C 12012-17-8 113.894 hex cry 2167 3029 Vanadium carbonyl V(CO)6 14024-00-1 219.002 blue-grn cry; flam 60 dec subl 3030 Vanadium nitride VN 24646-85-3 64.949 blk powder; cub 2050 6.13 i H2O; s aqua regia 3031 Vanadium silicide (VSi2) VSi2 12039-87-1 107.113 metallic prisms 4.42 s HF 3032 Vanadium silicide (V3Si) V3Si 12039-76-8 180.911 cub cry 1935 5.70 3033 Vanadium(II) bromide VBr2 14890-41-6 210.750 oran-brn hex cry 800 subl 4.58 reac H2O 3034 Vanadium(II) chloride VCl2 10580-52-6 121.848 grn hex plates 1350 910 subl 3.23 reac H2O; s EtOH,

eth 3035 Vanadium(II) fluoride VF2 13842-80-3 88.939 blue hyg cry 1490 reac H2O 3036 Vanadium(II) iodide VI2 15513-84-5 304.751 red-viol hex cry subl 800 5.44 reac H2O 3037 Vanadium(II) oxide VO 12035-98-2 66.941 gray-blk cry 1790 5.758 s acid 3038 Vanadium(II) sulfate heptahydrate VSO4 ∙ 7H2O 36907-42-3 273.111 viol cry 3039 Vanadium(III) bromide VBr3 13470-26-3 290.654 blk-grn hyg cry dec 500 subl 4.00 reac H2O 3040 Vanadium(III) chloride VCl3 7718-98-1 157.301 red-viol hex cry;

hyg 500 dec 3.00 reac H2O; s EtOH,

eth 3041 Vanadium(III) fluoride VF3 10049-12-4 107.937 yel-grn hex cry 1395 subl 3.363 i H2O, EtOH 3042 Vanadium(III) fluoride trihydrate VF3 ∙ 3H2O 10049-12-4* 161.983 grn rhomb cry ≈100 dec sl H2O 3043 Vanadium(III) iodide VI3 15513-94-7 431.655 brn-blk rhomb

cry; hyg dec 300 5.21 reac H2O

3044 Vanadium(III) oxide V2O3 1314-34-7 149.881 blk powder 1957 ≈3000 4.87 i H2O 3045 Vanadium(III) 2,4-pentanedioate V(CH3COCHCOCH3)3 13476-99-8 348.266 brn cry ≈185 subl ≈1.0 s MeOH, ace, bz

chl 3046 Vanadium(III) sulfate V2(SO4)3 13701-70-7 390.071 yel powder ≈400 dec sl H2O 3047 Vanadium(III) sulfide V2S3 1315-03-3 198.078 grn-blk powder dec 4.7 i H2O; s hot HCl 3048 Vanadium(IV) bromide VBr4 13595-30-7 370.558 unstab purp cry -23 dec 3049 Vanadium(IV) chloride VCl4 7632-51-1 192.754 red-brn liq -28 151 1.816 reac H2O; s EtOH,

eth 3050 Vanadium(IV) fluoride VF4 10049-16-8 126.936 grn hyg powder 325 dec subl 3.15 vs H2O 3051 Vanadium(IV) oxide VO2 12036-21-4 82.941 blue-blk powder 1967 4.339 i H2O; s acid, alk 3052 Vanadium(V) fluoride VF5 7783-72-4 145.934 col liq 19.5 48.3 2.50 reac H2O 3053 Vanadium(V) dioxide fluoride VO2F 14259-82-6 101.939 brn hyg cry 350 dec reac H2O 3054 Vanadium(V) dioxide chloride VO2Cl 13759-30-3 118.394 oran hyg cry dec 180 s thf 3055 Vanadium(V) oxide V2O5 1314-62-1 181.880 yel-brn orth cry 681 1750 3.35 0.07

25 s conc acid, alk; i EtOH

3056 Vanadium(V) sulfide V2S5 12138-17-9 262.208 grn-blk pow dec 3.0 i H2O; s acid, alk 3057 Vanadyl bromide VOBr 13520-88-2 146.845 viol cry 480 dec 3058 Vanadyl chloride VOCl 13520-87-1 102.394 brn orth cry 127 1.72 3059 Vanadyl dibromide VOBr2 13520-89-3 226.749 yel-brn cry 180 dec 3060 Vanadyl dichloride VOCl2 10213-09-9 137.847 grn hyg cry 380 dec 2.88 reac H2O; s EtOH 3061 Vanadyl difluoride VOF2 13814-83-0 104.938 yel cry 3062 Vanadyl selenite hydrate VOSeO3 ∙ H2O 133578-89-9 211.92 grn tricl plates 3.506 3063 Vanadyl sulfate dihydrate VOSO4 ∙ 2H2O 27774-13-6 199.035 blue cry powder s H2O 3064 Vanadyl tribromide VOBr3 13520-90-6 306.653 deep red liq -59 170 reac H2O 3065 Vanadyl trichloride VOCl3 7727-18-6 173.300 fuming red-yel liq -79 127 1.829 reac H2O; s MeOH,

eth, ace 3066 Vanadyl trifluoride VOF3 13709-31-4 123.936 yel hyg powder 300 480 2.459 reac H2O 3067 Water H2O 7732-18-5 18.015 col liq 0.00 99.974 0.9970

25 vs EtOH, MeOH, ace 3068 Water-d2 D2O 7789-20-0 20.027 col liq 3.82 101.42 1.1044

3069 Water-t2 T2O 14940-65-9 22.032 col liq 4.48 101.51 1.2138 25

3070 Xenon Xe 7440-63-3 131.293 col gas -111.75 -108.09 5.366 g/L sl H2O 3071 Xenon trioxide XeO3 13776-58-4 179.291 col orth cry exp ≈25 4.55 s H2O 3072 Xenon tetroxide XeO4 12340-14-6 195.291 yel solid or col

gas; exp -35.9 ≈0 dec

3073 Xenon difluoride XeF2 13709-36-9 169.290 col tetr cry 129.03 tp 114.35 sp 4.32 sl H2O 3074 Xenon tetrafluoride XeF4 13709-61-0 207.287 col monocl cry 117.10 tp 115.75 sp 4.04 reac H2O 3075 Xenon hexafluoride XeF6 13693-09-9 245.283 col monocl cry 49.48 75.6 3.56 reac H2O 3076 Xenon fluoride oxide XeOF2 13780-64-8 185.289 yel solid, stab

<-25 exp ≈0 reac H2O

3077 Xenon oxytetrafluoride XeOF4 13774-85-1 223.286 col liq -46.2 3.17 0 reac H2O

3078 Xenon dioxydifluoride XeO2F2 13875-06-4 201.289 col orth cry 30.8 exp 4.10 3079 Xenon difluoride trioxide XeO3F2 15192-14-0 217.288 unstab at r.t. -54.1 exp 3080 Xenon pentafluoride

hexafluoroarsenate XeF5AsF6 20328-94-3 415.197 wh monocl cry 130.5 3.51

3081 Xenon pentafluoride hexafluororuthenate

XeF5RuF6 39796-98-0 441.35 grn orth cry 152 3.79

3082 Xenon fluoride hexafluoroantimonate

XeF3SbF6 39797-63-2 424.039 yel-grn monocl cry

≈110 3.92

3083 Xenon fluoride hexafluoroarsenate Xe2F3AsF6 50432-32-1 508.494 yel-grn monocl cry

99 3.62 reac H2O

3084 Xenon fluoride hexafluororuthenate XeFRuF6 22527-13-5 365.35 yel-grn monocl cry

110 3.78

3085 Xenon fluoride undecafluoroantimonate

XeFSb2F11 15364-10-0 602.794 yel monocl cry 63 3.69

3086 Xenon trifluoride undecafluoroantimonate

XeF3Sb2F11 35718-37-7 640.791 yel-grn tricl cry 82 3.98

3087 Ytterbium Yb 7440-64-4 173.054 silv metal; cub 824 1196 6.90 s dil acid 3088 Ytterbium silicide YbSi2 12039-89-3 229.21 hex cry 7.54 3089 Ytterbium(II) bromide YbBr2 25502-05-0 332.85 yel cry 673 reac H2O 3090 Ytterbium(II) chloride YbCl2 13874-77-6 243.95 grn cry 721 5.27 reac H2O 3091 Ytterbium(II) fluoride YbF2 15192-18-4 211.04 gray solid 1407 i H2O 3092 Ytterbium(II) iodide YbI2 19357-86-9 426.85 blk cry 772 reac H2O 3093 Ytterbium(III) acetate tetrahydrate Yb(C2H3O2)3 ∙ 4H2O 15280-58-7 422.23 hyg col cry dec 70 2.09 vs H2O 3094 Ytterbium(III) bromide YbBr3 13759-89-2 412.75 col cry 956 dec s H2O 3095 Ytterbium(III) chloride YbCl3 10361-91-8 279.40 wh hyg powder 854 s H2O 3096 Ytterbium(III) chloride hexahydrate YbCl3 ∙ 6H2O 19423-87-1 387.49 grn hyg cry 150 dec 2.57 vs H2O 3097 Ytterbium(III) fluoride YbF3 13760-80-0 230.04 wh cry 1157 8.2 i H2O 3098 Ytterbium(III) iodide YbI3 13813-44-0 553.75 yel cry dec 700 s H2O 3099 Ytterbium(III) nitrate Yb(NO3)3 13768-67-7 359.06 col hyg solid 239

25 s EtOH 3100 Ytterbium(III) oxide Yb2O3 1314-37-0 394.08 col cub cry 2355 4070 9.2 s dil acid 3101 Ytterbium(III) sulfate octahydrate Yb2(SO4)3 ∙ 8H2O 10034-98-7 778.39 col cry 3.3 38.420 3102 Yttrium Y 7440-65-5 88.906 silv metal; hex 1522 3345 4.47 reac H2O; s dil acid 3103 Yttrium aluminum oxide Y3Al5O12 12005-21-9 593.619 grn cub cry ≈4.5 3104 Yttrium antimonide YSb 12186-97-9 210.666 cub cry 2310 5.97 3105 Yttrium arsenide YAs 12255-48-0 163.828 cub cry 5.59 3106 Yttrium boride YB6 12008-32-1 153.772 refrac solid 2600 3.72 3107 Yttrium bromide YBr3 13469-98-2 328.618 col hyg cry 904 83.3

3108 Yttrium carbide YC2 12071-35-1 112.927 refrac solid ≈2400 4.13 3109 Yttrium carbonate trihydrate Y2(CO3)3 ∙ 3H2O 5970-44-5 411.885 red-brn powder i H2O; s dil acid 3110 Yttrium chloride YCl3 10361-92-9 195.265 wh monocl cry;

hyg 721 1482 2.61 75.120 vs H2O

3111 Yttrium chloride hexahydrate YCl3 ∙ 6H2O 10025-94-2 303.356 hyg col cry dec 100 vs H2O; s EtOH 3112 Yttrium fluoride YF3 13709-49-4 145.901 wh hyg powder 1155 4.0 i H2O 3113 Yttrium hydroxide Y(OH)3 16469-22-0 139.928 wh prec or pow dec 190 i H2O 3114 Yttrium iodide YI3 13470-38-7 469.619 hyg wh-yel cry 997 s H2O, ace, EtOH 3115 Yttrium iron oxide Y3Fe5O12 12063-56-8 737.936 cub cry 1555 3116 Yttrium nitrate Y(NO3)3 10361-93-0 274.921 wh hyg solid 149

25 s EtOH 3117 Yttrium nitrate tetrahydrate Y(NO3)3 ∙ 4H2O 13773-69-8 346.982 red-wh prisms 2.68 14925 3118 Yttrium nitrate hexahydrate Y(NO3)3 ∙ 6H2O 13494-98-9 383.012 hyg cry 14925 3119 Yttrium oxide Y2O3 1314-36-9 225.810 wh cry; cub 2439 5.03 s dil acid 3120 Yttrium phosphide YP 12294-01-8 119.880 cub cry ≈4.4 3121 Yttrium sulfate octahydrate Y2(SO4)3 ∙ 8H2O 7446-33-5 610.122 red monocl cry 2.6 7.4716 3122 Yttrium sulfide Y2S3 12039-19-9 274.007 yel cub cry 1925 3.87 3123 Zinc Zn 7440-66-6 65.38 blue-wh metal;

hex 419.527 907 7.134 s acid, alk

3124 Zinc acetate dihydrate Zn(C2H3O2)2 ∙ 2H2O 5970-45-6 219.527 wh powder 237 dec 1.735 30.020 s EtOH 3125 Zinc ammonium sulfate Zn(NH4)2(SO4)2 7783-24-6 293.611 wh cry 9.2

3126 Zinc antimonide ZnSb 12039-35-9 187.169 silv-wh orth cry 565 6.33 reac H2O 3127 Zinc arsenate Zn3(AsO4)2 13464-44-3 474.065 wh powder 0.000078

20 s acid, alk 3128 Zinc arsenate octahydrate Zn3(AsO4)2 ∙ 8H2O 13464-45-4 618.187 wh monocl cry 3.33 0.00007820 s acid, alk 3129 Zinc arsenide Zn3As2 12006-40-5 346.070 powder 1015 5.528 3130 Zinc arsenite Zn(AsO2)2 10326-24-6 279.250 col powder i H2O; s acid 3131 Zinc borate 3ZnO ∙ 2B2O3 27043-84-1 383.466 wh amorp powder 3.64 sl H2O; s dil acid 3132 Zinc borate hemiheptahydrate 2ZnO ∙ 3B2O3 ∙ 3.5H2O 12513-27-8 434.69 wh cry 980 4.22 i H2O 3133 Zinc borate pentahydrate 2ZnO ∙ 3B2O3 ∙ 5H2O 12536-65-1 461.753 wh powder 3.64 0.00725 sl HCl 3134 Zinc bromate hexahydrate Zn(BrO3)2 ∙ 6H2O 13517-27-6 429.305 wh hyg solid 100 2.57 vs H2O 3135 Zinc bromide ZnBr2 7699-45-8 225.217 wh hex cry; hyg 402 ≈670 4.5 488

25 vs EtOH; s eth 3136 Zinc caprylate Zn(C8H15O2)2 557-09-5 351.816 wh hyg cry 136 sl H2O 3137 Zinc carbonate ZnCO3 3486-35-9 125.418 wh hex cry 140 dec 4.434 0.000091

20 s dil acid, alk 3138 Zinc carbonate hydroxide 3Zn(OH)2 ∙ 2ZnCO3 12070-69-8 549.107 wh powder 3139 Zinc chlorate Zn(ClO3)2 10361-95-2 232.311 yel hyg cry 60 dec 2.15 200

3140 Zinc chloride ZnCl2 7646-85-7 136.315 wh hyg cry 290 732 2.907 408 25 vs H2O; s EtOH, ace

3141 Zinc chromate ZnCrO4 13530-65-9 181.403 yel prisms 316 3.40 3.08 s acid; i ace 3142 Zinc chromite ZnCr2O4 12018-19-8 233.399 grn cub cry 5.29 3143 Zinc citrate dihydrate Zn3(C6H5O7)2 ∙ 2H2O 546-46-3 610.456 col powder sl H2O; s dil acid,

alk 3144 Zinc cyanide Zn(CN)2 557-21-1 117.443 wh powder 1.852 0.00047

20 reac acid 3145 Zinc diethyl Zn(C2H5)2 557-20-0 123.531 col liq -28 118 1.2065 reac H2O; msc eth,

peth, bz 3146 Zinc dithionate ZnS2O4 7779-86-4 193.537 wh amorp solid 200 dec 40

3147 Zinc fluoride ZnF2 7783-49-5 103.406 wh tetr needles; hyg

872 1500 4.9 1.5525 sl H2O

3148 Zinc fluoride tetrahydrate ZnF2 ∙ 4H2O 13986-18-0 175.468 wh orth cry 2.30 1.5525 3149 Zinc fluoroborate hexahydrate Zn(BF4)2 ∙ 6H2O 27860-83-9 347.109 hex cry 2.12 vs H2O; s EtOH 3150 Zinc formate dihydrate Zn(CHO2)2 ∙ 2H2O 5970-62-7 191.474 wh cry 2.207 5.220 i EtOH 3151 Zinc hexafluorosilicate hexahydrate ZnSiF6 ∙ 6H2O 16871-71-9 315.576 wh cry s H2O 3152 Zinc hydroxide Zn(OH)2 20427-58-1 99.424 col orth cry 125 dec 3.05 0.000042

3153 Zinc iodate Zn(IO3)2 7790-37-6 415.214 wh cry powder 0.64 25

3154 Zinc iodide ZnI2 10139-47-6 319.218 wh-yel hyg cry 450 625 4.74 438 25 vs H2O; s EtOH, eth

3155 Zinc laurate Zn(C12H23O2)2 2452-01-9 464.029 wh powder 128 sl H2O 3156 Zinc molybdate ZnMoO4 13767-32-3 225.35 wh tetr cry >700 4.3 i H2O 3157 Zinc nitrate Zn(NO3)2 7779-88-6 189.418 wh powder 120

3158 Zinc nitrate hexahydrate Zn(NO3)2 ∙ 6H2O 10196-18-6 297.510 col orth cry 36 dec 2.067 12025 vs EtOH 3159 Zinc nitride Zn3N2 1313-49-1 224.240 blue-gray cub cry 700 dec 6.22 i H2O 3160 Zinc nitrite Zn(NO2)2 10102-02-0 157.420 hyg solid reac H2O 3161 Zinc oleate Zn(C18H33O2)2 557-07-3 628.316 wh powder 70 dec i H2O; s EtOH, eth,

bz 3162 Zinc oxalate ZnC2O4 547-68-2 153.428 wh pwd 0.0026

3163 Zinc oxalate dihydrate ZnC2O4 ∙ 2H2O 4255-07-6 189.458 wh powder 100 dec 2.56 0.002625 s dil acid 3164 Zinc tartrate dihydrate ZnC4H4O6 ∙ 2H2O 22570-08-7 249.511 wh cry pow dec 150 0.02220 3165 Zinc oxide ZnO 1314-13-2 81.408 wh powder; hex 1974 5.6 i H2O; s dil acid 3166 Zinc 2,4-pentanedioate Zn(CH3COCHCOCH3)2 14024-63-6 263.625 cry 137 dec sl H2O; s EtOH,

DMSO 3167 Zinc pentanoate dihydrate Zn(C5H9O2)2 ∙ 2H2O 556-38-7 303.687 scales or powder sl H2O; reac acid; s

EtOH 3168 Zinc perchlorate hexahydrate Zn(ClO4)2 ∙ 6H2O 10025-64-6 372.402 wh cub cry; hyg 106 dec 2.2 121.325 s EtOH 3169 Zinc permanganate hexahydrate Zn(MnO4)2 ∙ 6H2O 23414-72-4 411.372 blk orth cry; hyg 2.45 s H2O; reac EtOH 3170 Zinc peroxide ZnO2 1314-22-3 97.408 yel-wh powder >150 dec 212 exp 1.57 i H2O; reac acid,

EtOH, ace 3171 Zinc phosphate Zn3(PO4)2 7779-90-0 386.170 wh monocl cry 900 4.0 i H2O 3172 Zinc phosphate tetrahydrate Zn3(PO4)2 ∙ 4H2O 7543-51-3 458.231 col orth cry 3.04 i H2O, EtOH; s dil

acid, alk 3173 Zinc phosphide Zn3P2 1314-84-7 258.175 gray tetr cry 1160 4.55 i H2O, EtOH; reac

acid; s bz 3174 Zinc pyrophosphate Zn2P2O7 7446-26-6 304.761 wh cry powder 3.75 i H2O; s dil acid 3175 Zinc selenate pentahydrate ZnSeO4 ∙ 5H2O 13597-54-1 298.44 tricl cry 50 dec 2.59 63.425 3176 Zinc selenide ZnSe 1315-09-9 144.37 yel-red cub cry >1100 subl 5.65 i H2O; s dil acid 3177 Zinc orthosilicate Zn2SiO4 13597-65-4 222.902 wh hex cry 1509 4.1 i H2O, dil acid 3178 Zinc selenite ZnSeO3 13597-46-1 192.37 wh powder 621 3179 Zinc stearate Zn(C18H35O2)2 557-05-1 632.348 wh powder 130 1.095 i H2O, EtOH, eth; s

bz 3180 Zinc sulfate ZnSO4 7733-02-0 161.472 col orth cry 680 dec 3.8 57.7

3181 Zinc sulfate monohydrate ZnSO4 ∙ H2O 7446-19-7 179.487 wh monocl cry 238 dec 3.20 57.725 i EtOH 3182 Zinc sulfate heptahydrate ZnSO4 ∙ 7H2O 7446-20-0 287.578 col orth cry 100 dec 1.97 57.725 i EtOH 3183 Zinc sulfide (sphalerite) ZnS 1314-98-3 97.474 gray-wh cub cry trans wurtzite

1020 4.04 i H2O, EtOH; s dil

acid 3184 Zinc sulfide (wurtzite) ZnS 1314-98-3 97.474 wh hex cry 1700 subl 4.09 i H2O; s dil acid 3185 Zinc sulfite dihydrate ZnSO3 ∙ 2H2O 7488-52-0 181.503 wh powder 200 dec 0.22425 i EtOH 3186 Zinc telluride ZnTe 1315-11-3 193.01 red cub cry 1239 5.9 i H2O 3187 Zinc thiocyanate Zn(SCN)2 557-42-6 181.573 wh hyg cry sl H2O; s EtOH 3188 Zirconium Zr 7440-67-7 91.224 gray-wh metal;

hex 1854 4406 6.52 s hot conc acid

3189 Zirconocene dichloride Zr(C5H5)2Cl2 1291-32-3 292.316 col cry 248 subl 150 3190 Zirconium boride ZrB2 12045-64-6 112.846 gray refrac solid;

hex 3050 6.17

3191 Zirconium carbide ZrC 12020-14-3 103.235 gray refrac solid; cub

3532 6.73 s HF

3192 Zirconium nitride ZrN 25658-42-8 105.231 yel cub cry 2952 7.09 s conc HF; sl dil acid

3193 Zirconium phosphide ZrP2 12037-80-8 153.172 orth cry ≈5.1 3194 Zirconium silicide ZrSi2 12039-90-6 147.395 gray powder 1620 4.88 i H2O, aqua regia; s

3195 Zirconium(II) bromide ZrBr2 24621-17-8 251.032 blue-blk cry dec 400 3196 Zirconium(II) chloride ZrCl2 13762-26-0 162.130 blk cry 772 3.16 reac H2O 3197 Zirconium(II) fluoride ZrF2 13842-94-9 129.221 blk cry 902 3198 Zirconium(II) hydride ZrH2 7704-99-6 93.240 gray tetr cry 800 dec 5.6 i H2O 3199 Zirconium(II) iodide ZrI2 15513-85-6 345.033 blk cry 827 3200 Zirconium(III) bromide ZrBr3 24621-18-9 330.936 dark blue cry dec 300 3201 Zirconium(III) chloride ZrCl3 10241-03-9 197.583 dark blue cry 627 3.05 reac H2O 3202 Zirconium(III) fluoride ZrF3 13814-22-7 148.219 blue-grn cry 927 4.26 i H2O; s acid 3203 Zirconium(III) iodide ZrI3 13779-87-8 471.937 dark blue cry 727 3204 Zirconium(IV) acetate hydroxide Zr(C2H3O2)2(OH)2 14311-93-4 243.327 wh amorp solid s H2O 3205 Zirconium(IV) ammonium

carbonate dihydrate Zr(NH4)3OH(CO3)3 ∙ 2H2O 12616-24-9* 362.404 prisms; unstab s H2O

3206 Zirconium(IV) bromide ZrBr4 13777-25-8 410.840 wh cub cry 450 tp 360 sp 3.98 reac H2O 3207 Zirconium(IV) chloride ZrCl4 10026-11-6 233.036 wh monocl cry;

hyg 437 tp 331 sp 2.80 reac H2O; s EtOH,

eth 3208 Zirconium(IV) fluoride ZrF4 7783-64-4 167.218 wh monocl cry 910 912 sp 4.43 1.5

3209 Zirconium(IV) hydroxide Zr(OH)4 14475-63-9 159.254 wh amorp powder dec 3.25 i H2O; s acid 3210 Zirconium(IV) iodide ZrI4 13986-26-0 598.842 yel-oran cub cry 500 431 sp 4.85 vs H2O 3211 Zirconium(IV) nitrate pentahydrate Zr(NO3)4 ∙ 5H2O 13746-89-9 429.320 wh hyg cry 100 dec vs H2O; s EtOH 3212 Zirconium(IV) orthosilicate ZrSiO4 10101-52-7 183.308 wh tetr cry 1540 dec 4.6 i H2O, acid 3213 Zirconium(IV) oxide ZrO2 1314-23-4 123.223 wh amorp powder 2710 4300 5.68 i H2O; sl acid 3214 Zirconium(IV) pyrophosphate ZrP2O7 13565-97-4 265.167 wh refrac solid dec 1550 i H2O, dil acid; s

HF 3215 Zirconium(IV) sulfate Zr(SO4)2 14644-61-2 283.349 wh hyg cry 410 dec 3.22 s H2O; sl EtOH 3216 Zirconium(IV) sulfate tetrahydrate Zr(SO4)2 ∙ 4H2O 7446-31-3 355.411 wh tetr cry 100 dec 2.80 vs H2O 3217 Zirconium(IV) sulfide ZrS2 12039-15-5 155.354 red-brn hex cry 1550 3.87 i H2O 3218 Zirconium(IV) tungstate Zr(WO4)2 16853-74-0 586.90 grn pow 3219 Zirconyl chloride ZrOCl2 7699-43-6 178.129 wh solid 250 dec s H2O, EtOH 3220 Zirconyl chloride octahydrate ZrOCl2 ∙ 8H2O 13520-92-8 322.252 tetr cry 400 dec 1.91 vs H2O, EtOH