ABSTRACT
CASRN: 110-80-5; DOT: 1171; DOT label: Combustible liquid; molecular formula: C4H10O2; FW: 90.12; RTECS: KK8050000; Merck Index: 12, 3797 Physical state, color, and odor: Clear, colorless liquid with a sweetish odor. Experimentally determined detection and recognition odor threshold concentrations were 1.1 mg/m3 (300 ppbv) and 2.0 mg/m3 (540 ppbv), respectively (Hellman and Small, 1974). Melting point (°C): -70 (quoted, Keith and Walters, 1992) Boiling point (°C): 135 (Weast, 1986) Density (g/cm3): 0.9297 at 20 °C (Weast, 1986) 0.9258 at 25.00 °C, 0.9210 at 30.00 °C, 0.9163 at 35.00 °C (Aralaguppi et al., 1997) 0.92518 at 25.00 °C (Chandrasekhar et al., 2000) Diffusivity in water (x 10-5 cm2/sec): 0.90 at 20 °C using method of Hayduk and Laudie (1974) Flash point (°C): 43.3 (closed cup), 47.8 (open cup) (Eastman, 1995) Lower explosive limit (%): 1.7 at 93 °C (NIOSH, 1997) Upper explosive limit (%): 15.6 at 93 °C (NIOSH, 1997) Ionization potential (eV): 9.77 (Lias et al., 1998) Soil organic carbon/water partition coefficient, log Koc: Unavailable because experimental methods for estimation of this parameter for aliphatic amines are lacking in the documented literature. However, its miscibility in water and low Kow suggest its adsorption to soil will be nominal (Lyman et al., 1982). Octanol/water partition coefficient, log Kow: -0.10 at 28.0 °C (shake flask-refractive index, Korenman and Dobromyslova, 1975) -0.35 at 25.0 °C (shake flask-GLC, Funasaki et al., 1984) -0.53 at 19.0 °C (shake flask-chemical reaction, Collander, 1951)
Miscible with acetone, alcohol, ether, and liquid esters (Windholz et al., 1983), and in many other polar organic solvents. Solubility in water: Miscible (Price et al., 1974). Vapor density: 3.68 g/L at 25 °C, 3.11 (air = 1) Vapor pressure (mmHg): 3.8 at 20 °C (quoted, Verschueren, 1983) 5.63 at 25 °C (Banerjee et al., 1990) 7.6 at 30.00 °C, 24.2 at 50 °C (Carmona et al., 2000) 13.67 at 40.00 °C (equilibrium cell ,Van Ness method, Alderson et al., 2003) 13.4 at 40.20 °C (ebulliometric, Chyliński et al., 2001) Environmental fate: Biological. Bridié et al. (1979) reported BOD and COD values of 1.03 and 1.92 g/g using filtered effluent from a biological sanitary waste treatment plant. These values were determined using a standard dilution method at 20 °C for a period of 5 d. When a sewage seed was used in a separate screening test, a BOD value of 1.27 g/g was obtained. Similarly, Heukelekian and Rand (1955) reported a 5-d BOD value of 1.42 g/g which is 72.4% of the ThOD value of 1.96 g/g. Photolytic. Grosjean (1997) reported a rate constant of 1.87 x 10-11 cm3/molecule⋅sec at 298 K for the reaction of 2-ethoxyethanol and OH radicals in the atmosphere. Based on an atmospheric OH radical concentration of 1.0 x 106 molecule/cm3, the reported half-life of methanol is 0.35 d (Grosjean, 1997). Stemmler et al. (1996) reported a rate constant of 1.66 x 10-11 cm3/molecule⋅sec for the OH radical-initiated oxidation of 2-ethoxyethanol in synthetic air at 297 K and 750 mmHg. Major reaction products identified by GC/MS (with their yields) were ethyl formate, 34%; ethylene glycol monoformate, 36%; ethylene glycol monoacetate, 7.8%; and ethoxyacetaldehyde, 24%. Chemical/Physical. 2-Ethoxyethanol will not hydrolyze (Kollig, 1993). At an influent concentration of 1,024 mg/L, treatment with GAC resulted in an effluent concentration of 886 mg/L. The adsorbability of the carbon used was 28 mg/g carbon (Guisti et al., 1974). Exposure limits: NIOSH REL: TWA 0.5 ppm (1.8 mg/m3), IDLH 500 ppm; OSHA PEL: TWA 200 ppm (740 mg/m3); ACGIH TLV: TWA 5 ppm (adopted). Toxicity: LC50 (7-d) for Poecilia reticulata 16,400 mg/L (Könemann, 1981). LC50 (24-h) for goldfish >5,000 mg/L (quoted, Verschueren, 1983). LC50 (96-h static bioassay) for bluegill sunfish and Menidia beryllina >10,000 mg/L (quoted, Verschueren, 1983). Acute oral LD50 for guinea pigs 1,400 mg/kg, mice 2,451 mg/kg, rats 3,000 mg/kg, rabbits 3,100 mg/kg (quoted, RTECS, 1985). Uses: Solvent for lacquers, varnishes, dopes, nitrocellulose, natural and synthetic resins; in cleaning solutions, varnish removers, dye baths; mutual solvent for formation of soluble oils; lacquer thinners; emulsion stabilizer; anti-icing additive for aviation fuels.
