ABSTRACT
Vapor Pressure (Pa at 25°C or as indicated and reported temperature dependence equations. Additional data at other temperatures designated * are compiled at the end of this section): 88566* (–22.29°C, static method-differential manometer, measured range –109.39 to –22.29°C, Spencer &
Wild 1935) 101325* (–19.5°C, summary of literature data, temp range –88 to –19.5°C, Stull 1947) log (P/mmHg) = [–0.2185 × 5917.9/(T/K)] + 7.985746; temp range –88 to –19.5°C (Antoine eq., Weast 1972-73) 1333 (–88°C, Verschueren 1983) log (P/kPa) = 6.32524 – 972.5/(244.329 + t/°C), temp range (Antoine eq. from reported exptl. data, Boublik et al. 1984) log (P/mmHg) = 7.1958 – 970.65/(244.1 + t/°C); temp range –109 to –22°C (Antoine eq., Dean 1985, 1992) log (PL/kPa) = 6.5475 – 1062.4/(–19.92 + T/K), temp range 184-251 K (Antoine eq.-I, Stephenson & Malanowski
1987) log (PL/kPa) = 6.4306 – 1013.206/(–24.883 + T/K); temp range 163-251 K (Antoine eq.-II, Stephenson &
Malanowski 1987) 517690 (1 atm, Howard 1989) log (P/mmHg) = 41.9603 – 2.1355 × 103/(T/K) – 13.765·log (T/K) + 9.568 × 10-3·(T/K) – 5.1101 × 10-12·(T/K)2;
temp range 181-408 K (vapor pressure eq., Yaws 1994)
Henry’s Law Constant (Pa m3/mol at 25°C or as indicated and reported temperature dependence equations. Additional data at other temperatures designated * are compiled at the end of this section): 0.0331 (20°C, porous membrane gas-liquid equilibration system, Dong & Dasgupta 1986) 0.0169 (review, Gaffney et al. 1987) 0.0341* (gas stripping-headspace GC, measured range 15-45°C, Betterton & Hoffmann 1988)
O
H H
ln [KH′/(M/atm)] = –6.0 + 2844/(T/K), temp range 10-45°C (gas stripping-HPLC measurements, freshwater,
Zhou & Mopper 1990) ln [KH′/(M/atm)] = –6.7 + 3069/(T/K), temp range 25-45°C (gas stripping-HPLC measurements, seawater (salin-
ity 35 ± 1‰), Zhou & Mopper 1990) 0.021 (20°C, selected from literature experimentally measured data, Staudinger & Roberts 1996, 2001) log KAW = 4.621 – 2840/(T/K) (van’t Hoff eq. derived from literature data, Staudinger & Roberts 2001)
Octanol/Water Partition Coefficient, log KOW: 0.35 (shake flask, Johnson & Piret 1948) –1.54 (Kenaga & Goring 1980) 0.00 (Verschueren 1983) 0.35 (recommended, Sangster 1989) 0.35 (recommended, Hansch et al. 1995)
Octanol/Air Partition Coefficient, log KOA:
Bioconcentration Factor, log BCF: no bioconcentration. in fish and shrimp observed (Howard 1989)
Sorption Partition Coefficient, log KOC:
Environmental Fate Rate Constants, k, and Half-Lives, t½: Volatilization: Photolysis: sunlight photolysis t½ = 1.25-6.0 h, based on measured gas-phase photolysis by simulated sunlight
(Calvert et al. 1972; Su et al. 1979; quoted, Howard et al. 1991); rate constant k = 8.0 × 10-5 s-1 in the atmosphere (Carlier et al. 1986); calculated lifetime of 4 h (Atkinson 2000).
