ABSTRACT
CASRN: 75-43-4; DOT: 1029; molecular formula: CHCl2F; FW: 120.91; RTECS: PA8400000 Physical state, color, and odor: Colorless liquid or gas with an ether-like odor Melting point (°C): -135 (quoted, Horvath, 1982) Boiling point (°C): 8.92 (quoted, Horvath, 1982) Density (g/cm3): 1.366 at 25 °C (quoted, Horvath, 1982) Diffusivity in water (x 10-5 cm2/sec): 1.08 at 25 °C using method of Hayduk and Laudie (1974) Flash point (°C): Nonflammable gas (NIOSH, 1997) Ionization potential (eV): 12.39 ± 0.20 (Franklin et al., 1969) Soil organic carbon/water partition coefficient, log Koc: 1.54 using method of Chiou et al. (1979) Octanol/water partition coefficient, log Kow: 1.55 (Hansch and Leo, 1979) Solubility in organics: Soluble in acetic acid, alcohol, and ether (Weast, 1986) Solubility in water: 0.7 wt % at 30 °C (NIOSH, 1997) Vapor density: 4.94 g/L at 25 °C, 4.17 (air = 1) Vapor pressure (mmHg): 1,216 at 11.8 °C (NIOSH, 1997) Environmental fate: Chemical/Physical. The experimental hydrolysis half-life of dichlorofluoromethane in water at 25 °C and pH 7 is 234 yr (Jeffers and Wolfe, 1996).
