ABSTRACT
CASRN: 59-50-7; DOT: 2669; DOT label: Poison; molecular formula: C7H7ClO; FW: 142.59; RTECS: GO7100000; Merck Index: 12, 2184 Physical state, color, and odor: Colorless, white, or pinkish crystals with a slight phenolic odor. On exposure to air it slowly becomes light brown. Melting point (°C): 66-68 (Weast, 1986) 63-65 (Fluka, 1988) Boiling point (°C): 235 (Weast, 1986) Diffusivity in water (x 10-5 cm2/sec): 0.71 at 20 °C using method of Hayduk and Laudie (1974) Dissociation constant, pKa: 9.549 at 25 °C (Dean, 1973) Flash point (°C): 118 (Acros Organics, 2002) Henry’s law constant (x 10-6 atm⋅m3/mol): 2.5 at 20 °C (calculated, Mabey et al., 1982) Soil organic carbon/water partition coefficient, log Koc: 2.89 using method of Karickhoff et al. (1979) Octanol/water partition coefficient, log Kow: 2.18 (Hansch and Leo, 1979) 3.10 (quoted, Leo et al., 1971) Solubility in organics: Soluble in ethanol, ether (Weast, 1986), benzene, chloroform, acetone, petroleum ether, fixed oils, terpenes, and aqueous alkaline solutions (Windholz et al., 1983). Also soluble in cyclic ethers such as tetrahydrofuran.
