ABSTRACT
Cl CASRN: 7005-72-3; molecular formula: C12H9ClO; FW: 204.66 Physical state: Liquid Melting point (°C): -8 (U.S. EPA, 1980a) Boiling point (°C): 284-285 (Weast, 1986) Density (g/cm3): 1.2026 at 15 °C (Weast, 1986) 1.193 at 20 °C (Aldrich, 1990) Diffusivity in water (x 10-5 cm2/sec): 0.64 at 20 °C using method of Hayduk and Laudie (1974) Flash point (°C): >110 (Acros Organics, 2002) Henry’s law constant (x 10-4 atm⋅m3/mol): 2.2 (Pankow and Rosen, 1988) Bioconcentration factor, log BCF: 2.867 (rainbow trout, Branson, 1977) Soil organic carbon/water partition coefficient, log Koc: 3.60 using method of Kenaga and Goring (1980) Octanol/water partition coefficient, log Kow: 4.08 (Branson, 1977) Solubility in water: 3.3 mg/L at 25 °C (Branson, 1977) Vapor density: 8.36 g/L at 25 °C, 7.06 (air = 1) Vapor pressure (mmHg): 2.7 x 10-3 at 25 °C (calculated, Branson, 1977)
Biological. 4-Chlorophenyl phenyl ether (5 and 10 mg/L) did not significantly biodegrade following incubation in settled domestic wastewater inoculum at 25 °C. Percent losses reached a maximum after 2-3 wk but decreased thereafter suggesting a deadaptive process was occurring (Tabak et al., 1981). In activated sludge, a half-life of 4.0 h was measured (Branson, 1978). Photolytic. In a methanolic solution irradiated with UV light (λ >290 nm), dechlorination of 4chlorophenyl phenyl ether resulted in the formation of diphenyl ether (Choudhry et al., 1977). Photolysis of an aqueous solution containing 10% acetonitrile with UV light (λ = 230-400 nm) yielded 4-hydroxybiphenyl ether and chloride ion (Dulin et al., 1986). At influent concentrations of 1.0, 0.1, 0.01, and 0.001 mg/L, the GAC adsorption capacities were 111, 61, 33, and 18 mg/g, respectively (Dobbs and Cohen, 1980). Use: Research chemical.
