ABSTRACT
Cl CASRN: 600-25-9; molecular formula: C3H6ClNO2; FW: 123.54; RTECS: TX5075000 Physical state, color, and odor: Clear, colorless liquid with an unpleasant odor Boiling point (°C): 170.6 at 745 mmHg (Hawley, 1981) Density (g/cm3): 1.209 at 20/20 °C (Weast, 1986) Diffusivity in water (x 10-5 cm2/sec): 0.87 at 20 °C using method of Hayduk and Laudie (1974) Flash point (°C): 62.3 (open cup, NIOSH, 1997) Henry’s law constant (atm⋅m3/mol): 0.157 at 20 °C (approximate - calculated from water solubility and vapor pressure) Ionization potential (eV): 9.90 (NIOSH, 1997) Soil organic carbon/water partition coefficient, log Koc: 3.34 using method of Chiou et al. (1979) Octanol/water partition coefficient, log Kow: 4.25 using method of Kenaga and Goring (1980) Solubility in organics: Soluble in alcohol, ether (Weast, 1986), and many low molecular weight hydrocarbons (pentane, hexane, heptane), and halogenated hydrocarbons such as chloroform, methylene chloride, trichloroethylene. Solubility in water: 6 mg/L at 20 °C (quoted, Verschueren, 1983) Vapor density: 5.05 g/L at 25 °C, 4.26 (air = 1) Vapor pressure (mmHg): 6 at 25 °C (NIOSH, 1997) Exposure limits: NIOSH REL: TWA 2 ppm (10 mg/m3), IDLH 100 ppm; OSHA PEL: TWA 20 ppm (100 mg/m3); ACGIH TLV: TWA 2 ppm (adopted).
