ABSTRACT
CASRN: 532-27-4; DOT: 1697; DOT label: Poison; molecular formula: C8H7ClO; FW: 154.60; RTECS: AM6300000; Merck Index: 12, 2166 Physical state, color, and odor: Colorless to gray crystalline solid with a sharp, penetrating, irritating odor. The low odor and high odor threshold concentrations were 102 and 150 µg/m3, respectively (Ruth, 1986). Melting point (°C): 56.5 (Weast, 1986) 58-59 (Windholz et al., 1983) 52-56 (Acros Organics, 2002) Boiling point (°C): 247 (Weast, 1986) 244-245 (Windholz et al., 1983) Density (g/cm3): 1.324 at 15 °C (Weast, 1986) Diffusivity in water (x 10-5 cm2/sec): 0.69 at 15 °C using method of Hayduk and Laudie (1974) Flash point (°C): 117.9 (NIOSH, 1997) Ionization potential (eV): 9.44 (NIOSH, 1997) Soil organic carbon/water partition coefficient, log Koc: Unavailable because experimental methods for estimation of this parameter for halogenated aromatic ketones are lacking in the documented literature. However, its miscibility in water suggests its adsorption to soil will be nominal (Lyman et al., 1982). Octanol/water partition coefficient, log Kow: Unavailable because experimental methods for estimation of this parameter for halogenated aromatic ketones are lacking in the documented literature Solubility in organics: Soluble in acetone (Weast, 1986). Freely soluble in alcohol, benzene, and ether (Windholz et al., 1983)
5.4 at 20 °C (Windholz et al., 1983) 4 at 20 °C, 14 at 30 °C (quoted, Verschueren, 1983) Environmental fate: Chemical/Physical. Releases toxic chloride fumes when heated to decomposition (Sax and Lewis, 1987). Exposure limits: NIOSH REL: TWA 0.3 mg/m3 (0.05 ppm), IDLH 15 mg/m3; OSHA PEL: TWA 0.05 ppm (0.3 mg/m3); ACGIH TLV: TWA 0.05 ppm (adopted). Symptoms of exposure: An irritation concentration of 0.05 mg/m3 in air was reported by Ruth (1986). Toxicity: Acute oral LD50 for rats 50 mg/kg, rabbits 118 mg/kg, mice 139 mg/kg, guinea pigs 158 mg/kg (quoted, RTECS, 1985). Uses: Riot control agent.
