ABSTRACT
CASRN: 118-52-5; molecular formula: C5H6Cl2N2O2; FW: 197.03; RTECS: MU0700000; Merck Index: 12, 3115 Physical state, color, and odor: White powder or four-sided crystals from chloroform with a chlorine-like odor. Aqueous solutions are acidic. Melting point (°C): 131-132 (Acros Organics, 2002) Boiling point: Sublimes at 100 °C (quoted, Keith and Walters, 1992) Density (g/cm3): 1.5 at 20/20 °C (Windholz et al., 1983) Diffusivity in water: Not applicable - reacts with water Flash point (°C): 174.6 (NIOSH, 1997) Henry’s law constant (atm⋅m3/mol): Not applicable - reacts with water Soil organic carbon/water partition coefficient, log Koc: Not applicable - reacts with water Octanol/water partition coefficient, log Kow: Not applicable - reacts with water Solubility in organics (wt % at 25 °C): Benzene (9.2), carbon tetrachloride (12.5), chloroform (14), 1,2-dichloroethane (32.0), methylene chloride (30.0), 1,1,2,2-tetrachloroethane (17.0) (Windholz et al., 1983). Solubility in water: 0.21 wt % at 25 °C, 0.60 wt % at 60 °C (quoted, Windholz et al., 1983) Environmental fate: Chemical/Physical. Reacts with water (pH 7.0) releasing hypochlorous acid. At pH 9, nitrogen chloride is formed (Windholz et al., 1983).
