Composition Tech. is 77.9%.
Mol. wt. 241.5
Form Light brown solid, with a chlorine-like odour.
M.p. Decomposes at c. 190 ºC before melting
V.p. 8×10-11 mPa (25 °C)
KOW logP = 1.9 (20 °C, 0.1N HCl, i.e. neutral species)
S.g./density Bulk density 0.895 (25 °C)
Solubility In water 0.056 g/100 ml (20 °C); pH of saturated water solution 3.0 (24.5 °C). In hexane <0.004, toluene 0.013, acetone 1.82, methanol 2.32 (all in g/100 ml, 20 °C)..
Stability Very stable to acids and alkalis, but decomposed by hot concentrated alkalis. Readily forms water-soluble alkali-metal and amine salts. In aqueous solution, decomposed by u.v. irradiation, DT50 2.6 d (25 ºC).
pKa 2.3 (22 ºC)
|Loss of drying|