Appearance, white crystaline solid , m.p. 174-178℃, vapor tension 3×10-6mPa(25℃)KowlogP=0.99(PH7). density 1.48; solubility at 25℃ in water is 587ppm(PH5), 3.18g/100g(PH7). in dichloroethene 1.4, in acetone 4, in methanol 15, in toluene is 3, in normal hexane <0.01