Appearance, bright brown and odorless solid . m.p. 141℃, vapor tension 5.2×10-5mPa(25℃) KowlogP=0.44(PH7), density 1.5(25℃), solubility in water at 20℃ is 0.05g/L(PH5); 2.04g/L(PH7). at 25℃ in acetone is 43.8mg/L, in acetonitrile is 54.2mg/L, in carbon tetrachloride is 3.12mg/L, in ethyl acetate is 17.5mg/L, in normal hexane is 0.028mg/L, in methanol is 3.39mg/L, PH8-10.
