It will burn when meet with naked flame, the flash point is 515~520℃. Easily soluble in acetic ether, acetone, soluble in dichloromethane, diethyl ether, some other organic solvent and alkali carbonate solution. Slightly soluble in benzene. Insoluble in water and gasoline. lower explosion limit is 21g/m3. The storage stability period is two
Relative density: 1.25; melting point: higher than 225℃; easily soluble in hot phenylamine,nitrobenzene; soluble in acetic acid; lightly soluble in acetone, chlorobenzene, benzene, ethylalcohol and diethyl ether; insoluble in gasoline, carbon tetrachloride and water; light grey white powder.