White needle crystal.

Pink after long-term exposure to sunlight and air or iron. The density is 1.1586g / cm3 (141 ° C). Melting point 110.8 ° C. The boiling point is 280.8 ° C. Flash point 127 ° C. Flash point 585 ° C. Soluble in water, alcohol and ether. Insoluble in chloroform, carbon tetrachloride and benzene.

Is the raw material for the production of synthetic resins, adhesives, dyes and benzophenone ultraviolet absorbers. It can also be used for tire and cord dipping, as well as film and explosives.

Medicine is used as a disinfectant and antiseptic, used for dermatitis ringworm, antipruritic of wet syndrome, antiseptic, etc.