It is a white compound with a tar-like odour. It often comes as plate-like crystals. Melts at 80 deg.C. and is insoluble in water. Main pyrotechnical use is for production of black smokes (similar to anthracene). Used as an insecticide (therefore it can be found in moth balls).
May cause irritation. Toxic by inhalation or ingestion. Possible carcinogen.