... , is irritant, flammable. Molecular weight: 178 Melting point: 217° C Boiling point: 345° C Spontaneous ignition point: 540° C Close cup flashpoint: 121.11 ... , insecticide, and etc. It is also mainly used to extract chemical products such as anthracene, acenaphthene, fluorene, phenanthrene, carbazole, and etc ...