... 3.Free sample 4.Basic chemical raw material 1. high quality of industrial naphthalene,technical naphthalene,Crude naphthalene,tar camphor ... and sublimate. The highest allowed density in the air is 10ppm,specific gravity is 1.162,melting point ... of naphthalene.3.ApplicationIt is used to produce β-hydroxynaphthalene, water reducer,phthalic anhydride, refined naphthalene , dye intermediate and synthetic ...