... service 5.ISO/SGS/MSDS/COA 1.Description :Industrial Naphthalene is white, reddish or yellowish flake crystallization. It has special ... highest allowed density inthe air is 10 ppm,specific gravity is 1.162, melting point is 80.1, boiling point is 217.9, flashing point ... is 78.89, and spontaneous ignition point is 526.Explosion limit: ...