Refined Naphthalene powder Introduction: Industrial Naphthalene is white, reddish or yellowish flake crystallization. It has
specialodour and it is easy to volatilize and sublimate. The highest allowed density in the 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: Dust lower limit is 2.5 g/m2, steam 0.9~5.9%. It belongs to the second class flammabe solid. It is mainly made up of naphthalene.
Application: It is the main raw material of producing phthalic anhydride, dyestuff, resin , ¦Á- naphthalene acid,saccharin and so on. Specification: Industrial Naphthalene Item Index High-class Product First-class product Qualified Product Appearance White(reddish or yellowish powder allowed) flake crystallization Crystallization Point(oc, ¡Ý) 78.3 78.0 77.5 Nonvolatile Matter(%, ¡Ü) 0.04 0.06 0.08 Ash (%, ¡Ü) 0.01 0.01 0.02
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