Name Refined Naphthalene Synonyms Naphthalene Molecular Formula C10H8 Molecular Weight 128.17 CAS Registry Number 91-20-3;72931-45-4 Specification >99% Appearance White Flakes Assay 98% min Specific Rotation 22.8~28.8 degree Loss on Drying Not more than 5.0% pH 1.0~3.0 Heavy Metals (Pb) Not more than 10 PPM Quality Standard Customer's Standards Use Intermediate Medicinal Availability Regular production Packing polyethlene woven bag (25-50kg/bag) Packed with woven bag lined with plastic bag, 31kg/bag, 490 bag/20'FCL