产品描述

Appearance White crystals or crystalline powder Assay 99.0% min Specific Rotation -1.6 o --- -2.6 o Residue on ignition 0.05% max Chloride 0.004% max Sulphate 0.02% max State of solution clarification Readily oxidizable substance Qualified Fumaric Acid 1.0% max Maleic Acid 0.05% max Heavy metals(as Pb) 20 ppm max Arsenic(As) 2 ppm max