Kojic Acid Description CTFA name: 5-hydroxy-2-hydroxymethyl-1, 4-pyrone CAS no: 501-30-4 Molecular weight: 142.1 Toxicity: LD502500-3500mg/kg Dissolving water, alcohol, acetone and slightly dissolving ether second ester of second acid, chloroform and pyridine, non-dissolving benzene. Specification Appearance: White Crystal or Powder Assay: 99.0% min Melting Point: 152-155 deg. C Loss on Drying: 0.5% max Residue on Ignition: 0.1% max Chloride: 0.005% max Heavy Metals: 0.001% max Iron: 0.001% max Arsenic: 0.0001% max Microbiological Test: Bacteria: 3000CFU/g max Fungi: 50CFU/g max Colon bacillus: Negative Package Packing in 25kg cardboard drum, inner sealed with 25kg aluminum foil bag. Storage Storage out of sunlight, sealed for one year.