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DL-Malic Acid Items Specifications Appearance: White crystals or crystalline powder Assay: 99.0 100.5% Residue on ignition: 0.10% max Water insoluble substance: 0.1% max Fumaric Acid: 1.0% max Maleic Acid: 0.05% max Heavy metals as Pb 10 ppm max Arsenic(As) 4 ppm max
