Appearance | White crystals or crystalline powder |
Assay | 99.0 – 100.5% |
Specific Rotation | -0.10 o — +0.10 o |
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 |
DL-Malic acid
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