DL-Malic acid

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描述
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
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