CAS No.: 1188-21-2
Appearance White crystals or crystalline powder
Specific Rotation[a]D20 -22.0° to -26.0°
State of solution Clear and colorless
Not less than 95.0%
Heavy Metals (Pb) Not more than 20ppm
Aresenic (As2O3) Not more than 2ppm
Loss on drying Not more than 0.5%
Residue on ignition Not more than 0.3%
Assay 97.5% to 102.5%
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