Appearance white crystals or crystalline powder; strongly acid taste.
Identification infrared absorption
Specific optical rotation +5.6~ +8.9
Sulfate f_ 0. 03 %
Iron f_ 0. 003 %
Heavy metals (as pb), f_ 0.00 15%
Organic volatile impurities meets the requirement
Loss on drying, f_ 1 %
Residue on ignition, c f_ 0.1%
Assay 98.5-101.5 %
Ph value 1.5 - 2.0
Organic volatile impurities meets the requirement
Packing: 25kg fiber drum
Usp24
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