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    Items Standard (United States Pharmacopoeia)
    Appearance White crystal without black dots and with good fluidity
    Bulk Density NLT 0.45g/ml
    Assay 97.5-102.5%
    Specific rotation +38.9°—+42.9°
    PH 6.0-7.5
    Loss on dry NMT 0.5%
    Residue on ignition NMT 0.1%
    Chloride NMT 0.2%
    Melting point 196°-205°
    Heavy Metals NMT 10PPM
    Iron NMT 10PPM
    Lead NMT 0.5PPM
    Arsenic NMT 0.5PPM
    Mercury NMT 0.5PPM
    Organic volatile impurities Meet the requirements
    Total Bacteria Count NMT 1000Cfu/g
    Yeast & Molds NMT 100Cfu/g
    Salmonella Negative
    E.Coil Negative
    Staphylococcus Aureus Negative