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Analysis contents Analysis standard
Appearance White Crystalline Powder
Identification Positive
Clarity of solution Clear
Color of solution ≤ BY7
Assay 99.0%-100.0%
Sulphate Ash(Residue On Ignition) ≤ 0.1%
Specific Rotation +20.5° ~+21.5°
Loss on Drying ≤ 0.4%
pH(With 2% Water Solution) 2.4-2.8
pH(With 5% Water Solution) 2.1-2.6
Copper ≤ 5ppm
Heavy Metals ≤ 3ppm
Lead ≤ 2ppm
Iron ≤ 2ppm
Arsenic ≤ 3ppm
Cadmium ≤ 1ppm
Mercury ≤ 1ppm
Oxalic Acid ≤ 0.2%
Organic volatile impurities Meets the requirements
Related Substanc Impurity C ≤ 0.15%
Impurity D ≤ 0.15%
Any other Unspecific Impurities ≤ 0.10%
Total Plate Count ≤ 1, 000cfu/g