ITEMS

SPECIFICTIONS

RESULTS

Appearence

White crystalline powder Or Crystalline Powder

Conforms

Specific rotation [a]D20

+21.4° ~ +23.6°

+21.80°

Loss on drying

≤0.50%

0.30%

Residue on ignition

≤0.1%

0.05%

Chloride (CL)

16.50 ~ 17.10%

16.70%

Sulfate（SO4）

≤0.03%

0.010%

Heavy Metals (Pb)

NMT 15PPM

6PPM

Lead(pb)

≤3ppm

0.5ppm

As2O3(As)                 

≤0.5ppm

0.15ppm

Mercury (Hg)

≤0.1ppm

0.01ppm

Cadmium (Cd)

≤1ppm

0.02ppm

Chromatographic purity

not more than 0.5%of any individual impurity is found

not more than 2.0% of total impurities is found

Conforms

pH

4.7 ~ 6.2

5.1

Assay

98.5% ~ 101.5%

99.8%

Conclusion: Comply with usp32 standard