Items   

CP standard       

USP standard 

Assay

≥98.5%

≥98.5%

Specific rotation

-26.0°— -29.0°

-26.7°— -29.1°

PH value

5.0-6.5

5.0-6.5

Light transmittance

≥98.0%

——

Chloride

≤0.02%

≤0.05%

Sulfate

≤0.02%

≤0.03%

Ammonium

≤0.02%

——

Other amino acids

Comply with the standard

Comply with the standard

Loss on drying

≤0.2%

≤0.2%

Residue on ignition

≤0.1%

≤0.4%

Iron

≤0.001%

≤0.003%

Heavy metals

≤0.001%

≤0.0015%

Arsenic

≤0.0001%

——

Bacterial endotoxin

The amount of bacterial endotoxin in every 1g of this product should be less than 12EU

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