Item

Standard

Analysis data

Appearance

White crystalline powder

Conforms

Specific rotation

-84.5º to –86.0º

-84.6º

Transmittance

Not less than 98%

98.2%

Chloride(C1)

Not more than 0.02%

0.017%

Ammonium(NH4)

Not more than 0.02%

＜0.02%

Sulfate(SO4)

Not more than 0.020%

0.014%

Heavy metals(lead)

Not more than 0.001%

＜0.001%

Iron(Fe)

Not more than 0.001%

＜0.001%

Arsenic(As2O3)

Not more than 0.0001%

＜0.0001%

Loss on drying

Not more than 0.3%

0.19%

Other amino acids

Not more than 0.5%

Conforms

PH

5.9-6.9

6.2

Residue on ignition

Not more than 0.1%

0.07%

Assay

98.5-101.5%

99.1%

Conclusion

The product conforms to the standard.

Inspector:

陈君   王琼 

Manager:

彭秀明

Remark:

Easy to moisture-absorbed; store in dry、dark、ventilated place.