Items

Standard

Analysis data

Appearance

White crystals or crystalline powder

conforms

Specific rotation[α]20/D
(C=1 Acetic acid)

+9.3°+ 2°

11.2°

Melting point

159 to 168℃

164℃

Heavy metal(Pb)

Not more than 20ppm

<20ppm

Arsenic (As2O3)

Not more than 2ppm

<2ppm

Loss on Drying

Not more than 0.50%

0.14%

Residue on ignition

Not more than 0.30%

0.09%

Assay

98.0% to 102%

99.0%

Inspector:

陈君    王琼

Manager:

彭秀明

Conclusion

The product is according with standard. Easy to moisture-absorbed; store in dry、dark、ventilated place.