Item

Standard

Analysis data

Appearance

White crystals or crystalline powder

conforms

Specific rotation[α]20/D
(C=8 in 6N HCl)

+26.3°to +27.4°

26.4°

Chloride (Cl)

Not more than 0.050%

<0.05%

Ammonium (NH4)

Not more than 0.02%

<0.02%

Sulfate (SO4)

Not more than 0.030%

<0.03%

Iron (Fe)

Not more than 30ppm

7ppm

Heavy metal(Pb)

Not more than 10ppm

6ppm

Arsenic(As2O3)

Not more than 1.5ppm

<1.5ppm

Other Amino Acids

Chromatographically
Not detectable

conforms

Loss on drying

Not more than 1.0%

0.18%

Residue on ignition(sulfated)

Not more than 0.20%

0.06%

Assay

98.5% to 101.5%

99.1%

pH

10.5 to 12

11.0

Inspector:

陈君     王明芳

Manager:

彭秀明

Conclusion

The product is according with standard.