Item

Standard

Analysis data

Appearance

White crystals or crystalline powder

conforms

Specific rotation[α]20/D
(C=8, 1mol/L HCL)

+5.6 to +8.9°

+7.01°

State of solution
(Transmittance)

Clear and colorless
Not less than 98.0%

99.1%

Heavy metal(Pb)

Not more than 10 ppm

Not more than 10 ppm

Arsenic(As2O3)

Not more than 1ppm

Not more than 1ppm

Sulfate(SO4)

Not more than0.02%

conforms

Other amino acids

Chromatographically
Not detectable

conforms

Residue on ignition(sulfated)

Not more than 0.1%

0.07%

Assay

98.0 to102.0%

99.26%

pH

1.5 to 2.0

1.86

Inspector:

   陈君    张红芳  

Manager:

  彭秀明

Conclusion

The product conforms to standard.