Item

Standard

Analysis data

Appearance

White crystalline powder or crystals

Conforms

Specific rotation[α]20/D

+83.5 to +86.5°C=4,H2O

+85.75°

Isomer purity

≤1.0%

0.22%

Chloride (Cl)

≤0.02%

Conforms

Heavy metal(Pb)

≤10ppm

Conforms

Arsenic(As2O3)

≤2ppm

Conforms

Loss on drying

≤ 0.50%

0.35%

Iron (Fe)

≤10ppm

Conforms

Ammonium(NH4)

≤0.02%

Conforms

PH

5.9-6.9

6.3

sulfate

≤0.02%

Conforms

Other amino acids

≤0.5%

Conforms

Residue on ignition(sulfated)

≤ 0.20%

0.19%

Assay

≥98.5%

99.4%

Conclusion

The product is according with standard.