Item

Standard

Analysis data

Appearance

White crystals or crystalline powder

Conforms 

Specific rotation[α]20/D
(C=10,2mol/L HCL)

+25.2 to +25.8°

 +25.6°

State of solution
(Transmittance)

clear and colorless
Not less than 98.0%

98.7%

Chloride (Cl)

19.11 to 19.50%

19.3%

Ammonium (NH4)

Not more than 0.02%

<0.02%

Sulfate (SO4)

Not more than 0.020%

<0.02%

Iron (Fe)

Not more than 10ppm

<10ppm

Heavy metal(Pb)

Not more than 10ppm

<10ppm

Arsenic (As2O3)

Not more than 1ppm

<1ppm

Other amino acids

Chromatographically
Not detectable

Conforms 

Loss on drying 

Not more than 0.50%

0.21%

Residue on ignition(sulfated)

Not more than 0.10%

0.09%

Assay

99.0% to101.0%

99.4%

pH

1.0 to 2.0

1.5

Conclusion

The product is according with standard.