Item

Standard

Analysis data

Appearance

White crystals or crystalline powder

Conforms

Specific rotation[α]20/D
(C=5,1mol/L HCL)

-11.3 to -12.1°

-11.53°

State of solution
(Transmittance)

Not less than 95.0%

98.0%

Chloride (Cl)

Not more than 0.020%

0.01%

Ammonium (NH4)

Not more than 0.02%

0.01%

Sulfate (SO4)

Not more than 0.020%

0.005%

Iron (Fe)

Not more than 20ppm

6ppm

Heavy metal(Pb)

Not more than 10ppm

5ppm

Arsenic(As2O3)

Not more than 1ppm

<1ppm

Other amino acids

Chromatographically
Not detectable

Conforms

Loss on drying

Not more than 0.20%

0.12%

Residue on ignition(sulfated)

Not more than 0.20%

0.07%

Assay

98.5 to100.5%

99.0%

pH

5.0 to 6.5

5.8

Inspector:

陈蓉  胡月  

Manager:

李玲慧

Conclusion

  The  product is non-animal and non-human origin.