Item

Standard

Analysis data

Appearance

White crystals

Conforms

Specific rotation[α]D/20

(C=2  in H2O)

+10.8°to +12.3°

+11.58°

Melting Point (oC)

159 to 161 oC

159.6oC

Chloride(C1)

Not more than 0.02%

0.01%

Sulfate(SO4)

Not more than 0.02%

0.005%

Iron(Fe)

Not more than 10ppm

9ppm

Heavy metals(Pb)

Not more than 10ppm

<10ppm

Arsenic(As2O3)

Not more than 1ppm

<1ppm

Loss on drying

Not more than 0.50%

0.12%

Residue on ignition

Not more than 0.10%

0.09%

Assay

98.0%～101.0%

99%

Conclusion

The product conforms to the standard,  the method of test consult AJI92