Item

Specification

Result

Appearance

Colourless crystals

Conform

Identification

A,B,C

Conform

Content

99.0%~101.0%

99.8%

Appearance of solution

Comply with the standard

Conform

PH

7.5~9.0

Conform

Reducing substances

Comply with the standard

Conform

Chlorides

0.02% max

0.01%

Sulphates

0.02% max

0.008%

Aluminum

0.2% max

0.1%

Arsenic

0.0002% max

0.0001%

Calcium and Magnesium

0.005% max

0.004%

Heavy metals

0.001% max

0.0007%

Iron

0.0001% max

0.0001%

Loss on drying

39.0%~40.5%

40.2%

Conclusion

The above product complies with Pharmaceutical Grade