Melting point(⁰C)                  

106.0～118.0⁰C

114.0～117.1⁰C

Assay                          

97.0-100.5%

99.20%

Identification                      

Faintly yellow,white crystalline flakes

white crystalline flakes

Acidity or alkalinity

CP2010

Identical

Clarity and colour of solution

CP2010

comforms

Loss on drying

≤1.0%

0.2%

PH

5.0～7.0

6.3

Sulphated

CP2010

comforms

Conclusion： Complies with CP2010/BP2007/USP30