ITEMS

SPECIFICATION

RESULTS

Appearance

White or pale yellow crystalline powder

White crystalline powder

Identification

Infrared absorption: conforms to standard

Complies

pH

8.0～9.0

8.6

Residue on ignition

Not more than 0.1%

0.06%

Heavy metals

Not more than 0.001%

Complies

Related compounds

Impurity A at 220nm:not more than 0.5%

Total impurity at 298nm:not more than 0.5%

＜LOD

＜LOD

Monothanolamine content

223mg/g~230mg/g

226mg/g

Assay

97.5%~101.5%

100.4%

Conclusion: The product complies with USP32 standard