Items	Specifications	Results
Characteristic	White or yellowish powder	Yellowish powder
A:TLC B:IR-spectrum C:Aromatic primary amine ID reaction	Comply	Comply
Alkalinity	7.2~9.2	8.8
Clarification of solution	Clarification	Comply
Related substance	Single max impurity 0.3% max Total impurities 1.0%max	Comply
Water	5.0% Max	3.9%
Arsenic	0.0002% max	Comply
Assay	99.0% min	100.1%