Description White crystalline powder

Identification Positive

Melting range 270-274C

Appearance of solution Clear and colorless

Acidity  Complies

Related substances Impurity A: <0.1%Impurity B: <0.1%Impurity C: <0.1%Impurity D: <0.1%Other single impurity: <0.1%Total impurity: <0.5%

Heavy metals <0.002%

Loss on drying <0.5%

Residue on ignition <0.1%

Assay(on dried basis) 99.0-101.0%

Assay(HPLC) 97.0-102.0%