2,3-PYRAZINDICARBOXYLIC ACID

Appearance:white crystalline powder Assay: 99.8%

Items	Standard of Specification	Result:
Appearance	white crystalline powder	Pass
Water	≤0.5%	0.20%
Residue on Ignition	≤0.2%	0.10%
Pruity	≥98.0%	99.18%
Assay	≥98.0%	99.52%
Melting point	182 0C ~185 0C	184.6 0C
Pyrazine-2-Carboxylic Acid	≤1.0%	0.73%
Other Impurity	≤0.5%	0.09%

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