Appearance
White crystals or crystalline powder
Specific rotation[α]20/D
(C=1 Acetic acid)
+9.3°+ 2°
Melting point
159 to 168℃
Heavy metal(Pb)
Not more than 20ppm
Arsenic (As2O3)
Not more than 2ppm
Loss on Drying
Not more than 0.50%
Residue on ignition
Not more than 0.30%
Assay
98.0% to 102%
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