Appearance White powder White powder
Melting point 133℃~136℃ 135℃~136℃
Specific point rotation +4.8~5.8° +5.3°
Identity (IR) IR Spectrum of the tested substance must be identical with the spectrum of the standard substance Complies Appearance of solution Opalescence Maxiumum2 Complies Colour Maxiumum intensity 5 of reference solution of the most appropriate colour Complies
Related substance Total ≤1.5% 0.23%
Impurity B ≤0.8% 0.06% A
ny other impurity Complies
Water ≤0.5% 0.1% Sulfated
ash ≤0.1% 0.02%
Heavy metal ≤20ppm ＜1ppm
Residue on ignition ≤0.05%
