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%
