Specifications Raw mateial of pharmacueticals White crystalline powder Assay 99.5%-101.0% ITEMSSTANDARDS AppearanceWhite Crystalline powder Assay99.5-101.0% Specific Rotation(20)+12-12.8° Residue on Ignition %≤0.05% Loss on Drying≤0.20% Sulfate Ash≤0.015% Chloride(CL)≤0.01% Sulfate≤0.05% Heavy metal≤0.001% Oxalate≤0.035% Calcium≤0.02% Arsenic≤0.0003% Sulfating ash%≤0.1% Calcium%≤0.02% Water Solution clarityConforms to the standard ColorConforms to the standard