Assay( on dry basis): 98.5％-101.0％
purity (HPLC) : not less than 98.0％
Appearance:
White to off-white. Odourless, crystalline powder. Soluble in ethanol, Very slightly soluble in water.
characteristic: water: no more than 2.0％
Sulphate ash: not more than 0.5％
Heavy metals: not more than 20ppm
Pyridin: not more than 500ppm
Thiamine Disulfide: not more than 1.0％
Assay( on dry basis): 98.5％-101.0％
purity (HPLC) : not less than 98.0％
Specification:
