Calcium sulfate

Serves as the analytical reagent, but also uses in the water treatment, the papermaking, the printing, the metallurgy and the coating, the rubber mounts the medicinal preparation production. Name: Calcium sulfate, dihydrate Molecular formula:CaSO4·2H2O Molecular weight:172.17 Specification:CP Standard: HG/T 3-903-76 Appearance:Colorless columnar crystal or white crystalline powder Test itemTest StandardAssay99.0%Appearance of solutionTo pass testHydrochloric acid insoluble substance0.05%Chloride0.005%Nitrites0.005%Ammonium0.015%Carbonate0.1%Iron0.001%Heavy metal(Pb)0.002%Alkaline metal and magnesium0.5%