Introduction Name:Magnesium Sulphate Heptahydrate CAS No: 10034-99-8 Formula: MgSO4�·7H2O Apperance:White crystal(1-4MM,1-3MM,0.1-1MM) Assay:99.5% Magnesium:9.8% Application 99.5% Magnesium Sulphate Heptahydrate is used as a leather processing aid. Adding magnesium sulfate heptahydrate can make leather softer. Promote the adhesion of tanning agent and leather, increase the weight of leather. In addition,99.5% Magnesium Sulphate Heptahydrate crystal can be used for tanning, explosive, fertilizer, papermaking, porcelain printing, dyestuff, lead-acid battery and other industrial .It as a oral laxative for medical treatment, as a additive for mineral water.