The Zinc Sulphate (Heptahydrate 21%), which we offer, is tested for purity and better quality. Formulated under apt conditions, this Heptahydrate Zinc Sulphate is a White Crystalline Powder that decomposes on exposure to dry air. Ideally used in various industries, the Heptahydrate Zinc Sulphate is also used as a fertilizer to remove the deficiency of Zinc. Applications : Pigment industryChemical industryAgriculture industryTextile and leather industry