zinc sulphate monohydrate:Molecular formula:znso4h2o Molecular Weight:179.45Usage: Feed / Industry / Fertilizer / Milling / Rubber / ChemicalCharacter:Powder / GranularQuality: FAMI-QS certificationContent: Zn:34.5% min Cd:10ppm max Pb:10ppm max As:10ppm max Fe:200ppm maxPH is more than 4.Matter insoluble in water percent by weight is 0.05%min