... .Usage: The material of ferrite for electrical equipment, Industrial Manganous Carbonate used as catalyst, pigment, drier, the material of manganous salts ... be used in the fertilizer as track element.Specification: ItemStandardManganous Carbonate (MnCO3)90% minMn44% minSO40.5% maxChloride(Cl)0.05% maxFe0 ... acid testSolution is clear , transparent pink liquidPacking: 25kg/bag Manganese Carbonate