... material of ferrite for electrical equipment, Industrial Manganous Carbonate used as catalyst, pigment, drier, the material ... used in the fertilizer as track element.Specification: ItemStandardManganous Carbonate (MnCO3)90% minMn44% minSO40.5% maxChloride(Cl ... nitric acid0.1% maxHeavy metals0.05% maxPhosphoric acid testSolution is clear , transparent pink liquidPacking: 25kg/bag Manganese Carbonate