Potassium Formate,Dicalcium Phosphate,Monocalcium Phosphate

  Typically manganese ores are purified by their conversion to manganese sulfate. Treatment of aqueous solutions of the sulfate with sodium carbonate leads to precipitation of manganese carbonate, which can be calcined to give the oxides MnOx. Manganese dioxide reacts with sulfur dioxide to produce manganese sulfate:
MnO2 + SO2 → MnSO4

  Manganese sulfate is a by-product of various industrially significant oxidations that use manganese dioxide, including the manufacture of hydroquinone and anisaldehyde.

  Treatment of manganese sulfate with potassium permanganate affords manganese dioxide, a component of dry-cell batteries.