Manganese(II) sulfate, also known as manganous sulfate, is a chemical compound. It contains manganese in its +2 oxidation state. It contains manganese and sulfate ions. Its chemical formula is MnSO4. It is a pink crystalline solid. It normally is bonded with some water molecules. It is part of a process to make manganese metal. It can be made separately though. If sulfur dioxide and manganese dioxide are reacted, it produces manganese(II) sulfate. It reacts with potassium permanganate to make manganese dioxide. It is used to add manganese to soil.