MnOH2

MnOH2 is the chemical formula for manganese(II) hydroxide. It is an inorganic compound and a hydroxide of manganese in its +2 oxidation state. Manganese(II) hydroxide is a white solid that is sparingly soluble in water. When exposed to air, it readily oxidizes to form manganese(III) hydroxide or other manganese oxides, often giving it a pinkish or brownish tint.

The preparation of manganese(II) hydroxide typically involves the reaction of a soluble manganese(II) salt, such as manganese(II) sulfate or manganese(II) chloride, with a strong base like sodium hydroxide. The reaction produces a precipitate of manganese(II) hydroxide. It is a relatively weak base.

Manganese(II) hydroxide can be found in some natural mineral deposits, although it is not as common as other manganese compounds. Its instability in the presence of oxygen limits its widespread industrial applications. However, it can serve as a precursor in the synthesis of other manganese compounds and has been studied for its catalytic properties in certain chemical reactions.