Manganese Dioxide

Manganese Dioxide is the inorganic compound with the formula MnO. This blackish or brown solid occurs naturally as the mineral pyrolusite, which is the main ore ofmanganese and a component of manganese nodules. The principal use for MnO2 is for dry-cell batteries, such as the alkaline battery and the zinc-carbon battery. Mn is also used as a pigment and as a precursor to other manganese compounds, such asKMnO. It is used as a reagent in organic synthesis, for example, for the oxidation ofallylic alcohols.