Pyrolusite, hyperoxide of manganese, black oxide of manganese, manganic oxide
3D model (JSmol)
CompTox Dashboard (EPA)
|Molar mass||86.9368 g/mol|
|Melting point||535 °C (995 °F; 808 K) (decomposes)|
|Std enthalpy of
|EU classification||Harmful (Xn)|
|Other anions||Manganese disulfide|
|Other cations||Technetium dioxide|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
Manganese dioxide, also known as manganese(IV) oxide, is a chemical compound of manganese and oxygen. It contains manganese in the +4 oxidation state. Its chemical formula is MnO2. It is black and powdery. It is used as a depolarizer in alkaline batteries and Leclanche batteries. It is found naturally as the mineral pyrolusite.