Manganese dioxide

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Manganese dioxide
ChEBI
DrugBank
KEGG
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RTECS number OP0350000
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Molar mass 86.9368 g/mol
Appearance Brown-black solid
Density 5.026 g/cm3
Melting point Template:Chembox CalcTemperatures
Thermochemistry
Std enthalpy of
formation
ΔfHo298
−520 kJ·mol−1[1]
Standard molar
entropy
So298
53 J·mol−1·K−1[1]
Hazards
EU classification Harmful (Xn)
Oxidizer (O)
NFPA 704
1
1
2
 
R-phrases Template:R20/22
S-phrases

, S25

Related compounds
Other anions Manganese disulfide
Other cations Technetium dioxide
Rhenium dioxide
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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.

Related pages

References