kids encyclopedia robot

Manganese dioxide facts for kids

Kids Encyclopedia Facts
Quick facts for kids
Manganese dioxide
Manganese(IV) oxide.jpg
IUPAC name Manganese oxide
Manganese(IV) oxide
Other names Pyrolusite, hyperoxide of manganese, black oxide of manganese, manganic oxide
CAS number 1313-13-9
PubChem 14801
EC number 215-202-6
ChEBI CHEBI:136511
RTECS number OP0350000
Molecular formula MnO2
Molar mass 86.9368 g/mol
Appearance Brown-black solid
Density 5.026 g/cm3
Melting point

535 °C, 808 K, 995 °F

Solubility in water insoluble
+2280.0·10−6 cm3/mol
Std enthalpy of
formation ΔfHo298
−520 kJ·mol−1
Standard molar
entropy So298
53 J·mol−1·K−1
EU classification Harmful (Xn)
Oxidizer (O)
NFPA 704

NFPA 704.svg

R-phrases R20/22
S-phrases (S2), S25
Related compounds
Other anions Manganese disulfide
Other cations Technetium dioxide
Rhenium dioxide
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

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

See also

Kids robot.svg In Spanish: Óxido de manganeso(IV) para niños

kids search engine
Manganese dioxide Facts for Kids. Kiddle Encyclopedia.