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Ensinger PEI

Manganese (IV) Oxide, MnO2 (Pyrolusite)
Categories: Ceramic; Oxide

Material Notes: Black tetragonal crystals

Key Words: MnO2, Manganese Oxide
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Physical PropertiesMetricEnglishComments
Density 5.08 g/cc0.184 lb/in³
a Lattice Constant 4.388 Å4.388 Å
c Lattice Constant 2.865 Å2.865 Å
Formula Units/Cell (Z) 22
Molecular Weight 86.937 g/mol86.937 g/mol
 
Mechanical PropertiesMetricEnglishComments
Hardness, Mohs 6.36.3
 
Electrical PropertiesMetricEnglishComments
Magnetic Susceptibility 0.002280.00228cm^3/mol
 
Thermal PropertiesMetricEnglishComments
Specific Heat Capacity 0.6223 J/g-°C0.1487 BTU/lb-°FCrystal
Heat of Formation -520 kJ/mol-520 kJ/molCrystal
Decomposition Temperature 535 °C995 °F
 
Descriptive Properties
CAS Number1313-13-9
ColorBlack
Crystal StructureTetragonalRutile
SolubilityInsoluble in H2O and HNO3

References for this datasheet.

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