Back أكسيد المنغنيز الثنائي والثلاثي Arabic منقنز (II, III) اوکسید AZB Mangan(II,III)-oksid BS Oxid manganato-manganitý Czech Mangan(II,III)-oxid German منگنز (II, III) اکسید Persian Oxyde de manganèse(II,III) French Tetrossido di trimanganese Italian Манган(II,III) оксид Macedonian Óxido de manganês(II,III) Portuguese

Manganese(II,III) oxide

Manganese(II,III) oxide
Names
IUPAC name
manganese(II) dimanganese(III) oxide
Other names
Manganese tetroxide; Manganese oxide, Manganomanganic oxide, Trimanganese tetraoxide, Trimanganese tetroxide[1]
Identifiers
3D model (JSmol)
ECHA InfoCard 100.013.879 Edit this at Wikidata
RTECS number
  • OP0895000
UNII
  • InChI=1S/3Mn.4O
    Key: GVNFAUMGUISVJW-UHFFFAOYSA-N
  • [Mn]=O.O=[Mn]O[Mn]=O
Properties
Mn3O4

MnO·Mn2O3

Molar mass 228.812 g/mol
Appearance brownish-black powder[1]
Density 4.86 g/cm3
Melting point 1,567 °C (2,853 °F; 1,840 K)
Boiling point 2,847 °C (5,157 °F; 3,120 K)
insoluble
Solubility soluble in HCl
+12,400·10−6 cm3/mol
Structure
Spinel (tetragonal), tI28
I41/amd, No. 141
Hazards
NIOSH (US health exposure limits):
PEL (Permissible)
 C 5 mg/m3[1]
REL (Recommended)
 None established[1]
IDLH (Immediate danger)
 N.D.[1]
Thermochemistry
149 J·mol−1·K−1[2]
−1387 kJ·mol−1[2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Manganese(II,III) oxide is the chemical compound with formula Mn3O4. Manganese is present in two oxidation states +2 and +3 and the formula is sometimes written as MnO·Mn2O3. Mn3O4 is found in nature as the mineral hausmannite.

  1. ^ a b c d e NIOSH Pocket Guide to Chemical Hazards. "#0381". National Institute for Occupational Safety and Health (NIOSH).
  2. ^ a b Zumdahl, Steven S. (2009). Chemical Principles 6th Ed. Houghton Mifflin Company. p. A22. ISBN 978-0-618-94690-7.

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