Chromium compounds: trichromium tetroxide

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The chromium in trichromium tetroxide formally is in the oxidation state +2, +3.

Trichromium tetroxide

  • Formula as often written: Cr3O4
  • Hill system formula: Cr3O4
  • CAS registry number: [12018-34-7]
  • Formula weight: 219.986
  • Class: oxide

Synonyms

  • trichromium tetroxide
  • chromium (II, III) oxide
  • chromium oxide

Physical properties

  • Colour:
  • Appearance: crystalline solid
  • Melting point:
  • Boiling point:
  • Density: 6100 kg m-3

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Element analysis

Element percentages for the elements in trichromium tetroxide
Element %
Cr 70.91
O 29.09

Synthesis

Not available

Isotope pattern

What follows is the calculated isotope pattern for the Cr3O4 unit with the most intense ion set to 100%.

Formula: Cr3O4

mass  %
214   0.0 
215 0.0
216 0.8
217 0.1
218 15.4 ________
219 3.5 __
220 100.0 __________________________________________________
221 33.9 _________________
222 13.0 ______
223 2.3 _
224 0.4
225 0.0
226 0.0

References

The data on these compounds pages are assembled and adapted from the primary literature and several other sources including the following.

  • R.T. Sanderson in Chemical Periodicity, Reinhold, New York, USA, 1960.
  • N.N. Greenwood and A. Earnshaw in Chemistry of the Elements, 2nd edition, Butterworth, UK, 1997.
  • F.A. Cotton, G. Wilkinson, C.A. Murillo, and M. Bochmann, in Advanced Inorganic Chemistry, John Wiley & Sons, 1999.
  • A.F. Trotman-Dickenson, (ed.) in Comprehensive Inorganic Chemistry, Pergamon, Oxford, UK, 1973.
  • R.W.G. Wyckoff, in Crystal Structures, volume 1, Interscience, John Wiley & Sons, 1963.
  • A.R.West in Basic solid state chemistry Chemistry, John Wiley & Sons, 1999.
  • A.F. Wells in Structural inorganic chemistry, 4th edition, Oxford, UK, 1975.
  • J.D.H. Donnay, (ed.) in Crystal data determinative tables, ACA monograph number 5, American Crystallographic Association, USA, 1963.
  • D.R. Lide, (ed.) in Chemical Rubber Company handbook of chemistry and physics, CRC Press, Boca Raton, Florida, USA, 77th edition, 1996.
  • J.W. Mellor in A comprehensive treatise on inorganic and theoretical chemistry, volumes 1-16, Longmans, London, UK, 1922-1937.
  • J.E. Macintyre (ed.) in Dictionary of inorganic compounds, volumes 1-3, Chapman & Hall, London, UK, 1992.

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