Chromium compounds: hexaaquachromium nitrate trihydrate

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The chromium in hexaaquachromium nitrate trihydrate formally is in the oxidation state 3.

Hexaaquachromium nitrate trihydrate

  • Formula as often written: Cr(NO3)3.9H2O
  • Hill system formula: Cr1H18N3O18
  • CAS registry number: [7789-02-8]
  • Formula weight: 400.148
  • Class: complex


  • hexaaquachromium nitrate trihydrate
  • chromium trinitrate nonahydrate
  • chromium trinitrate 9-water
  • chromium(III) nitrate 9-water

Physical properties

  • Colour: green-black
  • Appearance: crystalline solid
  • Melting point: 66°C (dehydrates)
  • Boiling point: >100°C
  • Density: 1800 kg m-3


Coming soon...

Element analysis

Element percentages for the elements in hexaaquachromium nitrate trihydrate
Element %
Cr 12.99
H 4.53
N 10.50
O 71.97


Not available

Isotope pattern

What follows is the calculated isotope pattern for the Cr(NO3)3.9H2O unit with the most intense ion set to 100%.

Formula: Cr1N3O18H18

mass  %
398   5.2 ___
399 0.1
400 100.0 __________________________________________________
401 13.3 _______
402 6.7 ___
403 0.5
404 0.2


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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