Iron compounds: iron sulphate heptahydrate

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The iron in iron sulphate heptahydrate formally is in the oxidation state 2.

Iron sulphate heptahydrate

  • Formula as often written: FeSO4.7H2O
  • Hill system formula: Fe1H14O11S1
  • CAS registry number: [7782-63-0]
  • Formula weight: 278.016
  • Class: complex

Synonyms

  • iron sulphate heptahydrate
  • iron(II) sulphate 7-water
  • iron sulfate heptahydrate
  • iron(II) sulfate 7-water

Physical properties

  • Colour: blue-green
  • Appearance: crystalline solid
  • Melting point: 60°C (dehydrates)
  • Boiling point:
  • Density: 1890 kg m-3

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Element analysis

Element percentages for the elements in iron sulphate heptahydrate
Element %
Fe 20.09
H 5.08
O 63.30
S 11.53

Synthesis

Not available

Isotope pattern

What follows is the calculated isotope pattern for the FeSO4.7H2O unit with the most intense ion set to 100%.

Formula: Fe1S1O11H14

mass  %
276   6.3 ___
277 0.1
278 100.0 __________________________________________________
279 3.8 __
280 7.0 ____
281 0.2
282 0.2

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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