Zinc sulphate heptahydrate

Zinc compounds: zinc sulphate heptahydrate

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

Zinc sulphate heptahydrate

• Formula as often written: ZnSO₄.7H₂O
• Hill system formula: H₁₄O₁₁S₁Zn₁
• CAS registry number: [7446-20-0]
• Formula weight: 287.561
• Class: complex

Synonyms

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

Physical properties

• Colour: white
• Appearance: crystalline solid
• Melting point: 100°C (dehydrates)
• Boiling point: decomposes at > 500
• Density: 1957 kg m^-3

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Element analysis

Element percentages for the elements in zinc sulphate heptahydrate

Element	%
H	4.91
O	61.20
S	11.15
Zn	22.74

Synthesis

Not available

Isotope pattern

What follows is the calculated isotope pattern for the ZnSO₄.7H₂O unit with the most intense ion set to 100%.

Formula: Zn₁S₁O₁₁H₁₄

mass  %
286 100.0 __________________________________________________
287   1.4 _
288  64.0 ________________________________
289   9.3 _____
290  42.7 _____________________
291   1.1 _
292   3.9 __
293   0.1 
294   0.1 

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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