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Sodium compounds: disodium sulphide
The sodium in disodium sulphide formally is in the oxidation state 1.

Disodium sulphide
- Formula as often written: Na2S
- Hill system formula: Na2S1
- CAS registry number: [1313-82-2]
- Formula weight: 78.046
- Class: sulphide
Synonyms
- disodium sulphide
- sodium(I) sulphide
- disodium sulfide
- sodium sulfide
- sodium sulphide
- sodium(I) sulfide
Physical properties
- Colour: pink or white
- Appearance: crystalline solid
- Melting point: 1180°C; 1172°C
- Boiling point:
- Density: 1856
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Element analysis
Element percentages for the elements in disodium sulphide
| Element |
% |
| Na |
58.91 |
| S |
41.09 |
Synthesis
Not available
Solid state structure
- Geometry of sodium:
- Prototypical structure:

Isotope pattern
What follows is the calculated isotope pattern for the Na2S unit with the most intense ion set to 100%.
Formula: Na2S1
mass %
78 100.0 __________________________________________________ 79 0.8 80 4.4 __ 81 0.0 82 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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