Strontium sulfide

Strontium sulfide[1]
Other names
Strontium monosulfide
C.I. 77847
1314-96-1 YesY
3D model (Jmol) Interactive image
ECHA InfoCard 100.013.864
PubChem 14820
Molar mass 119.68 g/mol
Appearance Grey powder
Odor hydrogen sulfide
Density 3.70 g/cm3
Melting point 2,002 °C (3,636 °F; 2,275 K)
slightly soluble
Solubility in acids decomposes
Halite (cubic), cF8
Fm3m, No. 225
Octahedral (Sr2+); octahedral (S2−)
Safety data sheet External MSDS
Related compounds
Other anions
Strontium oxide
Other cations
Magnesium sulfide
Calcium sulfide
Barium sulfide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Strontium sulfide is the inorganic compound with the formula SrS. It is a white solid. The compound is an intermediate in the conversion of strontium sulfate, the main strontium ore called celestite, to other more useful compounds.[2]

Production and reactions

Strontium sulfide is produced by the reduction of the sulfate above 1000 °C:

SrSO4 + 2 C → SrS + 2 CO2

About 300,000 tons are processed in this way annually.[2] Both luminous and nonluminous sulfide phases are known, impurities, defects, and dopants being important.[3]

As expected for a sulfide salt of alkaline earth, the sulfide hydrolyzes readily:

SrS + 2 H2O → Sr(OH)2 + H2S

For this reason, samples of SrS have an odor of rotten eggs.

Similar reactions are used in the production of commercially useful compounds, including the most useful strontium compound, strontium carbonate.[2]

SrS + H2O + CO2 → SrCO3 + H2S

Strontium nitrate can also be prepared in this way.


  1. Strontium sulfide,
  2. 1 2 3 J. Paul MacMillan, Jai Won Park, Rolf Gerstenberg, Heinz Wagner, Karl Köhler, Peter Wallbrecht “Strontium and Strontium Compounds” in Ullmann's Encyclopedia of Industrial Chemistry 2002, Wiley-VCH, Weinheim. doi:10.1002/14356007.a25_321.
  3. R. Ward, R. K. Osterheld, R. D. Rosenstein "Strontium Sulfide and Selenide Phosphors" Inorganic Syntheses, 1950, vol. III, pp. 11–24. doi:10.1002/9780470132340.ch4

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