3D model (JSmol)
|Molar mass||119.68 g/mol|
|Appearance||white solid (spoiled samples are colored)|
|Odor||none (degraded samples smell of hydrogen sulfide)|
|Melting point||2,002 °C (3,636 °F; 2,275 K)|
|Solubility in acids||decomposes|
Refractive index (nD)
|Halite (cubic), cF8|
|Fm3m, No. 225|
|Octahedral (Sr2+); octahedral (S2−)|
|Safety data sheet||External MSDS|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
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.
Production and reactions
Strontium sulfide is produced by the reduction of the sulfate above 1000 °C:
- SrSO4 + 2 C → SrS + 2 CO2
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.
- SrS + H2O + CO2 → SrCO3 + H2S
Strontium nitrate can also be prepared in this way.
- Strontium sulfide, cameochemicals.noaa.gov
- 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.
- 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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