3D model (JSmol)
CompTox Dashboard (EPA)
|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 (or, more correctly, celestine), to other more useful compounds.
As expected for a sulfide salt of alkaline earth, the sulfide hydrolyzes readily:
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: a mixture of strontium sulfide with either carbon dioxide gas or sodium carbonate leads to formation of a precipitate of strontium carbonate.
Strontium nitrate can also be prepared in this way.