Strontium sulfide

Strontium sulfide

Names
Other names Strontium monosulfide C.I. 77847
Identifiers
CAS Number	1314-96-1 Y
Jmol 3D model	Interactive image
PubChem	14820
InChI InChI=1S/S.Sr
SMILES S=[Sr]
Properties
Chemical formula	SrS
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)
Solubility in water	slightly soluble
Solubility in acids	decomposes
Refractive index (nD)	2.107
Structure
Crystal structure	Halite (cubic), cF8
Space group	Fm3m, No. 225
Coordination geometry	Octahedral (Sr2+); octahedral (S2−)
Vapor pressure	{{{value}}}
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).
N verify (what is YN ?)
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.

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. Both luminous and nonluminous sulfide phases are known, impurities, defects, and dopants being important.

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.

SrS + H₂O + CO₂ → SrCO₃ + H₂S

Strontium nitrate can also be prepared in this way.

External links

• Strontium Sulfide Info American Elements