Strontium sulfide

Source: Wikipedia, the free encyclopedia.
Strontium sulfide[1]
Names
Other names
Strontium monosulfide
C.I. 77847
Identifiers
3D model (
JSmol
)
ECHA InfoCard
100.013.864 Edit this at Wikidata
UNII
  • InChI=1S/S.Sr
  • S=[Sr]
Properties
SrS
Molar mass 119.68 g/mol
Appearance white solid (spoiled samples are colored)
Odor none (degraded samples smell of hydrogen sulfide)
Density 3.70 g/cm3
Melting point 2,002 °C (3,636 °F; 2,275 K)
slightly soluble
Solubility in acids decomposes
2.107
Structure
Halite (cubic), cF8
Fm3m, No. 225
Octahedral (Sr2+); octahedral (S2−)
Hazards
Safety data sheet (SDS) 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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Strontium sulfide is the

celestite (or, more correctly, celestine), to other more useful compounds.[2][3][4]

Production and reactions

Strontium sulfide is produced by

reduced
, leaving the sulfide:

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.[6]

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,

precipitate of strontium carbonate.[2][5]

SrS + H2O + CO2 → SrCO3 + H2S
SrS + Na2CO3 → SrCO3 + Na2S

Strontium nitrate can also be prepared in this way.

References

External links