Strontium sulfide
Names | |
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Other names
Strontium monosulfide
C.I. 77847 | |
Identifiers | |
3D model (
JSmol ) |
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ECHA InfoCard
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100.013.864 |
PubChem CID
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UNII | |
CompTox Dashboard (EPA)
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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 |
Refractive index (nD)
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2.107 |
Structure | |
Halite (cubic), cF8 | |
Fm3m, No. 225 | |
Octahedral (Sr2+); octahedral (S2−) | |
Hazards | |
Safety data sheet (SDS) | External MSDS |
Related compounds | |
Other anions
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Strontium oxide |
Other cations
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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
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,
- SrS + H2O + CO2 → SrCO3 + H2S
- SrS + Na2CO3 → SrCO3 + Na2S
Strontium nitrate can also be prepared in this way.
References
- ^ Strontium sulfide, cameochemicals.noaa.gov
- ^ .
- ^ "Celestine".
- ^ "List of Minerals". 21 March 2011.
- ^ .