Strontium sulfide is the

inorganic compound In chemistry, an inorganic compound is typically a chemical compound that lacks carbon–hydrogen bonds, that is, a compound that is not an organic compound. The study of inorganic compounds is a subfield of chemistry known as '' inorganic chemi ...

with the formula Sr S. It is a white solid. The compound is an intermediate in the conversion of strontium sulfate, the main strontium ore called

celestite Celestine (the IMA-accepted name) or celestite is a mineral consisting of strontium sulfate ( Sr S O). The mineral is named for its occasional delicate blue color. Celestine and the carbonate mineral strontianite are the principal sources of t ...

(or, more correctly, celestine), to other more useful compounds.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. .

Production and reactions

Strontium sulfide is produced by roasting celestine with coke at 1100–1300 °C. The sulfate is reduced, leaving the sulfide: :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.R. Ward, R. K. Osterheld, R. D. Rosenstein "Strontium Sulfide and Selenide Phosphors" Inorganic Syntheses, 1950, vol. III, pp. 11–24. 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: a mixture of strontium sulfide with either

carbon dioxide Carbon dioxide ( chemical formula ) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. In the air, carbon dioxide is t ...

gas or sodium carbonate leads to formation of a

precipitate In an aqueous solution, precipitation is the process of transforming a dissolved substance into an insoluble solid from a super-saturated solution. The solid formed is called the precipitate. In case of an inorganic chemical reaction leading ...

of strontium carbonate. :SrS + H₂O + CO₂ → SrCO₃ + H₂S :SrS + Na₂CO₃ → SrCO₃ + Na₂S Strontium nitrate can also be prepared in this way.

References

External links

Strontium Sulfide Info
American Elements Strontium compounds Sulfides Rock salt crystal structure {{inorganic-compound-stub