Knowra Barium sulfide Barium sulfide Barium sulfide (BaS) is an ionic compound of barium and sulfur. It is a precursor to other barium compounds and can produce luminescence when activated by impurities.
Rock-salt structure : A cubic crystal structure in which each ion is surrounded by six oppositely charged ions. BaS commonly crystallizes in this structure, with barium and sulfide ions in sixfold coordination.
Barium carbonate : An inorganic barium salt with formula BaCO₃, used in ceramics, glass, and chemical manufacturing. Carbonation of BaS solutions is a route to this widely used barium compound.
Barium : A soft, silvery alkaline-earth metal with atomic number 56. Barium supplies the Ba²⁺ cation in BaS.
Zinc sulfide : An inorganic compound with formula ZnS, used in phosphors and other materials. ZnS is a more familiar sulfide phosphor and differs from BaS in cation and material properties.
Ionic bond : An electrostatic attraction between oppositely charged ions formed through electron transfer. The attraction between Ba²⁺ and S²⁻ accounts for BaS's ionic solid structure.
Barium sulfate : A highly insoluble barium salt with formula BaSO₄, used in medical imaging and industrial materials. Reduction of BaSO₄ is a principal industrial route to BaS.
Sulfur : A yellow nonmetal with atomic number 16 that forms sulfide ions in ionic compounds. Sulfur supplies the sulfide component of BaS.
Calcium sulfide : An ionic compound with formula CaS, formed from calcium and sulfur. CaS is a neighboring Group 2 sulfide with different solubility and industrial behavior.
Photoluminescence : Light emission from a substance after it absorbs photons. Some BaS materials emit light after excitation, particularly when doped with activator ions.
Strontium sulfide : An ionic compound with formula SrS, used as a phosphor host and chemical intermediate. SrS is a related alkaline-earth sulfide with similar uses but a different metal ion.
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