Barium sulfide
Barium sulfide is the inorganic compound with the formula BaS. BaS is the barium compound produced on the largest scale. It is an important precursor to other barium compounds including BaCO3 and the pigment lithopone, ZnS/BaSO4. Like other chalcogenides of the alkaline earth metals, BaS is a short wavelength emitter for electronic displays. It is colorless, although like many sulfides, it is commonly obtained in impure colored forms.
| Identifiers | |
|---|---|
3D model (JSmol) |
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| ChEBI | |
| ChemSpider | |
| ECHA InfoCard | 100.040.180 |
| EC Number |
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| 13627 | |
PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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SMILES
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| Properties | |
| BaS | |
| Molar mass | 169.39 g/mol |
| Appearance | white solid |
| Density | 4.25 g/cm3 |
| Melting point | 2,235 °C (4,055 °F; 2,508 K) |
| Boiling point | decomposes |
| 2.88 g/100 mL (0 °C) 7.68 g/100 mL (20 °C) 60.3 g/100 mL (100 °C) (reacts) | |
| Solubility | insoluble in alcohol |
Refractive index (nD) |
2.155 |
| Structure | |
| Halite (cubic), cF8 | |
Space group |
Fm3m, No. 225 |
| Octahedral (Ba2+); octahedral (S2−) | |
| Hazards | |
| GHS labelling: | |
| Warning | |
| H315, H319, H335, H400 | |
| P261, P264, P271, P273, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P391, P403+P233, P405, P501 | |
| NFPA 704 (fire diamond) |
2
3
2 |
| Lethal dose or concentration (LD, LC): | |
LD50 (median dose) |
226 mg/kg humans |
| Related compounds | |
Other anions |
Barium oxide |
Other cations |
Magnesium sulfide Calcium sulfide Strontium sulfide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
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