Barium sulfite
Chemical compound
From Wikipedia, the free encyclopedia
Barium sulfite is the inorganic compound with the chemical formula BaSO3. It is a white powder that finds few applications.
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| Names | |
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| IUPAC name
Barium sulfite | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.029.193 |
PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| BaSO3 | |
| Molar mass | 217.391 g/mol |
| Appearance | white monoclinic crystals |
| Density | 4.44 g/cm3 |
| Melting point | decomposes |
| 0.0011 g/100 mL | |
| Solubility | insoluble in ethanol[1] |
| Related compounds | |
Other anions |
Barium sulfate Barium fluoride Barium chloride Barium bromide Barium iodide |
Other cations |
Calcium sulfite Magnesium sulfite |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Occurrence
It is an intermediate in the carbothermal reduction of barium sulfate to barium sulfide:[2]
- BaSO4 + CO → BaSO3 + CO2
It also occurs as an intermediate phase in the aqueous oxidation of BaS to BaSO4 by weathering in slag.[3]
Uses
Barium sulfite is used in the hydrolysis of dialdehyde starch by sulfurous acid yielding glyoxal and erythrose.[4] The barium sulfite complexes with the glyoxal, allowing for higher reagent concentrations without loss of yield.[4]
