Barium sulfite
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| IUPAC name
Barium sulfite
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.029.193 |
PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| BaSO3 | |
| Molar mass | 217.38 g·mol−1 |
| Appearance | white monoclinic crystals |
| Density | 4.44 g/cm3 |
| Melting point | decomposes |
| 0.0011 g/100 mL | |
| Related compounds | |
Other anions
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Other cations
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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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Barium sulfite is the inorganic compound with the chemical formula BaSO3. It is a white powder that finds few applications.
Occurrence
It is an intermediate in the carbothermal reduction of barium sulfate to barium sulfide:[1]
- BaSO4 + CO → BaSO3 + CO2
It also occurs as an intermediate phase in the aqueous oxidation of BaS to BaSO4 by weathering in slag.[2]
Uses
Barium sulfite is used in the hydrolysis of dialdehyde starch by sulfurous acid yielding glyoxal and erythrose.[3] The barium sulfite complexes with the glyoxal, allowing for higher reagent concentrations without loss of yield.[3]
References
- ^ Kresse, Robert; Baudis, Ulrich; Jäger, Paul; Riechers, H. Hermann; Wagner, Heinz; Winkler, Jochen; Wolf, Hans Uwe (2007). "Barium and Barium Compounds". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a03_325.pub2. ISBN 978-3-527-30673-2.
- ^ Braithwaite, R. S. W.; Kampf, A. R.; Pritchard, R. G.; Lamb, R. P. H. (1993-06-01). "The occurrence of thiosulfates and other unstable sulfur species as natural weathering products of old smelting slags". Mineralogy and Petrology. 47 (2): 255–261. doi:10.1007/BF01161570. ISSN 1438-1168.
- ^ a b Wilham, C. A.; McGuire, T. A.; Cleve, J. W. Van; Otey, F. H.; Mehltretter, C. L. (2002-05-01). "Hydrolysis of Dialdehyde Starch. Glyoxal and Erythrose Production in Sulfurous Acid-Barium Sulfite Solutions". ACS Publications. doi:10.1021/i360001a014.