Calcium bisulfite
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(Redirected from Calcium hydrogen sulfite)
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Names | |
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IUPAC name
Calcium hydrogen sulfite
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Other names
Calcium bisulphite
E227 |
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Identifiers | |
13780-03-5 | |
ChemSpider | 24475 |
Jmol 3D model | Interactive image |
PubChem | 26268 |
RTECS number | EV9294500 |
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Properties | |
Ca(HSO3)2 | |
Molar mass | 202.22 g/mol |
Vapor pressure | {{{value}}} |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references | |
Calcium bisulfite (calcium bisulphite) is an inorganic compound which is the salt of a calcium cation and a bisulfite anion. It may be prepared by reacting lime with an excess of sulfurous acid[citation needed], essentially a mixture of sulfur dioxide and water. It is a weak reducing agent, as is sulfur dioxide, sulfites, and any other compound containing sulfur in the +4 oxidation state. As a food additive it is used as a preservative under the E number E227. Calcium bisulfite is an acid salt and behaves like an acid in aqueous solution.
See also
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- Food additives
- Calcium compounds
- Bisulfites
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