Potassium bisulfite
 | |
| Names | |
|---|---|
| IUPAC name
Potassium hydrogen sulfite | |
| Other names
Potassium bisulfite, potassium bisulphite solution, sulfurous acid, monopotassium salt, monopotassium sulfite | |
| Identifiers | |
3D model (JSmol) |
|
| ChemSpider | |
| ECHA InfoCard | 100.028.973 |
| EC Number | 231-870-1 |
| E number | E228 (preservatives) |
PubChem CID |
|
| UNII | |
| |
| |
| Properties | |
| KHSO3 | |
| Molar mass | 120.1561 g/mol |
| Appearance | White crystalline powder |
| Odor | SO2 |
| Melting point | 190 °C (374 °F; 463 K) (decomposes) |
| 49 g/100 mL (20 °C) 115 g/100 mL (100 °C) | |
| Solubility | insoluble in alcohol |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
  | |
| Infobox references | |
Potassium hydrogen sulfite or potassium bisulfite is a chemical compound with the chemical formula KHSO3. It is used during the production of alcoholic beverages as a sterilising agent. This additive is classified as E number E228 under the current EU approved food additive.[1]
Synthesis
It is made by the reaction of sulfur dioxide and potassium carbonate. The sulfur dioxide is passed through a solution of the potassium carbonate until no more carbon dioxide is given off. The solution is concentrated and then allowed to crystallize.
See also
References
This article is issued from
Wikipedia.
The text is licensed under Creative Commons - Attribution - Sharealike.
Additional terms may apply for the media files.