Potassium bisulfate
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| Potassium bisulfate | |
|---|---|
| Image:Potassium bisulfate.png | |
| Other names | Potassium hydrogen sulfate; potassium acid sulfate |
| Identifiers | |
| CAS number | |
| Properties | |
| Molecular formula | KHSO4 |
| Molar mass | 136.17 g/mol |
| Density | 2.245 g/cm3 |
| Melting point |
197 °C |
| Boiling point |
Dec. > 300 °C |
| Solubility in water | 490 g/L |
| Hazards | |
| MSDS | External MSDS |
| EU classification | Corrosive (C) |
| R-phrases | R34 R36 R37 R38 |
| S-phrases | S26 S36 S37 S39 S45 |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references | |
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Potassium bisulfate is the potassium salt of bisulfate anion, with the molecular formula KHSO4. This compound is commonly used in the conversion of tartrates to bitartrates in wine. Potassium bisulfate is also used as a disintegrating agent in analytical chemistry.
A solution of potassium bisulfate behaves as if the two related compounds (K2SO4 and H2SO4) were side by side uncombined. Adding ethanol to a solution of potassium bisulfate precipitates out sulfate.
See also
References
- Merck Index of Chemicals and Drugs, 14th ed.
hu:Kálium-biszulfát nl:Kaliumwaterstofsulfaat ja:硫酸水素カリウム
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