Potassium propanoate
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(Redirected from E283)
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| Names | |
|---|---|
| Preferred IUPAC name
Potassium propanoate | |
| Other names
Potassium propionate; E283
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| Identifiers | |
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3D model (JSmol)
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| Properties | |
| C3H5KO2 | |
| Molar mass | 112.1689 g/mol |
| Appearance | Colorless crystalline platelets[1] |
| Melting point | 358 to 366 °C; 676 to 691 °F; 631 to 639 K[2] |
| soluble[1] | |
| Solubility in ethanol | soluble[1] |
| Thermochemistry | |
| Hazards | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Template:Chembox Footer/trackingTemplate:Short description
Potassium propanoate or potassium propionate is a chemical compound with the chemical formula K(C2H5COO). It is the potassium salt of propanoic acid.
Preparation
Potassium propanoate can be prepared by treating potassium carbonate with propanoic acid.[2]
Use
It is used as a food preservative and is represented by the food labeling E number E283 in Europe[4] and by the INS number 283 in Australia and New Zealand.[5]
Reactions
Decomposition takes place via ketonization, yielding the symmetric ketone (3-pentanone) and potassium carbonate:[2]
- 2K(O2CEt) → K2CO3 + Et(CO)Et
References
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- ^ a b c J. I. G. Cadogan, J. Buckingham, F. MacDonald: Dictionary of Organic Compounds: First Supplement. CRC Press, 1996, Template:ISBN
- ^ a b c d Page Module:Citation/CS1/styles.css has no content.Bui, Ly Huong; de Klerk, Arno (2014-02-13). "Thermal Behavior of Potassium C1–C12 n-Alkanoates and Its Relevance to Fischer–Tropsch". Journal of Chemical & Engineering Data. 59 (2): 400–411. doi:10.1021/je400874d. ISSN 0021-9568.
- ^ Page Module:Citation/CS1/styles.css has no content.PubChem. "Potassium propionate". pubchem.ncbi.nlm.nih.gov. Retrieved 2026-02-01.
- ^ UK Food Standards Agency: Page Module:Citation/CS1/styles.css has no content."Current EU approved additives and their E Numbers". Retrieved 2011-10-27.
- ^ Australia New Zealand Food Standards CodePage Module:Citation/CS1/styles.css has no content."Standard 1.2.4 - Labelling of ingredients". 8 September 2011. Retrieved 2011-10-27.
