Potassium sorbate
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Potassium sorbate is the potassium salt of sorbic acid, chemical formula CH3CH=CH−CH=CH−CO2K. It is a white salt that is very soluble in water (58.2% at 20 °C). It is primarily used as a food preservative (E number 202).[4] Potassium sorbate is effective in a variety of applications including food, wine, and personal-care products. While sorbic acid occurs naturally in rowan and hippophae berries, virtually all of the world's supply of sorbic acid, from which potassium sorbate is derived, is manufactured synthetically.
Quick Facts Names, Identifiers ...
Names | |
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Preferred IUPAC name
Potassium (2E,4E)-hexa-2,4-dienoate | |
Other names
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Identifiers | |
3D model (JSmol) |
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ChEBI | |
ChemSpider |
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ECHA InfoCard | 100.042.145 |
E number | E202 (preservatives) |
KEGG |
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PubChem CID |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
C6H7KO2 | |
Molar mass | 150.218 g·mol−1 |
Appearance | White crystals |
Odor | Yes |
Density | 1.363 g/cm3 |
Melting point | 270 °C (518 °F; 543 K) decomposes |
58.5 g/100 mL (100 °C) | |
Solubility in other solvents |
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Hazards | |
NFPA 704 (fire diamond) | |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose) |
4920 mg/kg (oral, rat)[3] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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