Potassium ascorbate is a compound with formula KC6H7O6. It is the potassium saltofascorbic acid (vitamin C) and a mineral ascorbate. As a food additive, it has E number E303, INS number 303. Although it is not a permitted food additive in the UK, USA and the EU,[2][3] it is approved for use in Australia and New Zealand.[4] According to some studies, it has shown a strong antioxidant activity and antitumoral properties.[5][6][7]
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| Names | |
|---|---|
| Preferred IUPAC name
Potassium (2R)-2-[(1S)-1,2-dihydroxyethyl]-4-hydroxy-5-oxo-2,5-dihydrofuran-3-olate | |
| Other names
Monopotassium ascorbate; Potassium L-ascorbate | |
| Identifiers | |
3D model (JSmol) |
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| ECHA InfoCard | 100.035.832 
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| E number | E303 (antioxidants, ...) |
PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| C6H7KO6 | |
| Molar mass | 214.214 g·mol−1 |
| 98g/100mL[1] | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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