Names | |
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IUPAC name
d-Gluconic acid
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Systematic IUPAC name
(2R,3S,4R,5R)-2,3,4,5,6-Pentahydroxyhexanoic acid | |
Other names
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Identifiers | |
3D model (JSmol)
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ChEBI | |
ChEMBL | |
ChemSpider | |
ECHA InfoCard | 100.007.639 |
EC Number |
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E number | E574 (acidity regulators, ...) |
PubChem CID
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UNII |
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CompTox Dashboard (EPA)
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Properties | |
C6H12O7 | |
Molar mass | 196.155 g·mol−1 |
Appearance | Colorless crystals |
Melting point | 131 °C (268 °F; 404 K) |
316 g/L[1] | |
Acidity (pKa) | 3.86[2] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Gluconic acid is an organic compound with molecular formula C6H12O7 and condensed structural formula HOCH2(CHOH)4CO2H. A white solid, it forms the gluconate anion in neutral aqueous solution. The salts of gluconic acid are known as "gluconates". Gluconic acid, gluconate salts, and gluconate esters occur widely in nature because such species arise from the oxidation of glucose. Some drugs are injected in the form of gluconates.