Gluconic acid

Not to be confused with Glucuronic acid or Glutaconic acid.
d-Gluconic acid
Skeletal formula of gluconic acid
Ball-and-stick model of gluconic acid
Names
IUPAC name
d-Gluconic acid
Systematic IUPAC name
(2R,3S,4R,5R)-2,3,4,5,6-Pentahydroxyhexanoic acid
Other names
  • Dextronic acid
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.007.639 Edit this at Wikidata
EC Number
  • 208-401-4
E number E574 (acidity regulators, ...)
UNII
  • InChI=1S/C6H12O7/c7-1-2(8)3(9)4(10)5(11)6(12)13/h2-5,7-11H,1H2,(H,12,13)/t2-,3-,4+,5-/m1/s1 checkY
    Key: RGHNJXZEOKUKBD-SQOUGZDYSA-N checkY
  • InChI=1/C6H12O7/c7-1-2(8)3(9)4(10)5(11)6(12)13/h2-5,7-11H,1H2,(H,12,13)/t2-,3-,4+,5-/m1/s1
    Key: RGHNJXZEOKUKBD-SQOUGZDYBY
  • O=C(O)[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO
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.

  1. ^ "D-Gluconic acid". American Chemical Society.
  2. ^ Bjerrum, J., et al. Stability Constants, Chemical Society, London, 1958.