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Name:  Gluconic acid

Synonyms:  D-Gluconic acid monopotassium salt; Gluconic acid potassium salt

Molecular Formula:C6H11KO7

Molecular Weight:234.24

CAS Registry Number:299-27-4

EINECS:  206-074-2

Gluconic acid is an organic compound with molecular formula C6H12O7 and condensed structural formula HOCH2(CHOH)4COOH. In aqueous solution at neutral pH, gluconic acid forms the gluconate ion. The salts of gluconic acid are known as "gluconates". Gluconic acid and gluconate salts occur widely in nature because such species arise from the oxidation of glucose. Gluconate esters can also be formed, such as quinine gluconate which is used for intramuscular injection in the treatment of malaria. Gluconic acid occurs naturally in fruit, honey, kombucha tea, and wine. As a food additive (E574), it is an acidity regulator. It is also used in cleaning products where it dissolves mineral deposits especially in alkaline solution. The gluconate anion chelates Ca2+, Fe2+, Al3+, and other heavy metals. Calcium gluconate, in the form of a gel, is used to treat burns from hydrofluoric acid.
Speciafication

Product name
Gluconic acid
Molar mass 196 g/mol
Appearance colorless crystals
Solubility in water good
Acidity (pKa) 3.86
Melting point 172-173 ºC

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