Collect. Czech. Chem. Commun. 1982, 47, 2466-2477

Oxidation of galactose by manganese(III) sulphate

Jiří Barek, Antonín Berka and Alena Pokorná-Hladíková

Department of Analytical Chemistry, Charles University, 128 40 Prague 2


Galactose was found to be oxidized by manganese(III) sulphate according to the equation OHC-(CHOH)4-CH2OH + 10 Mn3+ + 5 H2O → 5 HCOOH + CH2O + 10 Mn2+ + 10 H+. The kinetics of the reaction was studied and its mechanism suggested. A procedure was worked out for indirect titrimetric determination of galactose based on its oxidation with excess manganese(III) sulphate and potentiometric retitration of the unreacted reagent with iron(II) sulphate.