Calmagite dye oxidation using in situ generated hydrogen peroxide catalysed by manganese(II) ions

Dalton Trans. 2007 Nov 28:(44):5119-22. doi: 10.1039/b711143f. Epub 2007 Oct 4.

Abstract

Hydrogen peroxide (H(2)O(2)) generated from the manganese(II) catalysed reduction of dioxygen has been shown to efficiently oxidize Calmagite (3-hydroxy-4-(2-hydroxy-5-methylphenylazo)naphthalene-1-sulfonic acid) in aqueous solution at pH 8.0 and 20 +/- 1 degrees C with de-protonated Tiron (1,2-dihydroxybenzene-3,5-disulfonate, disodium salt) acting as an essential co-ligand.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • 1,2-Dihydroxybenzene-3,5-Disulfonic Acid Disodium Salt / chemistry
  • Azo Compounds / chemistry*
  • Catalysis
  • Coloring Agents / chemistry*
  • Hydrogen Peroxide / chemical synthesis*
  • Hydrogen Peroxide / chemistry
  • Ions / chemistry
  • Ligands
  • Manganese / chemistry*
  • Molecular Structure
  • Oxidation-Reduction
  • Solutions / chemistry
  • Time Factors
  • Water / chemistry

Substances

  • Azo Compounds
  • Coloring Agents
  • Ions
  • Ligands
  • Solutions
  • Water
  • calmagite
  • Manganese
  • 1,2-Dihydroxybenzene-3,5-Disulfonic Acid Disodium Salt
  • Hydrogen Peroxide