Calmagite dye oxidation using in situ generated hydrogen peroxide catalysed by manganese(II) ions.
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.
Sheriff
Tippu S
TS
Inorganic Chemistry Research Laboratories, School of Biological and Chemical Sciences, Queen Mary, University of London, London, UK E1 4NS. t.s.sheriff@qmul.ac.uk
Cope
Steven
S
Ekwegh
Mmaezi
M
D014013:1,2-Dihydroxybenzene-3,5-Disulfonic Acid Disodium Salt / Q000737:chemistry; D001391:Azo Compounds / Q000737:chemistry*; D002384:Catalysis; D004396:Coloring Agents / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000138:chemical synthesis* / Q000737:chemistry; D007477:Ions / Q000737:chemistry; D008024:Ligands; D008345:Manganese / Q000737:chemistry*; D015394:Molecular Structure; D010084:Oxidation-Reduction; D012996:Solutions / Q000737:chemistry; D013997:Time Factors; D014867:Water / Q000737:chemistry
D001391:Azo Compounds; D004396:Coloring Agents; D007477:Ions; D008024:Ligands; D012996:Solutions; D014867:Water; C006876:calmagite; D008345:Manganese; D014013:1,2-Dihydroxybenzene-3,5-Disulfonic Acid Disodium Salt; D006861:Hydrogen Peroxide