Reduction of Dispersed Indigo Dye by Indirect Electrolysis

Reduction of Dispersed Indigo Dye by Indirect Electrolysis

Triethanolamine–iron complexes mediate the electrolysis of dispersed indigo (1) in aqueous alkaline solution to the leuko compound, which is soluble in this medium. This is a central step in the application of indigo as a textile dye. Since conventional reducing agents such as Na2S2O4 cannot be reco...

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Veröffentlicht in:Angewandte Chemie (International ed.) 1992-08, Vol.31 (8), p.1068-1069
Hauptverfasser: Bechtold, Thomas, Burtscher, Eduard, Amann, Angelika, Bobleter, Ortwin
Format: Artikel
Sprache:eng
Schlagworte:
Chemistry
Electrochemistry
Exact sciences and technology
General and physical chemistry
Kinetics and mechanism of reactions
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Beschreibung
Zusammenfassung:Triethanolamine–iron complexes mediate the electrolysis of dispersed indigo (1) in aqueous alkaline solution to the leuko compound, which is soluble in this medium. This is a central step in the application of indigo as a textile dye. Since conventional reducing agents such as Na2S2O4 cannot be recovered and the process baths cannot be recycled, this new “rechargeable” reducing agent is of great environmental interest.
ISSN:0570-0833
1521-3773
DOI:10.1002/anie.199210681