Premium
Reduction of Dispersed Indigo Dye by Indirect Electrolysis
Author(s) -
Bechtold Thomas,
Burtscher Eduard,
Amann Angelika,
Bobleter Ortwin
Publication year - 1992
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199210681
Subject(s) - indigo , triethanolamine , reducing agent , electrolysis , chemistry , aqueous solution , inorganic chemistry , chemical engineering , pulp and paper industry , environmental chemistry , organic chemistry , electrode , analytical chemistry (journal) , art , engineering , electrolyte , visual arts
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 Na 2 S 2 O 4 cannot be recovered and the process baths cannot be recycled, this new “rechargeable” reducing agent is of great environmental interest.