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The redox behaviour of CI Sulphur Black 1 ‐ a'basis for improved understanding of sulphur dyeing
Author(s) -
Bechtold T,
Berktold F,
Turcanu A
Publication year - 2000
Publication title -
coloration technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 1472-3581
DOI - 10.1111/j.1478-4408.2000.tb00041.x
Subject(s) - redox , triethanolamine , dyeing , chemistry , potentiometric titration , sulfur , inorganic chemistry , reducing agent , chloride , titration , organic chemistry , analytical chemistry (journal) , electrode
The redox properties of Cl Sulphur Black 1 are studied by redox and potentiometric titration. The results permit a more detailed description of the dyestuff reduction at a molecular level. Dyeing experiments with selected reducing agents show that dyestuff reduction is important in order to obtain a certain colour depth. When tin(II) chloride or iron(II) triethanolamine are used as reducing agents, a maximum correlation between redox potential and observed colour depth can be derived and a redox potential for maximum dyestuff affinity can be determined.