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The analysis of indigoid dyes by mass spectrometry
Author(s) -
McGovern P E,
Lazar J,
Michel R H
Publication year - 1990
Publication title -
journal of the society of dyers and colourists
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 0037-9859
DOI - 10.1111/j.1478-4408.1990.tb01225.x
Subject(s) - chemistry , mass spectrometry , solvent , combinatorial chemistry , chromatography , organic chemistry
High–resolution mass spectrometry provides an expeditious technique for positively identifying indigoid dyes of molluscan origin. Indigoids on modern and ancient textile fibres, as well as indigoid mixtures produced by reactions, are discussed. Steam treatment of the fibre or isolation of the dye by solvent extraction permits the analysis by mass spectrometry of dyes which bind more tightly to fibres, such as 6, 6′‐dibromoindigotin (C. I. 75800, Natural Vat Dye). The demonstration of the stepwise photolytic denomination of the leuco base of 6, 6′‐dibromoindigotin may be of more far‐reaching significance in distinguishing between natural and intentional mixtures of indigotin and its dibromo derivative.