aniline dye

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aniline dye

[′an·əl·ən ′dī]
(organic chemistry)
A dye derived from aniline.
References in periodicals archive ?
According to one scholar, the tradition of reddish tones began in the sixteenth century with the onset of cochineal dye production: hut today these brilliant tones derive from commercial aniline dyes.
Perkin was attempting to synthesize quinine (for use against malaria) when instead his efforts yielded the first aniline dye and artificial color to be extracted from coal-tar derivatives.
Weigert facilitated Ehrlich's research on aniline dyes and stimulated his interest in pathologic anatomy.
You can't buy natural indigo at reasonable cost anymore--if at all--but aniline dyes come in all colors, and are stable, long-lasting, and relatively inexpensive.
A patch test should be performed before the semipermanent dye is applied, since about one fourth of the people who are allergic to permanent dyes are also allergic to aniline dyes that may be used in semipermanent dyes.
Later, aniline dyes were used and to a large extent replaced indigenous dyes.
Throughout the 19th century the English textile industry was transformed by a huge influx of mechanical printing and the use of aniline dyes.
Coroner Prof Paul Marks said: "The statements of facts are that although this man worked in the chemical industry and aniline dyes were used at that time, there is no evidence to support that he was working with them.
The chemicals most commonly involved include para-phenylenediamine (PPD) and other aniline dyes derived from coal tar, ammoniated mercury, lead and other toxic metals as well as the bleaching agent, peroxide.
The first aniline dyes were limited by the need to use a substance known as a mordant to fix the dye permanently to the textile fiber, a requirement that added an extra step to the dyeing process.