acid dye

noun

, Chemistry.

any of a class of dyes containing one or more acidic groups, as the sulfo group: used in acid solution chiefly for dyeing wool and silk.

acid dye

a dye in which the chromophore is part of a negative ion usually applied from an acidic solution

First recorded in 1885–90

This is effected by the judicious addition of a suitable acid dye to the pulp already coloured with the basic dye.

The goods may advantageously be bottomed with an acid dye or a dye-wood extract, and then finished with basic dyes.

The use of acid dye-stuffs is restricted to cases where the silk alone is to be shaded.

For shading the silk all acid dye-stuffs can be used which have been mentioned in the foregoing tables.

If there is a precipitate there is a basic dye, if not, an acid dye.

April 18, 2024petrichor

[pet-ri-kawr]

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