Acid Dyes

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Related to Acid Dyes: Basic Dyes, Reactive dyes

Acid Dyes


water-soluble dyes of anionic character; predominantly the anthraquinone and azo dyes.

Acid dyes are widely used in coloring wool, natural silk, polyamide fiber, leather, fur, paper, and wood. They are not adsorbed by cellulose fibers.


Androsov, V. F., and L. M. Golomb. Sinteticheskie krasiteli ν tekstil’noi promyshlennosti. Moscow, 1968.
References in periodicals archive ?
b, Similar sized block of normal human breast tissue, which has been fixed, cleared, and stained with the nucleic acid dye SYTOX Green (low power).
The main objective of this work was to evaluate the ability to remove acid dyes using soybean meal as adsorbant, by determining efficiency using spectroscopy in the visible spectrum.
Titanium dioxide-mediated photocatalytic degradation of acid dye and decolourisation of textile dye waste containing acid dyes have been studied (Kanmani, 2003; Reddy, 2005).
The result shows that AHAMAA is able to decrease color of the textile wastewater containing reactive, direct, and acid dyes.
The triple dye mixture is made with a blue acid dye, a red direct dye and a yellow disperse dye (the terms 'acid', 'direct' and 'disperse' will be explained later).
The Ministry of Environment and Forests is imposing a ban on the manufacture in India of the 190 prohibited dyes, including 84 direct dyes, 30 acid dyes, 16 disperse dyes, 11 basic dyes, 11 azoic dyes and 38 pigments.
However, the additives in the modified finishes have a positive charge, which attracts the acid dyes now used to color wool and nylon.
McKay, Adsorption of Acid Dyes on Chitosan Equilibrium Isotherm Analyses, Process Biochem.
Wendelin Marie Rich[8] studied ability of UV absorber to reduce fading of nylon coloured with acid dyes and concluded UV absorbers were more effective at reducing colour change on lighter shades.
They are also less effective especially for the removal of brightly coloured water-soluble reactive and acid dyes because these dyes show resistance to many chemicals, oxidizing agents and light [47].
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