anthraquinone dye

any of the class of dyes derived from anthraquinone, used for dyeing textiles, esp. cotton, rayon, and silk.

* * *

      any of a group of organic dyes having molecular structures based upon that of anthraquinone. The group is subdivided according to the methods best suited to their application to various fibres.

      Anthraquinone acid dyes contain sulfonic acid groups that render them soluble in water and substantive for wool and silk; that is, they have an affinity for these fibres without the aid of auxiliary binding agents (mordants).

      Anthraquinone disperse dyes lack the water-solubilizing groups of the acid dyes, but they are adsorbed by hydrophobic fibres such as nylon or acetate rayon with the aid of soap or other agents that keep the dye suspended in the application bath.

      In several mordant dyes (mordant dye), the anthraquinone structure contains hydroxyl groups that participate in binding the dye to fibres such as cotton, wool, or silk that have been previously impregnated with the oxide of a metal such as aluminum, iron, tin, or chromium.

      The anthraquinone vat dyes, valued for their brilliant colours and fastness to light and washing, are insoluble in water but become soluble upon treatment with a reducing agent, usually sodium hydrosulfite. The soluble vat or leuco form is adsorbed by the fibre and is then converted back to the insoluble form.

* * *


Universalium. 2010.

Look at other dictionaries:

  • anthraquinone dye — antrachinoninis dažiklis statusas T sritis chemija apibrėžtis Antrachinono ir benzantrono darinys. atitikmenys: angl. anthraquinone dye rus. антрахиноновый краситель …   Chemijos terminų aiškinamasis žodynas

  • anthraquinone dye — noun : any of a large class of dyes (as mordant, acid, acetate, and vat dyes) derived from anthraquinone and noted for their fastness see dye table I * * * Chem. any of the class of dyes derived from anthraquinone, used for dyeing textiles, esp.… …   Useful english dictionary

  • dye — dyable, dyeable, adj. dyer, n. /duy/, n., v., dyed, dyeing. n. 1. a coloring material or matter. 2. a liquid containing coloring matter, for imparting a particular hue to cloth, paper, etc. 3. color or hue, esp. as produced by dyeing. 4. of the… …   Universalium

  • anthraquinone — [an΄thrə kwi nōn′, an΄thrəkwin′ōn΄] n. [ ANTHRA(CENE) + QUINONE] a yellow crystalline ketone, C6H4 (CO) 2C6H4, produced from anthracene by oxidation or the reaction of phthalic anhydride with benzene: it is used in the manufacture of certain dyes …   English World dictionary

  • Anthraquinone — 9,10 Anthraquinone …   Wikipedia

  • Dye — For other uses, see Dye (disambiguation). Yarn drying after being dyed in the early American tradition, at Conner Prairie living history museum. A dye is a colored substance that has an affinity to the substrate to which it …   Wikipedia

  • anthraquinone — an·thra·qui·none .an(t) thrə kwin ōn, kwin .ōn n a yellow crystalline ketone C14H8O2 often derived from anthracene and used esp. in the manufacture of dyes * * * an·thra·quin·one (an″thrə kwinґōn) 1. the 9, 10 quinone derivative… …   Medical dictionary

  • Acid dye — is a member of a class of dye that is applied from an acidic solution. In the home or art studio, the acid used in the dyebath is often vinegar (acetic acid) or citric acid. The uptake rate of the dye is controlled with the use of sodium chloride …   Wikipedia

  • Natural dye — Skeins of wool colored with natural plant dyes. Natural dyes are dyes or colorants derived from plants, invertebrates, or minerals. The majority of natural dyes are vegetable dyes from plant sources – roots, berries, bark, leaves, and …   Wikipedia

  • vat dye — noun a water insoluble dye that is applied by reducing the dye to an alkaline form, applying the dye, then regenerating the insoluble dye by oxidation in the material; used for dyeing cotton • Syn: ↑vat color • Hypernyms: ↑dye, ↑dyestuff * * *… …   Useful english dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.