Triarylmethane Dye

(redirected from triphenylmethane)
Also found in: Dictionary, Medical, Wikipedia.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Triarylmethane Dye


any of several basic and acidic dyes that are derivatives of triarylmethane, HC(Ar)3. Of the greatest importance are basic triarylmethane dyes, with the general formula

The effect of substituents on the color of triarylmethane dyes is shown in Table 1.

Table 1. Effect of substituents on the color of triarylmethane dyes

Triarylmethane dyes yield colorless leuco compounds under the action of reducing agents and colorless carbinol compounds under the action of bases.

Basic triarylmethane dyes are used for dyeing paper, leather, and plastics, as well as in the manufacture of writing, printing, and stamping inks. Some triarylmethane dyes are used for dyeing polyacrylonitrile fibers. Acidic triarylmethane dyes containing at least two S03H groups are used to a limited extent in dyeing wool and silk. Dyes that contain hydroxyl groups—for example, phe-nolphthalein and fuchsin—instead of amino groups are used as chemical indicators.

Triarylmethane dyes are prepared by the condensation of aldehydes, ketones, acid anhydrides, or acid chlorides with aromatic amines or phenols (naphthols).


Stepanov, B. I. Vvedenie v khimiiu i tekhnologiiu organicheski kh krasilelei. Moscow, 1971.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Biodecolorization of members of triphenylmethanes and azo groups of dyes.
Biodecolorization of azo, anthraquinonic and triphenylmethane dyes by white-rot fungi and a laccase secreting engineered strain.
Neural network modeling of biotreatment of triphenylmethane dye solution by a green macroalgae, Chemical Engineering Research and Design 89: 172-178.
Malachite green (MG) dye is a water-soluble dye belonging to triphenylmethane family that has been widely used as antifungal therapeutic agent in aquaculture, commercial fish hatchery and animal husbandry as well as antiseptic and fungicidal for human [16].
In a comprehensive multicenter study of blood splashes on 600 facial shields, Endo et al found that visual examination alone detected blood spatters on 50.5% of all facial shields; however, when leucomalachite green, a triphenylmethane dye used for detecting blood in criminal forensic science, was used to detect spatters, the detection rate rose to 66%.
Some studies also show that yeast species act as a promising dye adsorbent and are able to uptake higher dye concentration (Safari'kova' et al., 2005), while Galactomyces geotrichum MTCC can decolorize triphenylmethane, azo and reactive high exhaust textile dyes (Jadhav et al., 2008a).
A safe, blood-brain barrier permeable triphenylmethane dye inhibits amyloid-[sz] neurotoxicity by generating nontoxic aggregates.
The dyes used in the staining process include triphenylmethane and azo-dyes such.
They are: Erythrosin included in the class of xanthene dyes; Blue indigotine included in the indigotin class of dyes, Patent Blue V, Fast Green and Brilliant Blue in class of triphenylmethane dyes, Bordeaux Red, Ponceau 4R, Red 40, Azorubine, Tartrazine Yellow and Sunset Yellow, included in the class of azo dyes (POLONIO; PERES, 2009).
BBG is a triphenylmethane dye in the Coomassie dye family, commonly used for protein staining in biochemical analysis (22-24).