mordant

(redirected from mordants)
Also found in: Dictionary, Thesaurus, Encyclopedia.

mordant

 [mor´dant]
1. a substance capable of intensifying or deepening the reaction of a specimen to a stain.
2. to subject to the action of a mordant before staining.

mor·dant

(mōr'dant),
1. A substance capable of combining with a dye and the material to be dyed, thereby increasing the affinity or binding of the dye; for example, alum, a mordant commonly used to promote staining with hematoxylin.
2. To treat with a mordant.
[L. mordeo, to bite]

mordant

adjective Referring to an astringent chemical; caustic, corrosive.

noun A chemical used to set stains in tissue.

Mordants
Sodium chloride, tannic acid, alum, urine, chrome alum; Bouin’s solution can also be used as a mordant.

mor·dant

(mōr'dănt)
1. A substance capable of combining with a dye and the material to be dyed, thereby increasing the affinity or binding of the dye.
2. To treat with a mordant.
[L. mordeo, to bite]
References in periodicals archive ?
Vinegar can be used as both a mordant and a modifier.
Dyeing is such a beautiful way to see nature and chemistry in action--the difference the nature of fibers makes; the difference a bit of metal mordant makes; the way some dyes strike enthusiastically but others need overnight soaking.
The washed cotton fabric was treated with chemical mordant i.e.
It can be observed that directly dyed sample and those premordanted with natural mordants exhibit good to excellent rubbing and perspiration fastness and good to very good light fastness.
After fermentation madder roots and mordant are added to the suspension at ambient conditions.
For obtaining shades with acceptable light, wash and rubbing fastness, cotton fabrics can be padded with low concentration of mordant and natural dyes [5].
Myrobalan is also used for dyeing; its yellow colour is due to the tannins but also to flavonoid colorants (mostly 3'-methoxy quercetin and 3',4'-dimethoxy quercetin), (6) and its hydrolysable tannins combine with iron mordant to give black.
Cette tendance que nous avons deja assuree signifie une recuperation des materiaux et des procedes du passe, -etant donne qu'en plus des mordants elabores avec des sels et sulfates- concerne aussi a d'autres produits et procedures, telles par exemple: nettoyer la plaque tintee avec de l'huile et du savon, et la degraisser avec du sel et du vinaigre ou avec de la poudre de talc melange avec de l'eau entre d'autres.
Enzymatic Natural Dyeing of Cotton and Silk Fabrics Without Metal Mordants, Journal of Cleaner Production, 15: 1441-1450.
Fluka)) were mixed as a concentrated solution with the addition of mordant (3% and 5%) to give a final stain concentration of 30 g [L.sup.-1] and 50 g [L.sup.-1] mordant (Guzel and Akgerman 2000).
Black Walnut--Black walnut is high in tannin which acts as a natural mordant. Use fresh black walnut hulls for best results.