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A substantive dye or direct dye is a dye that adheres to its substrate, typically a textile, by non-ionic forces. Overview ... In contrast to direct dyes, ...
Direct red 10 22145 diazo 2429-70-1: Congo red: Cotton red Direct red 28 22120 diazo 573-58-0: Coomassie brilliant blue: Brilliant blue R Acid blue 83 42660 triarylmethane 6104-59-2: Cotton scarlet Acid red 73 27290 diazo 5413-75-2: Coumarin 7 Disperse yellow 82 Solvent yellow 145 Solvent yellow 185 551200 coumarin 27425-55-4: Crystal violet ...
Direct or substantive dyeing is normally carried out in a neutral or slightly alkaline dye bath, at or near boiling point, with the addition of either sodium chloride (NaCl) or sodium sulfate (Na 2 SO 4) or sodium carbonate (Na 2 CO 3). Direct dyes are used on cotton, paper, leather, wool, silk and nylon.
Also called direct dyes, substantive dyes are employed for cellulose-based textiles, which includes cotton. The dyes bind to the textile by non-electrostatic forces. In another classification, azo dyes can be classified according to the number of azo groups. Trypan blue is an example of a direct dye, used for cotton.
Direct Blue 1 is an organic compound that is one of many azo dyes. This salt is used as a substantive dye for textiles with high contents of cellulose, i.e. cotton. It is prepared by the azo coupling of the aminonaphthalene and diazotized derivative of o -dianisidine .
direct dye Same as substantive. dye Dyes are color-bearing organic compounds that can be dissolved in water or another liquid so that they will penetrate fibers. [19] dyebath A dyebath is a solution of dye and water or other liquid in which textiles are dyed. [20] dyed in the wool
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Direct blue 86 is the sodium salt of CuPc-sulfonic acid, whereas direct blue 199 is the quaternary ammonium salt of the CuPc-sulfonic acid. The quaternary ammonium salts of these sulfonic acids are used as solvent dyes because of their solubility in organic solvents , such as Solvent Blue 38 and Solvent Blue 48.