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In a reactive dye, a chromophore (an atom or group whose presence is responsible for the colour of a compound) contains a substituent that reacts with the substrate. Reactive dyes have good fastness properties owing to the covalent bonding that occurs during dyeing. Reactive dyeing is the most important method for coloring cellulose fibers.
Reactive red 120 292775 diazo 61951-82-4: Remazol Brilliant Blue R: Reactive blue 19 61200 anthraquinone 2580-78-1: Rhodamine 123: rhodamine 62669-70-9: Rhodamine 6G: Basic red 1 45160 rhodamine 989-38-8: Rhodamine B: Basic violet 10 45170 rhodamine 81-88-9: Rhamnazin: 75700 natural 552-54-5: Rhamnocitrin Kaempferol 7-O-methyl ether Natural ...
If the vinyl sulfone group is introduced via a primary or secondary aliphatic amine, this is performed again by condensation with a halotriazine compound. An example is 2-[2-(2-chlorethylsulfonyl)ethoxy]ethanamine used in bifunctional reactive dyes in combination with a monofluoro or monochlorotriazine hook. [3]
reactive dye Reactive dyes are a class of synthetic dyes that first appeared commercially in 1956, after their invention in 1954 by Rattee and Stephens at the Imperial Chemical Industries Dyestuffs Division site in the United Kingdom. Reactive dyes are used primarily to dye natural fibers and cellulose fibers such as rayon. [39] resist dyeing
By replacing the bromine substituent with an aliphatic or aromatic amine, vibrant blue dyes are obtained. [8] For example, bromamic acid can be condensed with 3-(2-hydroxyethylsulfonyl)-aniline (7) to form the vibrant blue dye (8) (oxysulfone blue), from which the reactive dye C.I. Reactive Blue 19 is obtained after esterification with sulfuric ...
The FDA has banned Red Dye No. 3 dye from food and ingested drug products. Here are the food products containing Red 3 and how the ban affects you. Red Dye 3 Just Got Banned.