Reactive dyes

A dye whose chemically active radical groups react chemically with fibers is named as Reactive dyes, or reactive dyes. Invented by the British company, Imperial Chemical Industries, first in 1956, most of the Reactive dyes dissolve in water, and the molecular structure includes parent dyes and active groups. The general structure can be represented by W-D-B-Re where D is a chromogen; B is an active group and a chromogenic coupling group; Re is an active group; W is an aqueous solution. Parent dyes include dyes with the structural types as azo, anthraquinone, phthalocyanine, trimethoprim and so on, and active groups includes types of triazine, vinylsulfone, quinoxaline, pyrimidine and acrylamide. Among them, output of triazine and vinylsulfone Reactive dyes are the largest such as reactive brilliant red X-B and reactive brilliant Orange KN-4R.

It contains groups that can react with fiber in molecule of Reactive dyes. Chemical reactions occurred between dyes and fibers during the procedure of dyeing and generated new covalent bonds, thus greatly improving the color fastness, especially wet fastness. Reactive Dyes, applied for a variety of fibers such as cotton, linen, rayon, wool, silk and blended fabric for dyeing and printing, are easy to use, and own bright color and the chromatography is more complete with lower cost. When dyeing, it is accompanied by hydrolysis of the Reactive dyes. Thus, in addition to the dye, solid color, there is post-processing stage in order to fully wash hydrolyzed dyes. Dye fixing rate is generally no more than 70% and to improve it, there occurs Reactive dyes with a composite activity groups (molecules containing two or more active groups) in recent years, whose fixation rate is of 85% to 95%.

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Structure Chemical Name CAS MF
REACTIVE BLUE 4 REACTIVE BLUE 4 13324-20-4 C23H14Cl2N6O8S2
CIBACRON BRILLIANT YELLOW 3G-P CIBACRON BRILLIANT YELLOW 3G-P 50662-99-2 C25H15Cl3N9Na3O10S3
REACTIVE BLUE 19 REACTIVE BLUE 19 2580-78-1 C22H19N2NaO11S3
PROCION BLUE H-5R PROCION BLUE H-5R 12236-84-9 C29H14ClN7O14S4.Cu.4Na
Reactive Red 15 Reactive Red 15 12238-01-6 C25H14ClN7O13S4.4Na
trisodium 2-[[6-[(4-amino-6-chloro-1,3,5-triazin-2-yl)methylamino]-1-hydroxy-3-sulphonato-2-naphthyl]azo]naphthalene-1,5-disulphonate trisodium 2-[[6-[(4-amino-6-chloro-1,3,5-triazin-2-yl)methylamino]-1-hydroxy-3-sulphonato-2-naphthyl]azo]naphthalene-1,5-disulphonate 70616-89-6 C24H19ClN7NaO10S3
Reactive Brown 2 Reactive Brown 2 12236-93-0 C31H20ClN9Na4O12S4
Reactive Blue 74 Reactive Blue 74 12677-16-6 C28H26ClN6NaO9S2
Reactive Orange 5 Reactive Orange 5 70210-21-8 C26H17ClN7Na3O10S3
PROCION YELLOW H-E3G PROCION YELLOW H-E3G 59112-78-6 C52H34Cl2N18O20S6.6Na
Reactive Blue 198 Reactive Blue 198 124448-55-1 C41H30Cl4N14O14S4.4Na
REACTIVE YELLOW 86 REACTIVE YELLOW 86 61951-86-8 C18H14Cl2N8Na2O9S2
Reactive Red Brown K-B3r Reactive Red Brown K-B3r 12225-66-0 C29H20IN7Na2O12S3
disodium 2,5-dichloro-4-[4-[[5-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-2-sulphonatophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulphonate disodium 2,5-dichloro-4-[4-[[5-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-2-sulphonatophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulphonate 5089-16-7 C19H13Cl4N8NaO7S2
REACTIVE RED 120 REACTIVE RED 120 61951-82-4 C44H30Cl2N14O20S6
REACTIVE BLACK 5 REACTIVE BLACK 5 17095-24-8 C26H26N5NaO19S6
REACTIVE GREEN 19 REACTIVE GREEN 19 61931-49-5 C40H23Cl2N15Na6O19S6
Reactive Yellow 4 Reactive Yellow 4 12226-45-8 C20H15Cl2N6NaO6S2
Reactive Turquoise Blue Kn-G Reactive Turquoise Blue Kn-G 12236-86-1 C40H25CuN9O14S5
Reactive Red 24 Reactive Red 24 70210-20-7 C26H21ClN7NaO10S3
Reactive Red 180 Reactive Red 180 72828-03-6 C19H23N5O3
13 REACTIVE ORANGE 13 13 REACTIVE ORANGE 13
2-[[4-[[4-[bis(2-hydroxyethyl)amino]-6-chloro-1,3,5-triazin-2-yl]amino]phenyl]azo]-p-cresol 2-[[4-[[4-[bis(2-hydroxyethyl)amino]-6-chloro-1,3,5-triazin-2-yl]amino]phenyl]azo]-p-cresol 56275-25-3 C20H22ClN7O3
PROCION RED MX-5B PROCION RED MX-5B 17804-49-8 C19H10Cl2N6Na2O7S2
Reactive Black K-BR Reactive Black K-BR
REACTIVE BLUE 5 REACTIVE BLUE 5 16823-51-1 C29H20ClN7O11S3
Reactive Yellow 18 Reactive Yellow 18 12226-48-1 C25H16ClN9O13S4.4Na
Reactive Yellow 3 Reactive Yellow 3 6539-67-9 C21H17ClN8O7S2
Reactive Blue 222 Reactive Blue 222 93051-44-6 C37H23ClN10O22S7.6Na
Reactive Blue  49 Reactive Blue 49 12236-92-9 C32H23ClN7O11S3.3Na
Reactive Black  31 Reactive Black 31 12731-63-4 C29H20N6O17S4.4Na
Reactive Violet 8 Reactive Violet 8 12226-40-3 C20H12Cl2N6O8S2.2Na
Reactive Blue 14 Reactive Blue 14 12236-85-0
Reactive Orange 1 Reactive Orange 1 6522-74-3 C19H12Cl2N6O7S2
Reactive Violet 2 Reactive Violet 2 8063-57-8 C44H21Cl2Cu2N13Na2O23S6(-5)
Reactive Yellow X-RG Reactive Yellow X-RG
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