7139-89-1

Usage

Uses

Used in Chemical Industry:
1,4-Phenylenediamine-2,5-disulfonic acid is used as a chemical intermediate for the synthesis of various compounds, including dyes, due to its aromatic amine structure and sulfonic acid properties.
Used in Dye Manufacturing:
PDSA is used as a precursor in the production of dyes, where its aromatic amine and sulfonic acid characteristics contribute to the formation of color-producing compounds.
Used in Detergent and Surfactant Production:
1,4-Phenylenediamine-2,5-disulfonic acid is utilized as a raw material in the manufacturing of detergents and surfactants, where its properties enhance the cleaning and emulsifying capabilities of these products.
Safety Considerations:
Due to its potentially hazardous nature, the handling and usage of 1,4-Phenylenediamine-2,5-disulfonic acid must adhere to established safety guidelines to ensure the protection of workers and the environment.

InChI:InChI=1/C6H8N2O6S2/c7-3-1-5(15(9,10)11)4(8)2-6(3)16(12,13)14/h1-2H,7-8H2,(H,9,10,11)(H,12,13,14)

Relevant academic research and scientific papers

Mono- and bis-azo compounds containing 6-hydroxy-3-heterocyclic onium-pyridone-2-groupings coupled to diazo components containing diazine or triazine rings

Reactive dyes of the formula STR1 where n is 1 or 2, X is a six-membered halogen-containing nitrogen heterocycle, L1, depending on n, is fluorine, chlorine, C1 -C4 -alkoxy, phenoxy, C1 -C4 -alkyl, substituted or unsubstituted phenyl or a bridge member which has one or two hydroxysulfonyl groups, D is the radical of a diazo component of the aniline or naphthalene series which has at least one hydroxysulfonyl group, L2 is hydrogen or substituted or unsubstituted C1 -C8 -alkyl, L3 is the cationic radical of an aromatic heterocycle which is linked to the pyridone ring via a nitrogen atom, and L4 is hydrogen or C1 -C4 -alkyl, with the proviso that the number of hydroxysulfonyl groups in the molecule exceeds that of the cationic groups by at least one, are useful for dyeing and printing hydroxyl- or nitrogen-containing substrates.

Triazinyl reactive dyestuffs in which triazinyl group is further substituted with a beta-chloroethylsulfonyl- or vinylsulfonylbutyrylamino moiety

Reactive dyes of the formula STR1 in which D is the radical of an organic dye of the monoazo, polyazo, metal complex azo, anthraquinone, phthalocyanine, formazan, azomethine, dioxazine, phenazine, stilbene, triphenylmethane, xanthene, thioxanthrone, nitroaryl, naphthoquinone, pyrenequinone or perylenetetracarbimide series, R is hydrogen or substituted or unsubstituted C1-4 -alkyl, X is a substituent which is detachable as an anion, B is a radical of the formula STR2 R1 and R2, independently of each other, are hydrogen or substituted or unsubstituted C1-4 -alkyl or phenyl, A is a substituted or unsubstituted aliphatic or aromatic bridge member, Y is a --CO--Z or --SO2 --Z radical, Z is an aliphatic, aromatic or heterocyclic reactive radical, and n is 1 or 2, are suitable for dyeing or printing cellulose-containing and nitrogen-containing materials and in high dyeing yield produce dyeings and prints having good fastness properties.

Reactive disazo dyestuffs having a fluorocontaining reactive group and a sulphatoethylsulphone substituent

Dyestuffs of the formula STR1 wherein B=CH=CH2 or CH2 CH2 OSO3 H, u and v=H or SO3 H, with u=v, R=Cl, Br, C1 -C4 -alkyl, C1 -C4 -alkoxy, COOH, SO3 H, NHCOCH3, SO2 CH2 CH2 OSO3 H n=0, 1 or 2 STR2 These dyestuffs are outstandingly suitable for the dyeing and printing of materials containing hydroxyl groups or amide groups, such as cellulose, wool and polyamide, and give dyeings with good wet and light fastness properties.

Reactive dyestuffs comprising a triazine moiety and a vinylsulfonyl moiety both being linked by a substituted alkylene bridge member

A reactive dye of the formula STR1 in which: F is a radical selected from the group consisting of metal-free or metal-containing monoazo or disazo dyes containing at least one --SO3 H group, anthraquinone dyes, sulfophthalocyanine dyes, formazan dyes, phenazine dyes, oxazine dyes and nitroaryl dyes, R is hydrogen, C1 -C4 alkyl which is unsubstituted or substituted with --COOH or --SO3 H, cyanoethyl, or hydroxyethyl, X is fluorine, chlorine, bromine, --SO3 H, phenylsulfonyl or C1 -C4 -alkylsulfonyl, p is 1 or 2 and A is a radical of the formula STR2 in which: Y is chlorine, bromine, fluorine, --OH, --OSO3 H, --O-acyl, --CN, --COOH, --COO--C1 -C4 -alkyl, --CONH2 or --SO2 --Z, the group designated "alk" is a straight or branched polymethylene radical having 2 to 6 carbon atoms, V is STR3 hydrogen or C1 -C4 -alkyl which is unsubstituted or substituted by C1 -C2 -alkoxy, carboxyl, sulfo, halogen or hydroxy, Z is β-halogenoethyl, vinyl or β-acetoxyethyl, or A is a radical of the formulae STR4 in all of which R' is C1-6 -alkyl or hydrogen, Z is as defined above, o is 0 to 6, and m is 2 to 6.

Triazinyl reactive dyes containing additional fiber reactive groups bound through the sulfonylalkylaminoalkylamino bridge

The invention relates to novel useful reactive dyes of the formula I STR1 in which: F is a radical selected from the group consisting of metal-free or metal-containing monoazo or disazo dyes containing at least one --SO3 H group, anthraquinone dyes, sulfophthalocyanine dyes, formazan dyes, phenazine dyes, oxanine dyes and nitroaryl dyes, R is hydrogen, C1 -C4 alkyl which is unsubstituted or substituted with --COOH or --SO3 H, cyanoethyl, or hydroxyethyl, X is fluorine, chlorine, bromine, --SO3 H, phenylsulfonyl or C1 -C4 -alkylsulfonyl, P is 1 or 2 and A is a radical of the formula STR2 in which: the groups designated "alk" are independently of each other straight or branched polymethylene radicals having 2 to 6 carbon atoms, and Z is β-halogenoethyl, vinyl, β-sulfatoethyl, β-thiosulfatoethyl or βacetoxyethyl.

Reactive disazo dyes and their use: containing two 2,4-difluoro-5-chloro-pyrimidyl residues

Reactive dyes of the formula STR1 in which M is twice-coupled 1-amino-8-hydroxynaphthalene-3,6-disulfonic acid, 1-amino-8-hydroxynaphthalene-4,6-disulfonic acid, 1-amino-8-hydroxynaphthalene-4-sulfonic acid or 2-amino-5-hydroxynaphthalene-7-sulfonic acid, A and B, independently of each other, are each sulfophenylene or sulfonaphthylene which can be further substituted, and X1 and X2 are each a 2,4-difluoro-5-chloropyrimid-6-yl radical, subject to the condition that A and B together contain at least 3 sulfo groups, are particularly suitable for dyeing and printing cellulose-containing fibre materials and produce, in high dyeing yield, dyeings and prints having good fastness properties.

Process for monoacylating water-soluble organic amino compounds

A process for the monoacylation of water-soluble organic amino compounds with 2,4,6-trifluoro-s-triazine, which comprises introducing all reactants simultaneously and continuously in the amounts necessary for the required throughput into the reaction space and removing the resultant reaction products continuously therefrom.

Triazine dyestuffs

Reactive azine dyestuffs of the formula: SPC1 Wherein Am is selected from a group consisting of anilino, di(lower alkyl)amino and N(lower alkyl)benzylamino radicals, one of Y1 and Y2 is H or SO3 H and the other is H or an alkyl or alkoxy group of 1-4 carbon atoms, One of X1 or X2 is H, SO3 H, --SO2 CH2 CH2 OSO3 H or --SO2 CH=CH2 and the other is H, an alkyl or alkoxy group of 1-4 carbon atoms, Cl or CO2 H, X3 is H, an alkyl group of 1-4 carbon atoms or SO3 H, when the dotted fused ring is present B is absent and when the dotted fused ring is absent B is H or an alkyl or alkoxy group of 1-4 carbon atoms, At least one of the pendant benzene nuclei contains a NHQ group where Q is a cellulose-reactive group except when X1 or X2 is --SO2 CH2 CH2 OSO3 H or --SO2 CH=CH2 and the dyestuff as a whole contains at least 2 sulphonic acid groups. The products are reactive dyes for cellulose which are colored in strong bright blue or reddish-blue shades of excellent fastness to washing and of a reasonable fastness to light, especially in respect of wet fading.