137-50-8

Basic information

• Product Name: 1,3-PHENYLENEDIAMINE-4,6-DISULFONIC ACID
• Synonyms: 3-Benzenedisulfonicacid,4,6-diamino-1;4,6-diamino-3-benzenedisulfonicacid;4,6-Diaminobenzene-1,3-disulfonicacid;m-Phenyldiaminodisulfonicacid;M-Phenylenediamine-4,6-disulfonicacid;1,3-PHENYLENEDIAMINE-4,6-DISULFONIC ACID;META PHENYLENE DIAMINE-4,6-DISULFONIC ACID;4,6-diaminobenzene-1,3-disulphonic acid
• CAS NO: 137-50-8
• Molecular Formula: C₆H₈N₂O₆S₂
• Molecular Weight: 268.27
• EINECS: 205-298-8
• Mol File: 137-50-8.mol
• Article Data: 7

Chemical Properties

• Boiling Point: 540.02℃[at 101 325 Pa]
• Appearance: /
• Density: 1.922 g/cm³
• Vapor Pressure: 0Pa at 25℃
• Refractive Index: 1.712
• Storage Temp.: 2-8°C
• PKA: -0.57±0.50(Predicted)
• Water Solubility: 1000g/L at 25℃
• CAS DataBase Reference: 1,3-PHENYLENEDIAMINE-4,6-DISULFONIC ACID(CAS DataBase Reference)
• NIST Chemistry Reference: 1,3-PHENYLENEDIAMINE-4,6-DISULFONIC ACID(137-50-8)
• EPA Substance Registry System: 1,3-PHENYLENEDIAMINE-4,6-DISULFONIC ACID(137-50-8)

Safety Data

• Hazardous Substances Data: 137-50-8(Hazardous Substances Data)

Usage

Uses

4,6-Disulfo-1,3-diaminobenzene can be used to treat neurodegenerative disorders

Flammability and Explosibility

Notclassified

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

Upstream product

• 7664-93-9 sulfuric acid 
• 108-45-2 m-phenylenediamine 

Relevant articles and documents

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 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.

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.