6357-90-0

Basic information

• Product Name: 5,8-diaminonaphthalene-2-sulfonic acid
• CAS NO: 6357-90-0
• Molecular Formula: C₁₀H₁₀N₂O₃S
• Molecular Weight: 238.263
• Mol File: 6357-90-0.mol
• Article Data: 3

Chemical Properties

• Density: 1.579g/cm³
• Refractive Index: 1.756
• CAS DataBase Reference: 5,8-diaminonaphthalene-2-sulfonic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 5,8-diaminonaphthalene-2-sulfonic acid(6357-90-0)
• EPA Substance Registry System: 5,8-diaminonaphthalene-2-sulfonic acid(6357-90-0)

Safety Data

• Hazardous Substances Data: 6357-90-0(Hazardous Substances Data)

Usage

General Description

5,8-diaminonaphthalene-2-sulfonic acid is a chemical compound with the molecular formula C10H9N2O3S. It is an organic compound with two amino groups and a sulfonic acid group attached to a naphthalene ring. This chemical is commonly used as a reagent for the spectrophotometric determination of nitrite and nitrate in water samples. It is also used as a dye intermediate in the production of acid dyes, which are widely used in the textile industry. Additionally, 5,8-diaminonaphthalene-2-sulfonic acid has been studied for its potential applications in the treatment of certain types of cancers, as well as its antimicrobial properties. 5,8-diaminonaphthalene-2-sulfonic acid is important in various industrial and research applications due to its unique chemical properties and potential biological activities.

Upstream product

• 119-79-9 5-aminonaphthalene-2-sulfonic acid 
• 100-34-5 benzene diazonium chloride 
• 85-76-7 8-acetylamino-5-amino-naphthalene-2-sulfonic acid 
• 119-28-8 8-amino-2-naphthalenesulfonic acid 

Downstream Products

• 85-76-7 8-acetylamino-5-amino-naphthalene-2-sulfonic acid 
• 100845-42-9 5,8-dioxo-5,8-dihydro-naphthalene-2-sulfonic acid 

Relevant articles and documents

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.

Azo reactive dyestuffs having an aryl-triazinyl-aryl diazo component

Optionally metallized azo dyestuffs which in the form of the free acid correspond to the formula STR1 wherein K is the radical of a benzene, naphthalene, pyrazolone, pyridone, pyrimidone, acetoacetic acid arylide or aminopyrazole coupling component; A is a non-ionic substituent; X is STR2 wherein W is a direct bond or a bridge member to a C atom of the benzene or naphthalene nucleus or the coupling component K; R is hydrogen or C1 -C4 -alkyl; B is a direct bond or a bridge member, especially -CO- or -SO2 -, to a C atom of Q; Q is a reactive radical; m is 0, 1 or 2; n is 0, 1 or 2; p is 0 or 1; q is 0, 1 or 2; and r is 0 or 1; and their use for the dyeing and printing of natural and regenerated cellulose fibre materials such as cotton and rayon, as well as natural and synthetic polyamide fibre materials, for example those of wool, silk, poly-ε-caprolactam or polycondensate of hexamethylene-diamine and adipic acid. The dyeings obtained, espeically those on cotton and rayon, are distinguished by good fastness properties, especially fastness to wet processing and to light.