6739-62-4

Basic information

• Product Name: trisodium 2-[[2-amino-6-[[4'-[(3-carboxylato-4-hydroxyphenyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-5-hydroxy-7-sulphonato-1-naphthyl]azo]-5-nitrobenzoate
• Synonyms: trisodium 2-[[2-amino-6-[[4'-[(3-carboxylato-4-hydroxyphenyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-5-hydroxy-7-sulphonato-1-naphthyl]azo]-5-nitrobenzoate;C.I. Direct Black 91;1'-biphenyl]-4-yl]azo]-5-hydroxy-7-sulfo-1-naphthalenyl]azo]-5-nitro-y[ tris;benzoic acid, 2-[[2-amino-6-[[4'-[(3-carboxy-4-hydroxyphenyl)azo]-3,3'-dimethox;Benzoic acid, 2-[[2-amino-6-[[4'-[(3-carboxy-4-hydroxyphenyl)azo]-3,3'-dimethoxy(1,1'-biphenyl)-4-yl]azo]-5-hydroxy-7-sulfo-1-naphthalenyl]azo]-5-nitro-, trisodium salt;Direct black 91 (C.I. 30400);5-[[4'-[[6-Amino-5-[(2-carboxy-4-nitrophenyl)azo]-1-hydroxy-3-sulfo-2-naphtyl]azo]-3,3'-dimethoxy-1,1'-biphenyl-4-yl]azo]-2-hydroxybenzoic acid trisodium salt;C.I.30400
• CAS NO: 6739-62-4
• Molecular Formula: C38H28N8O13S.3Na
• Molecular Weight: 905.72
• EINECS: 229-801-5
• Product Categories: Organics
• Mol File: 6739-62-4.mol
• Article Data: 0

Chemical Properties

• Appearance: /
• CAS DataBase Reference: trisodium 2-[[2-amino-6-[[4'-[(3-carboxylato-4-hydroxyphenyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-5-hydroxy-7-sulphonato-1-naphthyl]azo]-5-nitrobenzoate(CAS DataBase Reference)
• NIST Chemistry Reference: trisodium 2-[[2-amino-6-[[4'-[(3-carboxylato-4-hydroxyphenyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-5-hydroxy-7-sulphonato-1-naphthyl]azo]-5-nitrobenzoate(6739-62-4)
• EPA Substance Registry System: trisodium 2-[[2-amino-6-[[4'-[(3-carboxylato-4-hydroxyphenyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-5-hydroxy-7-sulphonato-1-naphthyl]azo]-5-nitrobenzoate(6739-62-4)

Safety Data

• Hazardous Substances Data: 6739-62-4(Hazardous Substances Data)

Usage

Uses

Direct Black 91 is used as a jet-printing ink with improved storage stability and nozzle clogging resistance. Direct Black 91 is a cotton fiber dye.

Preparation

3,3′-Dimethoxylbenzidine double nitriding, First coupled with 2-Hydroxybenzoic acid, coupled with the first again with 2-Amino-5-nitrobenzoic acid diazo, in acid conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid and coupled the product of coupling.

Properties and Applications

red light black. Black powder. Soluble in water, the solution for the red light black, hard to stability. In dyeing of copper (a slight change color in a dark colored light iron ion. Used for cotton, viscose and their blended fabric dyeing, can be in cotton or viscose fabric direct printing can and dispersal dyes with bath dyeing. Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water Fading Stain Fading Stain ISO 4 5 6-7 4-5 5 AATCC 7 5

Standard

Acid Resistance

Fading

Stain

ISO

4

InChI:InChI=1/C38H28N8O13S.3Na/c1-58-31-13-18(3-9-28(31)42-40-20-5-12-30(47)25(15-20)38(51)52)19-4-10-29(32(14-19)59-2)43-45-35-33(60(55,56)57)17-23-22(36(35)48)7-8-26(39)34(23)44-41-27-11-6-21(46(53)54)16-24(27)37(49)50;;;/h3-17,47-48H,39H2,1-2H3,(H,49,50)(H,51,52)(H,55,56,57);;;/q;3*+1/p-3