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C.I. Direct brown 26

C.I. Direct brown 26 Structure
CAS No.
8003-55-2
Chemical Name:
C.I. Direct brown 26
Synonyms
Direct Brown 26;C.I. Direct brown 26;C.I.Direct Brown 26:C.I.31730;Benzoic acid, 5-((4'-((4-((1-amino-5-sulfo-2-naphthalenyl)azo)-6(or 7)-sulfo-1-naphthalenyl)azo)(1,1'-biphenyl)-4-yl)azo)-2-hydroxy-, trisodium salt
CBNumber:
CB62497291
Molecular Formula:
C39H27N7O9S2.3Na
Molecular Weight:
870.79
MOL File:
Mol file
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C.I. Direct brown 26 Properties

EPA Substance Registry System C.I. Direct Brown 26 (8003-55-2)

C.I. Direct brown 26 Chemical Properties,Uses,Production

Preparation

4-(4-Aminophenyl)benzenamine double nitriding, first coupled with 2-Hydroxybenzoic acid, and then and 5-Aminonaphthalene-2-sulfonic acid and 8-Aminonaphthalene-2-sulfonic acid coupling, its product to diazo, and 5-Aminonaphthalene-1-sulfonic acid coupling.

Properties and Applications

dark red light brown. Soluble in water for olive brown, and adequate soluble in alcohol is palm yellow light. The strong sulfuric acid for dark purple, diluted dark green to shallow blue to olive brown precipitation. The dye solution to join strong hydrochloric acid have brown light olive precipitation; Add thick sodium hydroxide solution have orange brown precipitation.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 3 4 2 2 2
AATCC 2 2 1-2 2 1-2

C.I. Direct brown 26 Preparation Products And Raw materials

Raw materials

1-Naphthylamine-7-sulfonic acid Salicylic acid Benzidine 1-Aminonaphthalene-6-sulfonic acid 5-Amino-1-naphthalenesulfonic acid

Preparation Products

8003-55-2(C.I. Direct brown 26)Related Search:

disodium 3-[[4-[[4-[(2,4-diamino-5-nitrophenyl)azo]-m-tolyl]azo]-o-tolyl]azo]naphthalene-1,5-disulphonate C.I. Direct Brown 29 disodium 2'-[4-[[1-hydroxy-7-(phenylamino)-3-sulphonato-2-naphthyl]azo]phenyl]-6-methyl[2,6'-bibenzothiazole]-7-sulphonate Direct brown 33 (C.I. 35520) Direct Brown 250
trisodium 5-[[4'-[[4-[(4-amino-7-sulphonato-1-naphthyl)azo]-6-sulphonato-1-naphthyl]azo][1,1'-biphenyl]-4-yl]azo]salicylate C.I. Direct Brown 34 DIRECT BROWN B Direct Brown 25
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Benzoic acid, 5-((4'-((4-((1-amino-5-sulfo-2-naphthalenyl)azo)-6(or 7)-sulfo-1-naphthalenyl)azo)(1,1'-biphenyl)-4-yl)azo)-2-hydroxy-, trisodium salt C.I. Direct brown 26 C.I.Direct Brown 26:C.I.31730 Direct Brown 26 8003-55-2