C.I. Direct brown 26

Product Name
C.I. Direct brown 26
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
Formula Weight
870.79
MOL File
Mol file
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C.I. Direct brown 26 Property

EPA Substance Registry System
C.I. Direct Brown 26 (8003-55-2)
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Hazard and Precautionary Statements (GHS)

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C.I. Direct brown 26 Chemical Properties,Usage,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

Preparation Products

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C.I. Direct brown 26 Suppliers

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8003-55-2, C.I. Direct brown 26Related 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

  • 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