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C.I. Direct brown 26

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C.I. Direct brown 26 Basic information
Product Name:C.I. Direct brown 26
Synonyms: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
CAS:8003-55-2
MF:C39H27N7O9S2.3Na
MW:870.79
EINECS:
Product Categories:
Mol File:Mol File
C.I. Direct brown 26 Structure
C.I. Direct brown 26 Chemical Properties
EPA Substance Registry SystemC.I. Direct Brown 26 (8003-55-2)
Safety Information
MSDS Information
C.I. Direct brown 26 Usage And Synthesis
Preparation4-(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 Applicationsdark 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 materials1-Naphthylamine-7-sulfonic acid-->Salicylic acid-->Benzidine-->1-Aminonaphthalene-6-sulfonic acid-->5-Amino-1-naphthalenesulfonic acid
Tag:C.I. Direct brown 26(8003-55-2) Related Product Information
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