C.I. Direct brown 26
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
- Mol File:
- Mol File
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C.I. Direct brown 26 Chemical Properties
- EPA Substance Registry System
- C.I. Direct Brown 26 (8003-55-2)
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C.I. Direct brown 26 Usage And Synthesis
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 | ||
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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