Direct Brown 25
Direct Brown 25 Basic information
- Product Name:
- Direct Brown 25
- Synonyms:
-
- Direct Brown 25
- C.I.Direct Brown 25:C.I.36030
- MW:
- 0
- Mol File:
- Mol File
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Direct Brown 25 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 C.I. Basic Brown (C.I. 21000) coupled.
Properties and Applications
brown to red light brown. Soluble in water for yellow brown to olive brown, slightly soluble in ethanol, acetone, soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid for purple to blue-black, diluted is shallow brown; In nitric acid of for olive completely dissolved. The dye solution to join strong hydrochloric acid with olives brown precipitation; Add thick sodium hydroxide solution have yellow brown to orange brown precipitation.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 3 | 3-4 | 3 | 2 | 2-3 | ||
| AATCC | 4 | 2 | 1-2 | 2-3 | 3 | ||
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Direct Brown 25()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
- C.I. Direct brown 26
- 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