Direct Brown 70
Direct Brown 70 Basic information
- Product Name:
- Direct Brown 70
- Synonyms:
-
- Direct Brown 70
- C.I.Direct Brown 70:C.I.35530
- MW:
- 0
- Mol File:
- Mol File
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Direct Brown 70 Usage And Synthesis
Preparation
4-(4-Aminophenyl)benzenamine double nitriding, first coupled with 2-Hydroxybenzoic acid, and then in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acidcoupling, product to diazo, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling, its product to diazo, and Benzene-1,3-diamine coupling.
Properties and Applications
dark red light brown. Soluble in water for brown. The strong sulfuric acid for purple brown, dilute brown yellow light after precipitation. The dye solution to join strong hydrochloric acid have brown light black precipitation; Add thick sodium hydroxide solution for palm light purple.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 4-5 | 4 | 2-3 | 3-4 | 3-4 | ||
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Direct Brown 70()Related Product Information
- Direct Brown 7
- C.I. Direct brown 75
- DIRECT BROWN 74
- 6-Amino-3-[[4'-[[2,6-diamino-3-methyl-5-[(4-sulfophenyl)azo]phenyl]azo]-1,1'-biphenyl-4-yl]azo]-4-hydroxy-2-naphthalenesulfonic acid disodium salt
- Direct Brown 69
- Direct Brown 73
- C.I. Direct Brown 67
- Direct Brown 78
- 4,4'-[(2-Methyl-5-sodiosulfo-1,3-phenylene)bis[azo(4,6-diamino-3,1-phenylene)azo]]bis[naphthalene-1-sulfonic acid sodium] salt