Direct Brown 70
- Product Name
- Direct Brown 70
- Chemical Name
- Direct Brown 70
- Synonyms
- Direct Brown 70;C.I.Direct Brown 70:C.I.35530
- CBNumber
- CB19702968
- Formula Weight
- 0
- MOL File
- Mol file
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Direct Brown 70 Chemical Properties,Usage,Production
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 | ||
Direct Brown 70 Preparation Products And Raw materials
Raw materials
Preparation Products
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Direct Brown 70 Suppliers
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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
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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