Direct Brown 78
Direct Brown 78 Basic information
- Product Name:
- Direct Brown 78
- Synonyms:
-
- Direct Brown 78
- C.I.Direct Brown 78:C.I.40290
- CAS:
- 12262-19-0
- MW:
- 0
- Mol File:
- Mol File
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Direct Brown 78 Usage And Synthesis
Preparation
in reflux conditions (or a little take pressure), in sodium hydroxide solution will be (E)-2-(2-sulfo-4-nitrostyryl)-5-nitrobenzenesulfonic acid with Sodium 4-aminobenzenesulfonate??diazotization?and Naphthalen-1-amine coupled with heating products. Reaction to the different proportion of material that get different commodity dye.
Properties and Applications
red light brown. Soluble in water for orange brown, slightly soluble in alcohol. The strong sulfuric acid in blue light green light for black to black, diluted to olive brown for yellow light. The dye solution to join strong hydrochloric acid have yellow olive brown precipitation; Add thick sodium hydroxide solution for palm light orange.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 4 | 4 | 5 | 2-3 | 2-3 | ||
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Direct Brown 78(12262-19-0)Related Product Information
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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