2-Naphthalenesulfonic acid, 4-hydroxy-3-4-(4-nitro-2-sulfophenyl)azo-6(or 7)-sulfo-1-naphthalenylazo-7-(phenylamino)-, trisodium salt
- CAS NO.：8004-75-9
- Molecular Weight: 0
What is 2-Naphthalenesulfonic acid, 4-hydroxy-3-4-(4-nitro-2-sulfophenyl)azo-6(or 7)-sulfo-1-naphthalenylazo-7-(phenylamino)-, trisodium salt?
Preparation
2-Amino-5-nitrobenzenesulfonic acid diazo, and 5-Aminonaphthalene-2-sulfonic acid and 8-Aminonaphthalene-2-sulfonic acid coupling, its product to diazo, in alkaline conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid coupling.
Properties and Applications
blue. The strong sulfuric acid for green, diluted dark for; In the light of nitric acid for palm orange solution. The dye solution to join strong hydrochloric acid for dark, precipitation; Add thick sodium hydroxide solution for blue precipitation.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 5 | 4-5 | 3 | 2 | 2 | ||
Safety information for 2-Naphthalenesulfonic acid, 4-hydroxy-3-4-(4-nitro-2-sulfophenyl)azo-6(or 7)-sulfo-1-naphthalenylazo-7-(phenylamino)-, trisodium salt
2-Naphthalenesulfonic acid, 4-hydroxy-3-4-(4-nitro-2-sulfophenyl)azo-6(or 7)-sulfo-1-naphthalenylazo-7-(phenylamino)-, trisodium salt manufacturer
Ria Dyes and Chemicals Co
1Y
Phone:+91-7925897400
Whatsapp: +91-7925897400
product: 8004-75-9 Direct blue 54 99%
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