1-Naphthalenesulfonic acid, 4,5-dihydroxy-3-[(4-sulfophenyl)azo]-, disodium salt
- CAS NO.：5850-50-0
- Empirical Formula: C16H10N2Na2O8S2
- Molecular Weight: 468.36874
- EINECS: 611-670-4
![1-Naphthalenesulfonic acid, 4,5-dihydroxy-3-[(4-sulfophenyl)azo]-, disodium salt Structural](https://img.chemicalbook.in/CAS/20200119/GIF/5850-50-0.gif)
What is 1-Naphthalenesulfonic acid, 4,5-dihydroxy-3-[(4-sulfophenyl)azo]-, disodium salt?
Preparation
2-Aminobenzenesulfonic acid diazo, and 4,5Dihydroxynaphthalene-1-sulfonic acid?coupling.
Properties and Applications
blue-ray red. Soluble in water for wine red, hardly soluble in alcohol. The strong sulfuric acid for dark purple, diluted red wine. In water solution to join strong hydrochloric acid for the red; Add sodium hydroxide into wine red to the deep red.
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
| Fading | Stain | Fading | Stain | Fading | Stain | |||
| ISO | 4 | 2 | 3-4 | 2-3 | 1 | 3 | ||
Safety information for 1-Naphthalenesulfonic acid, 4,5-dihydroxy-3-[(4-sulfophenyl)azo]-, disodium salt
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![sodium 5-[2-[5-chloro-2-(4-methylphenyl)sulfonyl-phenyl]hydrazinyl]-6-imino-4-oxo-naphthalene-2-sulfonate](https://img.chemicalbook.in/CAS/GIF/12220-30-3.gif)
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