disodium 5-hydroxy-6-[(4-sulphonatonaphthyl)azo]naphthalenesulphonate
- CAS NO.：3746-79-0
- Empirical Formula: C20H15N2NaO7S2
- Molecular Weight: 482.46
- EINECS: 223-142-7
- SAFETY DATA SHEET (SDS)
![disodium 5-hydroxy-6-[(4-sulphonatonaphthyl)azo]naphthalenesulphonate Structural](https://img.chemicalbook.in/CAS/GIF/3746-79-0.gif)
What is disodium 5-hydroxy-6-[(4-sulphonatonaphthyl)azo]naphthalenesulphonate?
Preparation
4-Aminonaphthalene-1-sulfonic acid diazo, and 5-Hydroxynaphthalene-1-sulfonic acid coupling.
Properties and Applications
blue-ray red. Soluble in water for product red, slightly soluble in ethanol, acetone, soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid for red light blue, pink solution diluted and appear to precipitate; In nitric acid, the orange into yellow solution. Its water solution to join strong hydrochloric acid for product red; Add sodium hydroxide for product red.
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
| Fading | Stain | Fading | Stain | Fading | Stain | |||
| ISO | 3 | 2 | 5 | 2 | 1 | 4 | 3 | 2 |
Safety information for disodium 5-hydroxy-6-[(4-sulphonatonaphthyl)azo]naphthalenesulphonate
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![disodium 8-[[3,3'-dimethoxy-4'-[[4-[[(p-tolyl)sulphonyl]oxy]phenyl]azo][1,1'-biphenyl]-4-yl]azo]-7-hydroxynaphthalene-1,3-disulphonate](https://img.chemicalbook.in/CAS/GIF/6548-30-7.gif)
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