sodium 3-[(1,5-dihydroxy-2-naphthyl)azo]-4-hydroxy-5-nitrobenzenesulphonate
- CAS NO.：5979-27-1
- Empirical Formula: C16H10N3NaO8S
- Molecular Weight: 427.32067
- EINECS: 2277828
- SAFETY DATA SHEET (SDS)
![sodium 3-[(1,5-dihydroxy-2-naphthyl)azo]-4-hydroxy-5-nitrobenzenesulphonate Structural](https://img.chemicalbook.in/CAS/GIF/5979-27-1.gif)
What is sodium 3-[(1,5-dihydroxy-2-naphthyl)azo]-4-hydroxy-5-nitrobenzenesulphonate ?
Preparation
3-Amino-4-hydroxy-5-nitrobenzenesulfonic acid diazotization, and Naphthalene-1,5-diol?coupling.
Properties and Applications
black. Soluble in water for bordeaux red, right amount soluble in ethanol for orange red brown. In concentrated sulfuric acid for purple brown, dilution for red wine. Dye aqueous solution to join concentrated hydrochloric acid for red brown; With strong caustic is purple.
| Standard | Ironing Fastness | Light Fastness | Fulling | Persperation Fastness | Soaping | Water | |
| Alkali | Acid | ||||||
| ISO | 5 | 6 | 5 | 3 | 5 | 5 | 5 |
Safety information for sodium 3-[(1,5-dihydroxy-2-naphthyl)azo]-4-hydroxy-5-nitrobenzenesulphonate
Related products of tetrahydrofuran
![1-[(2-hydroxy-3,5-dinitrophenyl)azo]-2-naphthol](https://img.chemicalbook.in/CAS/GIF/4998-82-7.gif)
![2-Naphthalenesulfonic acid, 4-hydroxy-3-[(2-hydroxy-5-nitrophenyl)azo]-7-(phenylamino)-, monosodium salt](https://img.chemicalbook.in/CAS/20200401/GIF/6222-51-1.gif)
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