sodium 6-(1-naphthylazo)naphthalene-2-sulphonate
- CAS NO.：6407-85-8
- Empirical Formula: C20H13N2NaO3S
- Molecular Weight: 385.39
- EINECS: 229-046-1
- Update Date: 2025-12-31 14:38:37
What is sodium 6-(1-naphthylazo)naphthalene-2-sulphonate?
Preparation
6-Aminonaphthalene-2-sulfonic acid diazo, and Naphthalen-1-amine coupling, and then diazo, and with ethanol and sodium carbonate common heating, away with amino.
Properties and Applications
brown. Water solution is yellow brown, but water-soluble not beautiful, easily soluble in ethanol is yellow light brown. In the dark for the strong sulfuric acid (purple and product red), after diluted for brown. In aqueous solution to join strong hydrochloric acid for yellow olive brown; Add thick hydrogen for orange brown, oxidation solution.
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
| Fading | Stain | Fading | Stain | Fading | Stain | |||
| ISO | 4-5 | 3 | 2 | 3 | 1 | 3 | ||
Properties of sodium 6-(1-naphthylazo)naphthalene-2-sulphonate
| EPA Substance Registry System | 2-Naphthalenesulfonic acid, 6-(1-naphthalenylazo)-, sodium salt (6407-85-8) |
Safety information for sodium 6-(1-naphthylazo)naphthalene-2-sulphonate
Computed Descriptors for sodium 6-(1-naphthylazo)naphthalene-2-sulphonate
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