sodium 5-[(2-hydroxynaphthyl)azo]naphthalenesulphonate
- CAS NO.：5850-93-1
- Empirical Formula: C20H13N2NaO4S
- Molecular Weight: 400.38299
- MDL number: MFCD30720178
- EINECS: 227-460-7
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-12-31 14:38:37
![sodium 5-[(2-hydroxynaphthyl)azo]naphthalenesulphonate Structural](https://img.chemicalbook.in/CAS/GIF/5850-93-1.gif)
What is sodium 5-[(2-hydroxynaphthyl)azo]naphthalenesulphonate ?
Preparation
5-Aminonaphthalene-1-sulfonic acid diazo, and Naphthalen-2-ol coupling.
Properties and Applications
red. Soluble in hot water for red, slightly soluble in cold water and ethanol. The strong sulfuric acid to red light purple, diluted precipitation is brown; In nitric acid solution for yellow brown; In a dilute sodium hydroxide solution for yellow brown solution. In water solution to join hydrochloric acid with brown precipitation; Add sodium hydroxide solution to become yellow.
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
| Fading | Stain | Fading | Stain | Fading | Stain | |||
| ISO | 2-3 | 2 | 1 | 3 | 1 | 1 | 2 | 3 |
Properties of sodium 5-[(2-hydroxynaphthyl)azo]naphthalenesulphonate
| EPA Substance Registry System | 1-Naphthalenesulfonic acid, 5-[(2-hydroxy-1-naphthalenyl)azo]-, monosodium salt (5850-93-1) |
Safety information for sodium 5-[(2-hydroxynaphthyl)azo]naphthalenesulphonate
Computed Descriptors for sodium 5-[(2-hydroxynaphthyl)azo]naphthalenesulphonate
sodium 5-[(2-hydroxynaphthyl)azo]naphthalenesulphonate manufacturer
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![sodium bis[2-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]benzoato(2-)]chromate(1-)](https://img.chemicalbook.in/CAS/GIF/41741-86-0.gif)
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