3-Hydroxy-4-[(2-methylphenyl)azo]naphthalene-2,7-disulfonic acid disodium salt
- CAS NO.：5858-30-0
- Molecular Weight: 0
- SAFETY DATA SHEET (SDS)
![3-Hydroxy-4-[(2-methylphenyl)azo]naphthalene-2,7-disulfonic acid disodium salt Structural](https://img.chemicalbook.in/CAS/GIF/5858-30-0.gif)
What is 3-Hydroxy-4-[(2-methylphenyl)azo]naphthalene-2,7-disulfonic acid disodium salt?
Preparation
O-Methylaniline diazo, coupled with 3-Hydroxynaphthalene-2,7-disulfonic acid.
Properties and Applications
yellow light red. Soluble in water, slightly soluble in ethanol for orange red. The strong sulfuric acid explicit orange red, orange is still the diluted. In water solution to join strong hydrochloric acid for orange red; Add sodium hydroxide for orange brown.
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
| Fading | Stain | Fading | Stain | Fading | Stain | |||
| ISO | 1-2 | 2 | 2 | 2 | 2 | |||
Safety information for 3-Hydroxy-4-[(2-methylphenyl)azo]naphthalene-2,7-disulfonic acid disodium salt
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![7-Hydroxy-8-[(4-sulfo-1-naphthalenyl)azo]-1-naphthalenesulfonic acid disodium salt](https://img.chemicalbook.in/CAS/GIF/5858-93-5.gif)
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