Acid Red 142
- CAS NO.：6406-66-2
- Empirical Formula: C22H17N4NaO7S2
- Molecular Weight: 536.51
- SAFETY DATA SHEET (SDS)
What is Acid Red 142?
Preparation
4-((4-Aminophenyl)diazenyl)benzenesulfonic acid diazo, and 6-Hydroxynaphthalene-2-sulfonic acid coupling.
Properties and Applications
red. Soluble in water for red, soluble in ethanol for orange red. In the strong sulfuric acid as dark blue, diluted into red. In water solution to join strong hydrochloric acid by brown orange into palm red; Add thick sodium hydroxide solution for purplish red color.
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
| Fading | Stain | Fading | Stain | Fading | Stain | |||
| ISO | 4 | 4 | 5 | 2-3 | 4-5 | |||
Safety information for Acid Red 142
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![sodium 5-[(2-hydroxynaphthyl)azo]naphthalenesulphonate](https://img.chemicalbook.in/CAS/GIF/5850-93-1.gif)
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