Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-[[4-[[(4-methylphenyl)sulfonyl]oxy]phenyl]azo]-, disodium salt
- CAS NO.：82323-97-5
- Empirical Formula: C40H33N4NaO12S4
- Molecular Weight: 912.95
- EINECS: 617-316-5
![Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-[[4-[[(4-methylphenyl)sulfonyl]oxy]phenyl]azo]-, disodium salt Structural](https://img.chemicalbook.in/CAS/20211123/GIF/82323-97-5.gif)
What is Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-[[4-[[(4-methylphenyl)sulfonyl]oxy]phenyl]azo]-, disodium salt?
Preparation
1,2-Bis(4-amino-2-sulfophenyl)ethene? double nitriding, and phenol (2 Moore) coupled, then 4-Methylbenzene-1-sulfonyl chloride with phenol hydroxyl groups esterified.
Properties and Applications
dark red light yellow. Mainly used for wool, polyamide fiber dyeing, also can be used for silk dyeing. Good solubility.
| Standard(Polyamide) | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
| Fading | Stain | Fading | Stain | Fading | Stain | |||
| ISO | 6-7 | 5 | ||||||
Safety information for Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-[[4-[[(4-methylphenyl)sulfonyl]oxy]phenyl]azo]-, disodium salt
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