Acid Black 234
- CAS NO.：157577-99-6
- Empirical Formula: C34H29N10NaO9S3
- Molecular Weight: 840.84
- MDL number: MFCD01631183
- EINECS: 605-104-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-27 23:49:27
What is Acid Black 234?
Preparation
4-Amino-N-(4-aminophenyl)benzenesulfonamide double nitriding,sulfonylurea aniline in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acidcoupling, aniline diazo, and the above the products in alkaline conditions coupling, and then Benzene-1,3-diamine coupled.
Flammability and Explosibility
Non flammable
Properties and Applications
black. Mainly used for wool, silk, cotton and glue dyeing, also can be used for leather dyeing.
Properties of Acid Black 234
| Density | 1.193[at 20℃] |
| vapor pressure | 0Pa at 25℃ |
| pka | 7.62[at 20 ℃] |
| Water Solubility | 215g/L at 20℃ |
| CAS DataBase Reference | 157577-99-6(CAS DataBase Reference) |
| EPA Substance Registry System | 2,7-Naphthalenedisulfonic acid, 4-amino-3-[[4-[[[4-[(2,4-diaminophenyl)azo]phenyl]sulfonyl]amino]phenyl]azo]-5-hydroxy-6-(phenylazo)-, disodium salt (157577-99-6) |
Safety information for Acid Black 234
Computed Descriptors for Acid Black 234
New Products
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