Direct Black 166
- CAS NO.：57131-19-8
- Empirical Formula: C35H26N10O8S2.2Na
- Molecular Weight: 824.764
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-08-28 09:47:32
What is Direct Black 166?
Preparation
4-Amino-N-(4-aminophenyl)benzamide double nitriding, in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?coupled, aniline diazo, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?group of neighborhood, a coupling again with Benzene-1,3-diamine coupling.
Properties and Applications
black. Used for cellulose fiber dyeing and printing, also can be used for leather dyeing. Is C.I. Direct Black 38 substitutes.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 3 | 2-3 | 1 | 3 | 1 | ||
Properties of Direct Black 166
| CAS DataBase Reference | 57131-19-8 |
| EPA Substance Registry System | 2,7-Naphthalenedisulfonic acid, 4-amino-3-[[4-[[[4-[(2,4-diaminophenyl)azo]phenyl]amino]carbonyl]phenyl]azo]-5-hydroxy-6-(phenylazo)-, disodium salt (57131-19-8) |
Safety information for Direct Black 166
Computed Descriptors for Direct Black 166
Direct Black 166 manufacturer
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