Acid yellow 29
- CAS NO.：6359-91-7
- Empirical Formula: C22H18ClN5O6S2.Na
- Molecular Weight: 570.98
- MDL number: MFCD00057225
- EINECS: 228-814-3
- Update Date: 2026-09-12 18:54:55
What is Acid yellow 29?
Preparation
3-Aminobenzenesulfonamide diazo, and 4-Chloro-3-(3-methyl-5-oxo4,5-dihydropyrazol-1-yl)benzenesulfonic acid?coupling.
Properties and Applications
yellow. Soluble in water for yellow, cooling solution is to mix, soluble in ethanol and acetone, insoluble in toluene. The strong sulfuric acid for yellow, diluted no precipitation. In the rare hydrochloric acid in aqueous solution to color; Join rare sodium hydroxide solution discoloration. Used for wool, silk, vinegar and polyamide fiber dyeing. But in the wool and silk printing directly on, also can used for leather color.
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
| Fading | Stain | Fading | Stain | Fading | Stain | |||
| ISO | 6-7 | 2 | 4-5 | 4 | 1 | 1 | 4 | |
| AATCC | 5-6 | 4-5 | 4-5 | 4-5 | 4 | |||
Properties of Acid yellow 29
| Melting point: | 238 °C (dec.)(lit.) |
| form | Powder |
| color | Yellow |
| EPA Substance Registry System | C.I. Acid Yellow 29 (6359-91-7) |
Safety information for Acid yellow 29
Computed Descriptors for Acid yellow 29
Acid yellow 29 manufacturer
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