Acid yellow 19
- Molecular Weight: 0
- MDL number: MFCD00279027
- Update Date: 2026-09-12 18:52:10
What is Acid yellow 19?
Preparation
2-Aminonaphthalene-1-sulfonic acid diazo, and 2,5-Bichloro-4-(3-methyl-5-oxo-4,5-dihydropyrazol-1-yl)benzenesulfonic acid coupling.
Properties and Applications
yellow. Yellow powder. Soluble in water, 90 ℃ water solubility of 50 g/L. The dye in light of copper (dark colored light iron ion in the dark. This product is mainly used for the wool dyeing, also can be used for silk dyeing and wool and silk fabrics in direct printing, also can be used for leather color. Dye can be in pH 4 ~ 7 dyed bath dyeing, dyeing temperature of 70 ~ 90 ℃. Wool and silk dyeing in acetic acid, formic acid or sulfuric acid bath, add Sodium Sulfate help even dye.
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
| Fading | Stain | Fading | Stain | Fading | Stain | |||
| ISO | 5 | 4-5 | 5 | 4 | 4 | 4 | 4 | |
Safety information for Acid yellow 19
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