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4-Aminobenzenesulfonic acid diazo, and 2,5-Bichloro-4-(3-methyl-5-oxo-4,5-dihydropyrazol-1-yl)benzenesulfonic acid coupling.Properties and Applications
brilliant yellow. Yellow powder. Soluble in water is green light yellow, slightly soluble in ethanol and acetone, insoluble in other organic solvents. The strong sulfuric acid for green light yellow, it will be diluted don’t generate precipitation; In a red light yellow nitric acid. Its water solution with hydrochloric acid discoloration; Add sodium hydroxide solution almost discoloration. Its water solution and carved white piece of bleaching, but in the air oxidation, solution and show red light purple. In dyeing copper and iron ion colour and lustre is a little red and dark, discharge the gender is good. Mainly used for wool in strong acid dye in the bath dyeing, silk dyeing in acetic acid bath, polyamide fiber dyeing in formic acid dye bath. This product can be directly on the wool fabric printing, also can dye leather, and can be made into color which. But on paper surface shading, can also be used in paint, medicine and cosmetics of shading.| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
| Fading | Stain | Fading | Stain | Fading | Stain | |||
| ISO | 7 | 2 | 5 | 4-5 | 1 | 5 | 4-5 | 2 |
| AATCC | 7 | 2 | 2 | 1 | 1 | 1 | 3-4 | 3-4 |
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