Molecular Formula | C23H20N5NaO6S2 |
Molar Mass | 549.55457 |
Storage Condition | Room Temprature |
Physical and Chemical Properties | The chemical properties are soluble in water. Slightly soluble in ethanol and acetone. The aqueous solution is yellow, and the color of sodium hydroxide does not change; it becomes turbid when cold. It is yellow in concentrated sulfuric acid, and fluorescent yellow precipitate is produced after dilution. |
Use | Used for wool fabric dyeing and nylon fabric printing and dyeing, also used for leather and electrochemical aluminum coloring. Sometimes also used as a coating for paper. |
WGK Germany | 3 |
Raw Materials | 5-pyrrazolone |
color index | 18835 |
EPA chemical information | C. I. Acid Yellow 25 (6359-85-9) |
Using 4-amino -2-(anilinylsulfonyl) methylene and 3-methyl -1-p-sulfonic phenyl -5-pyrazolone as raw materials. First, diazotize the former, and then couple with the latter to obtain the product. The finished product is salted out, filtered, dried and crushed.