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5-Amino-2-methyl-N-phenylbenzenesulfonamide diazo, and 4-(3-Methyl-5-oxo-4,5-dihydropyrazol-1-yl)benzenesulfonic acid coupling.
Product Name:Acid Yellow 25
Molecular Structure: Single azo class 
Molecular Formula:C23H20N5NaO6S2
Molecular Weight: 549.56
CAS Registry Number:6359-85-9
Manufacturing Methods : 5-Amino-2-methyl-N-phenylbenzenesulfonamide diazo, and 4-(3-Methyl-5-oxo-4,5-dihydropyrazol-1-yl)benzenesulfonic acid coupling.
Properties and Applications: yellow. Yellow powder. Soluble in water yellow, encounter cold becomes muddy. Slightly soluble in ethanol and acetone. Meet strong sulfuric acid is yellow, the generation after diluted fluorescent yellow precipitation. Its water solution meet sodium hydroxide solution without change. Mainly used for wool and polyamide fiber of printing and dyeing, also can be used for leather and electrochemical aluminum shading, occasionally used for paper coating.
Counter Product: Nylosan Yellow E-RPL,Dorasyn Yellow AGRL
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
Fading | Stain | Fading | Stain | Fading | Stain | |||
ISO | 5-6 | 4 | 2 | 3 | 1 | 3 | 3 | |
AATCC | 6-7 | 4 | 4 | 3-4 | 1 | 1 | 4 | |
