2,4-Diaminobenzenesulfonic acid diazo, and 1-(2-methyl-4-sulfophenyl)-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylic acid?coupling, again with 2,3-Dichloroquinoxaline-6-carbonyl chloride?condensation.
Properties and Applications
brilliant yellow. Light yellow evenly powder, 25 ℃ in when more than 100 g/L solubility. After dyeing for bright yellow, dye bath containing iron ion make a turn red light and turn a little shallow; Meet copper ions turned dark. The neutral and alkaline white are A level. Apply to the cellulose fiber dyeing and printing, especially suitable to discharge printing.
