Reactive Red 88

Preparation

2-Amino-5-methylbenzenesulfonic acid diazo, and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?coupling, and then and 2,4,6-Trichloro-1,3,5-triazine condensation .

Properties and Applications

blu-ray red. Purplish red powder. The strong sulfuric acid for purple, diluted into red rose; In nitric acid for red, dilute to orange. Water solution is red, with 1 Moore no change sodium hydroxide solution, continue to join insurance powder warm to colorless, add a boric acid sodium is still colorless. Mainly used for cotton, nylon, viscose fiber and fabric dyed and roll across.