p-Anisidine diazo, and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?coupling, and 2,4,6-Trichloro-1,3,5-triazine condensation, and then salting-out.
Properties and Applications
red light purple. Grey purple powder. The strong sulfuric acid for blue-black, accompanied by a few purple precipitation, diluted for blu-ray red; In concentrated nitric acid for brown, Diluted into reddish brown. Water solution is violet. Add in 1 Moore sodium hydroxide solution into orange, continue to join insurance powder and warm, fade, add a boric acid sodium into light yellow. Mainly used for cotton, nylon, silk, viscose fiber and fabric dyed and roll across, solid color rate is higher.
