REACTIVE BROWN 2

Preparation

5-Aminonaphthalene-1,3,6-trisulfonic acid diazo, and?2,5-Dimethylbenzenamine coupling, again diazo, and 5-Aminonaphthalene-2-sulfonic acid coupling, and 2,4,6-Trichloro-1,3,5-triazine condensation, and then ammoniated.

Properties and Applications

orange light brown. Red brown powder, the strong sulfuric acid for black, with precipitation, diluted into brown; In nitric acid for red brown, after diluted into a brown. Water solution is golden brown; Add in 1 Moore sodium hydroxide solution for golden still, continue to join insurance powder and warm turned yellow, join a boric acid sodium into a colourless. Used for cotton or rayon, silk and PVA fabric dyeing and direct printing, resist printing, discharge printing..