Mordant Blue 9

This product soluble in water is purple, in the water solubility is 50 g/l (80 ℃), slightly soluble in alcohol. In concentrated sulfuric acid for blue purple, dilution to pink; In concentrated nitric acid for yellow brown. Its aqueous solution to join concentrated hydrochloric acid to red; With strong caustic for magenta. Mainly used for wool, silk, nylon dyeing and color matching dye.