Direct Green 85

3,3′-Dimethylbenzidine double nitriding, first with phenol coupling, and then in acid conditions and aniline diazo, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?and of accidentally coupled coupled nitrogen compounds.

green. Dark grey or black powder. Soluble in water for dark green. Cellulose fiber dyeing to 80℃ when the biggest affinity, for the neutral or weak alkali dye bath dyeing, directly, coloring rate is good. Mainly used for cotton, viscose, silk, polyamide fiber dyeing, also suitable for hemp, paper, soap shading and color which manufacture.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
				Fading	Stain	Fading	Stain
ISO	5	3	3-4	3-4	3	4	3-4