4247-14-7

3,3′-Dimethoxylbenzidine double nitriding, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-1-sulfonic acid (2 Moore) coupled.

blue. Soluble in water for blue, insoluble in organic solvents. The strong sulfuric acid for blue-ray green, diluted red for blue; In nitric acid solution for the red light in blue. The dye solution to join 10% sodium hydroxide solution for bright blue.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
				Fading	Stain	Fading	Stain
AATCC	2	5	2-3	2		4