Acid Blue 168

Uses

Acid Blue 168 is mainly used for dyeing wool, silk, and tussah silk in neutral or weakly acidic dye baths, as well as for direct printing on fabrics such as wool, silk, nylon, and vinylon. When used for dyeing wool with multiple fibers in the same bath, nylon will receive a deeper color, silk a slightly lighter color, cellulose acetate will show some staining, cotton will show slight staining, and viscose and polyester will not show staining. It can also be blended with Neutral Deep Yellow (GL) and Neutral Green (GL).

Preparation

3-Amino-4-hydroxybenzenesulfonamide diazo, and 2-(Benzylideneamino)benzoic acid coupling, and then into copper complex.

Properties and Applications

red light navy blue. Blue to blue gray powder. Soluble in water. The strong sulfuric acid in Red sauce for, diluted into shallow orange solution; No change in strong hydrochloric acid, diluted into a red light blue with precipitation; In nitric acid was damaged in; In the thick of sodium hydroxide solution without change, diluted into light red light blue solution. Water solution is blue, and later have suspended shape dye exhalation, addition of suitable amount of phosphate three sodium can be improved. Used for wool, silk, silk, polyvinyl alcohol, nylon, Victoria / viscose blends, wool / rayon blended fabric dyeing and printing, also used for leather dyeing.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
		Fading	Stain		Fading	Stain	Fading	Stain
ISO	6-7	5	4-5	5	3-4	5	5	5
AATCC		5	5	5