Acid Red 215

Uses

Acid Red 215 is mainly used for dyeing wool, silk, tussah silk, vinylon, nylon, and vinylon/cotton blends in weakly acidic or neutral dye baths. It is also used for direct printing on wool, silk, and nylon fabrics. When used for dyeing wool with multiple fibers in the same bath, nylon receives a deeper color, silk a slightly lighter color, vinylon a lighter color, cellulose acetate and cotton show slight staining, and viscose fiber does not stain. It is also used for dyeing leather.

Preparation

2-Amino-5-nitrophenoldiazo, and 3-(3-Methyl-5-oxo-4,5-dihydropyrazol-1-yl)benzenesulfonamide coupling, and then in water solution and chromium acid were hot, make the generation of the 1:2 chromium complex.

Properties and Applications

blue-ray red. Purplish red color to purple powder. Used for wool, silk and polyamide fiber fabric dyeing, also can be used for polyamide, silk, viscose and wool fabric printing, also can be used for leather dyeing.

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