Acid Black ATT

Colour Fastness Test

The appearance is brownish black powder, soluble in water and black solution. Acid Black ATT is red and dark in concentrated sulfuric acid; it is reddish brown in concentrated nitric acid, and it is blue-black in concentrated ammonia.

Acid Black ATT Use condition:

1. It is mainly used for dyeing and printing of wool, silk, nylon and blended fabrics. It can also be used for coloring leather, aluminum products and wood.

2. Wool dyeing: In a strong acid or weakly acidic bath, the pH of the dyeing solution is adjusted to 3~5, and the leveling powder can be used as a retarding agent to improve the leveling property.

3. Blending of blended fabrics: When wool and various fibers are dyed in the same bath, the cotton and viscose fibers are stained blue, the nylon is heavily stained, the acrylic and polyester are stained, the diacetate fibers are orange, and the triacetate fibers are not stained. .

4. Acid black ATT dyeing wet processing is not fast, the application is limited, generally replaced by weak acid black BR and other dyes.

Used for silk, acrylic, tannin mordant dyeing cotton dyeing, also can be used for leather, paper, hemp and glue directly printing and dyeing, the discharge printing. Can also be used in oil and fat, paint color, also can be used in the preparation of color which used in ink.