Acid Blue 62

Application Features

Soluble in water and ethanol. Meet strong sulfuric acid is olive green, diluted light orange for palm.

Appearance is red light blue powder. Soluble in water and ethanol. It is olive green when concentrated sulfuric acid, brownish orange after dilution; orange in concentrated nitric acid. The aqueous solution is blue, and hydrochloric acid is yellow light brown. Add sodium hydroxide to a light blue color.

Used for wool, polyamide, silk dyeing and printing directly, also used in leather shading.

Use condition:

1. It is used for dyeing and direct printing of wool, nylon and silk, and can also be used for leather dyeing.

2. Wool dyeing: It should be carried out in a weakly acidic bath. The pH value of the dyeing solution is adjusted to 3.5~5.5, which should be dyed at room temperature. The dyed dark color is used in a strong acid bath, but the color is dark. When dyeing wool, the color is bright and pure, and the dyeing is uniform. It is suitable for dyeing light and medium color, and can also be used for color matching. The main disadvantage is that the wet processing is not fast, and it can be replaced by weak acid blue RALL.

3. Silk dyeing: carried out in a weakly acidic bath, the wet processing fastness on silk is worse than wool dyeing, and the use of synthetic tannin fixing color is helpful for improving soaping and perspiration fastness.

4. Nylon dyeing: It is carried out in a weakly acidic bath. The dye is more suitable for dyeing nylon. It has good hiding property for nylon strips and can improve strips.

5. Blending of blended fabrics: When wool and other fibers are dyed in the same bath, the apparent color depth of nylon and silk is similar to that of wool. The polyester and acrylic fibers are stained, the diacetate fibers are slightly stained, and the triacetate fibers are not stained.