Acid Blue 41

Application Features

Dark blue powder, soluble in water, water solution without gathered at room temperature phenomenon. The strong sulfuric acid dyes for dark brown, after dilute for pink; In the nitric acid for brown (already break). The water solution is blue, add hydrochloric acid sodium hydroxide or after the same color. Discharge sex is bad, dyeing copper ions in the dark colored, iron ion in light and dark red.

Appearance is dark blue powder. Soluble in water, the aqueous solution does not aggregate at room temperature. It is dark brown in concentrated sulfuric acid, pink after dilution; brown in concentrated nitric acid, the structure has been destroyed. The aqueous solution is blue, plus The color is unchanged after hydrochloric acid or sodium hydroxide.

Used for wool, polyamide fiber, silk and wool blended fabric dyeing and printing directly, can also be used for leather and paper shading.

Use condition:

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

2. Wool dyeing: It should be carried out in a strong acid bath. The pH value of the dyeing solution is adjusted to 2~4, and the highest dyeing temperature is 85~95°C, which is easy to produce the phenomenon that the hair tip is not easy to be dyed.

3. Silk and nylon dyeing: carried out in an acetic acid bath.

4. Blending of blended fabrics: When the wool is dyed in the same bath as the various fibers, the apparent color depth of the nylon and silk is close to that of the wool, and the cellulose fibers are not stained.

5. When dyeing, the copper ion color is dim, and the iron ion color becomes red and dark.