DIAMINE GREEN B

Preparation

4-(4-Aminophenyl)benzenamine double nitriding, first in alkaline conditions and 4-Nitrobenzenamine?diazo, in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?and coupled the product of three, and then coupled with phenol.

Properties and Applications

dark green. Deep purple powder. Soluble in water for variegated dark green, soluble in acetone and soluble fiber element, slightly soluble in alcohol, insoluble in other organic solvents. The strong sulfuric acid for violet black, diluted to black for violet; In strong hydrochloric acid and nitric acid for purple. The dye solution to generate strong hydrochloric acid dark blue light green precipitation; Add 10% will be more blue sulfuric acid; Add thick sodium hydroxide solution for dark green to olive. Cellulose fiber of dyeing, the dye devoured the gender is good, in the 80 ℃ temperature of the largest affinity. Discharge of sensitive to that fights. In dyeing copper and iron ions are turned dark colored. Mainly used for cotton, hemp, such as glue of cellulose fiber dyeing, also used in cotton and viscose fabric dyeing and printing, also used for silk, polyamide fiber, stick/hair, sticky/ Kam fabric dyeing and printing. Can also be used in paper, soap, leather, regenerated celluloee fiber film shading, also used in the manufacture of color pigment sediment.