2-Amino-5-(4-amino-3-hydroxyphenyl)phenol double nitriding, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid (2 Moore) coupled.
Properties and Applications
bright blue. Soluble in water for Red violet color. The strong sulfuric acid in blue, diluted for purple; Add 10% sodium bicarbonate solution for red jade.
