Mordant Red 29

Bis (4 – (dimethylamino) phenyl) methanol and 5-Amino-2-hydroxybenzoic acid condensation, then will product oxidation.

brilliant red. Insoluble in water, slightly soluble in hot ethanol to red. In concentrated sulfuric acid to blue light red, dilution red brown after precipitation. Dye aqueous solution to join strong life hydroxide solution for brown light red.