2-Methyl-4-(o-tolyldiazenyl)benzenamine diazo, coupled with 3-Hydroxynaphthalene-2,7-disulfonic acid (27200). 2-Methyl-4-(o-tolyldiazenyl)benzenaminediazo, and 6-Hydroxynaphthalene-2-sulfonic acid and where did 3-Hydroxynaphthalene-2,7-disulfonic acid mixture of coupling (27201).
Properties and Applications
blue-ray red. Soluble in water for product red, slightly soluble in alcohol. In the strong sulfuric acid as dark blue, diluted into a peach. In water solution to join hydrochloric acid for dark purple; Add thick sodium hydroxide solution for purplish red color.
