C.I.13000;Acid Brown 8;Azo Acid Brown;C.I.Acid Brown 8;C.I.Acid Brown 8:C.I.13000;sodium 6-(1-naphthylazo)naphthalene-2-sulphonate;6-(1-Naphtylazo)-2-naphthalenesulfonic acid sodium salt;6-[(1-Naphtyl)azo]-2-naphthalenesulfonic acid sodium salt
6-Aminonaphthalene-2-sulfonic acid diazo, and Naphthalen-1-amine coupling, and then diazo, and with ethanol and sodium carbonate common heating, away with amino.
Properties and Applications
brown. Water solution is yellow brown, but water-soluble not beautiful, easily soluble in ethanol is yellow light brown. In the dark for the strong sulfuric acid (purple and product red), after diluted for brown. In aqueous solution to join strong hydrochloric acid for yellow olive brown; Add thick hydrogen for orange brown, oxidation solution.