| abstract |
An agent for dyeing keratin-containing fibers, in particular human hair, is claimed, comprising a naphthyl-azo compound having the formula I, DOLLAR F1 in which R · 1 · represents hydrogen, halogen, a sulfo group, nitro group, an arylazo group, DOLLAR AR · 2 · stands for a phenyl group or naphthyl group, which can be substituted by halogen, hydroxy, amino, sulfo, carboxy, nitro or C¶1¶-C¶4¶ alkoxy groups, DOLLAR AM for hydrogen , an alkali or 1/2 alkaline earth metal, 1/3 Al (III), 1/2 Zn (II), 1/4 Ti (IV), 1/4 Zr (IV), 1/3 Cr (III), 1/2 Co (II), 1/2 Fe (II), 1/3 Mo (III) or 1/6 Mo (VI), 1/3 W (III) or 1/6 W (VI) or Ammonium stands. |