Abstract: Azo dyes which are highly soluble in organic solvents are disclosed. The dyes have the general formula ##STR1## in which M = 1 TO 3;n = 1 or 2;X = h or NO.sub.2 ;Y = h, cl, NO.sub.2, lower alkyl or lower alkoxy radicals containing from 1 to 3 carbon atoms;Z and Z' = H, Cl, lower alkyl or alkoxy radicals containing 1 to 3 carbon atoms, or lower acylamine groups;R' = alkyl or ##STR2## R" = H, or a lower alkyl radical containing 1 to 3 carbon atoms; R'" = an alkyl radical containing from 1 to 18 carbon atoms, or a cycloalkyl radical.The aromatic nuclei A, B, and C may have other water-insoluble substituents.Organic solvent solutions of the azo dyes are provided, as are, also, processes for obtaining the dyes.