complexes acid dyes by combining transition metal (Cu2+) with two azo acid dyes namely Acid Orange 7 (C.I. 15510) and Amido black 10B (C.I. 20470) as precursors. It is well known that the wide-spreadest class of synthetic organic dyes, representing more than 50% of the commercial dyes, meaning the azo dyes contains the azo group −N=N− as part of their molecules.[1] At the same time, related to their chemical structures, these azo dyes are shared into several categories, in close dependence to the fibres type, for which they have affinity and to the methods by which they are applied respectively.[2] Fig 1.Thermoanalitical curves in air with 10ºC/min-500ºC for ligand and Cu complex Fig.2 Thermoanalitical curves in nitrogen with 10ºC/min-500ºC for ligand and Cu complex Nowdays, azo transition metals chelates have also attracted significant attention due to their interesting electronic and geometrical features in close connection with their application in many different fields. The resulted structures were synthesized in fair yield and characterized by FT-IR, UV-VIS, AAs, thermal analysis in different condition (fig 1,2) and X-ray diffraction techniques.