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Copper oxide is necessary material for production of superconductors. The issue of obtaining high purity and nanosides CuO is actual. This article shows the results on the obtaining of nanodispersed copper oxide by plasma dynamic method in system based on coaxial magneto plasma accelerator with copper electrodes. Such analyses of ultradispersed synthesized products as X-Ray diffractometry, IR-spectroscopy and thermal analysis were carried out. According to XRD such phases as copper Cu, copper oxide (I) Cu[2]O, copper oxide (II) CuO, and copper hydroxide hydrate Cu(OH)[2]xH[2]O were identified in the product. It was found that with the gradual heating of the initial product up to 800°С the phase content changed dramatically in terms of enhancing copper oxide phase (up to 97%).