FIELD: chemical industry, more particularly isolation of C8 arenes from xylene fraction of reforming catalyzate. SUBSTANCE: aromatic C8 hydrocarbons are isolated from mixtures with saturated hydrocarbon by azeotropic rectification. selective azeotrope-forming component includes acetonitrile in weight ratio to saturated hydrocarbons of stock from 85:15 to 93:7. EFFECT: greater recovery of xylenes and higher purity of the final product. 3 ex, 1 tbl
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