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Orthoxylene - an organic compound, an aromatic hydrocarbon. It is a colorless liquid miscible with ethanol, diethyl ether, acetone, chloroform and benzene; solubility in water of less than 0.015%.

Xylenes used for the synthesis processes kataliticheskogoriforminga gasoline and pyrolysis gasoline, podvergnutogogidroochistke. To isolate the o-xylene from the resulting smesiizomerov use clear rectification.

Oxidation of o-xylene in the vapor phase at 450-600 ° C (catalyst - V2O5 on SiO2) produced phthalic anhydride. Deep oxidation of o-xylene with nitric acid or oxygen in air in the liquid phase at 100-300 ° C and 4 MPa (catalysts - bromides, Mn or Co), phthalic acid was obtained.

Moreover, o-xylene - solvent varnishes, paints, mastics, high-octane additive for motor fuels.

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