| abstract |
An object of the present invention is to provide a method for producing high-purity butyl acetate in which the total concentration of a sulfuric acid-derived substance and sulfuric acid detected by ion chromatographic analysis is extremely low, and the increase in sulfuric acid due to aging is small. When producing butyl acetate by synthesizing butyl acetate from butanol, removing low-boiling fraction and then removing high-boiling fraction, a mixture containing mainly butyl acetate and high-boiling fraction is removed from the side of the low-boiling distillation column. Withdraw and supply to deboiling high distillation column. Alternatively, the top pressure of the deboiling distillation column is controlled at 50 to 700 mmHg, the top temperature is controlled at 40 to 120 ° C, and the bottom temperature is controlled at 70 to 130 ° C. [Selection diagram] Fig. 1 |