METHOD OF PRODUCING POTASSIUM ACETATE

摘要

FIELD: chemistry. ^ SUBSTANCE: invention relates to a method of producing potassium acetate by reacting potassium hydroxide with aqueous acetic acid solution and subsequent steps for treating the obtained potassium acetate. The method involves filtration treatment of the obtained potassium acetate solution, evaporation of the filtrate at 105-115C, cooling to 55-65C and vacuum crystallisation. The method is characterised by that the starting products used are crystalline potassium hydroxide and 40-60% acetic acid, which is added to potassium hydroxide in 30-35% stoichiometric excess and while keeping temperature of the reaction mass at 80-90C, and that the potassium acetate crystals formed after the vacuum crystallisation step are further centrifuged at 500-2000 rpm and then vacuum dried at 145-155C. ^ EFFECT: method enables to obtain a highly pure product with minimal content of heavy metal impurities. ^ 1 cl, 2 tbl, 11 ex