REMOVAL OF ORGANIC ACID AND/OR INORGANIC ACID FROM DECOMPOSITION PRODUCT PHASE

PROBLEM TO BE SOLVED: To simply remove organic acids and/or inorganic acids from a decomposition product phase by extracting a decomposition product phase from the decomposition product phase produced on the decomposition of an aralkylhydroperoxide with an extractant and then treating the organic portion of the extracted decomposition product phase with an ion exchanger. SOLUTION: This method for removing organic acids and/or inorganic acids from a decomposition product phase comprises extracting a decomposition product phase from the decomposition product phase produced on the decomposition of an aralkylhydroperoxide with at least one extractant, and then treating the organic portion of the extracted decomposition product phase with an ion exchanger. Therein, the organic phase treated with the ion exchanger is at least once distilled preferably in a distillation tower. Therein, at least one mainly aqueous phase containing at least one organic acid is separated from the organic phase, and then treated with the second ion exchanger. The extractant is preferably a mainly aqueous phase treated with a strongly basic anion exchanger.