Method for purifying organic solvent and apparatus for purifying organic solvent

Abstract

Provided are a method for purifying an organic solvent and an apparatus for purifying an organic solvent, which are capable of reducing, as much as possible, the amounts of various types of impurities such as metal impurities contained in an organic solvent. The method for purifying an organic solvent includes an anion exchanger contact step in which an organic solvent to be purified is brought into contact with an anion exchanger A and an anion exchanger B, wherein the anion exchanger A is an anion exchanger having at least one ionic form selected from the group consisting of OH form, free base form, carbonate form, and bicarbonate form, and the anion exchanger B is a chelate resin containing a glucamine-type ion exchange group.

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