Purification method of 4-hydroxybenzoic acid long chain ester

摘要

PROBLEM TO BE SOLVED: To provide a purification method capable of easily removing residues such as a catalyst or a reaction raw material from a crude composition of 4-hydroxy benzoic acid long chain ester and providing high purity 4-hydroxy benzoic acid long chain ester at high yield.SOLUTION: There is provided a purification method of 4-hydroxy benzoic acid long chain ester including a process for dissolving a crude composition containing 4-hydroxy benzoic acid long chain ester represented by the formula (1) into a mixed solution of non polar solvent and alcohol and a process for crystallizing a resulting solution.SELECTED DRAWING: None