METHOD FOR PRODUCING beta-MERCAPTOCARBOXYLIC ACID

摘要

This method for producing a beta-mercaptocarboxylic acid represented by general formula (3) involves: a step of obtaining a reaction solution including a compound represented by general formula (2) by reacting, under atmospheric pressure, hydrogen sulfide, an alkali hydroxide represented by the formula XOH (wherein X represents Na or K), and an unsaturated carboxylic acid represented by general formula (1); and a step of neutralizing the reaction solution obtained in the aforementioned step with an acid. The amount of said alkali hydroxide is greater than or equal to the total number of moles of said unsaturated carboxylic acid and said hydrogen sulfide.