摘要：

Disclosed is a method for producing an alpha-sulfofatty acid alkyl ester comprising a step for obtaining a sulfonated product by sulfonating a fatty acid alkyl ester, an aromatic compound adding step wherein an aromatic compound is added to the sulfonated product, and an esterification step wherein an alcohol having 2 or more carbon atoms is added thereto for having the sulfonated product react with the alcohol. The esterification step is conducted after or concurrently with the aromatic compound adding step.

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