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Φ-Sulfo Fatty Methyl Esters sulfonates (Φ-MES) were obtained via sulfoxidation of fatty acid methyl esters (FAME) with SO 2 , O 2 , and ultraviolet light of appropriate wavelength. Expectedly, these products may be used as linear alkylbenzene sulfonate (LAS) and alkyl ether sulfate (AES) partners, either in heavy-duty or in hand dishwashing liquids. Φ-MES are new anionic surfactants that can be regarded as potential components for detergent formulations and body care products as well. In this work we summarize the most relevant results of our research started fifteen years ago, on the synthesis, separation and analysis of Φ-sulfo fatty methyl ester sulfonates known as Φ-MES, and we update our last findings. We have to point out that we are for the time being, the only research group in the world to have published our research on Φ-MES. This paper describes the optimum batch conditions for the sulfoxidation of FAME and a reaction mechanism is proposed. The paper depicts an improved workup for the separation of reaction products from non reacted methyl ester and the GC-MS analysis of Φ-sulfo fatty methyl ester sulfonate is shown. Finally, an interpretation of conversion and selectivity of sulfoxydation reaction is given.

A Process for the Production of Φ-Sulfo Fatty Methyl Ester Sulfonates (Φ-MES)