Alkylethylmethylsulfonium iodide (alkyl : C12H25, C16H33, C18H37) were prepared, refined, and identified by elementary analysis etc.
Physico-chemical properties of aqueous solutions of the above samples were measured. Depressions of the surface tension and durabilities of emulsification of liquid paraffin and wettabilities to cotton cloth were fairly large. The amounts of sedimented CaCO3 in the dilute aqueous solution of the samples tended to decrease with the increase of the length of alkyl chains of the samples. The results indicated that the above samples were excellent as surfactants.
And then, the antibacterial and antimold actions of the samples were examined. From these results obtained, it was recognized that antimicrobial actions of the samples were superior than pentachlorophenol.