FIELD: chemical industry. SUBSTANCE: described is method of preparing alkali metal and N-acyl-aminoacid which comprises reacting fatty acid of formula RCOOH wherein R is substituent containing C1-C20 carbon atoms with aminoacid salt with alkali metal (in this compound amino group is substituted with at least one hydrogen atom) and with said aminoacid. EFFECT: simplified process, environment remaining unchanged. 9 cl, 7 ex
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