Patent ID: 10189772

Abstract:
Mixtures comprise (A) 90 to 99.9% by weight of a mixture of L- and D-enantiomers of methyl glycine diacetic acid (MGDA) or its respective mono-, di- or trialkali metal or mono-, di- or triammonium salts, said mixture containing predominantly the respective L-enantiomer with an enantiomeric excess (ee) in the range of from 10 to 99%, and (B) in total 0.1 to 10% by weight of the diacetic acid derivative of at least one amino acid selected from valine, leucine, isoleucine, and tyrosine, as free acids or respective mono-, di- or trialkali metal or mono-, di- or triammonium salts, percentages referring to the sum from (A) and (B).