Basf Se Corporation

Somnath Shivaji Kadam

Alfred Oftring

Thomas Schmidt

Matthias Rauls

Marta Reinoso Garcia

Paul Klingelhoefer

Markus Hartmann

Lothar Karrer

Kati Schmidt

Frank Jaekel

Feelly Ruether

Process for making solid methylglycine diacetate (MGDA) alkali metal salt (a), said process comprising the steps of (A) providing a 35 to 60% by weight aqueous solution of said MGDA salt having a temperature in the range of from 50 to 90&#xb0; C., (B) adding 0.01 to 2% by weight of a particulate solid with a pore volume in the range of from 0.25 to 0.75 cm/g, determined by nitrogen adsorption in accordance with 66134:1998-02 (b), the percentage referring to the content of (a), (C) crystallizing (a), (D) removing said crystalline (a) from the mother liquor.

Process for making solid methylglycine diacetate (MGDA) alkali metal salt, and solid particles

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-isomer with an enantiomeric excess (ee) in the range of from 10 to 75%.

Mixtures of MGDA enantiomers, and process for making such mixtures

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Ludwigshafen, Germany

Somnath Shivaji Kadam