PROCESS FOR MAKING SOLID METHYLGLYCINE DIACETATE (MGDA) ALKALI METAL SALT, AND SOLID PARTICLES

A process for making solid methylglycine diacetate (MGDA) alkali metal salt (a) includes:(A) providing a 40 to 60% by weight aqueous solution of the MGDA salt having a temperature in the range of from 50 to 90° C.,(B) adding solid salt (a),(C) heating the resultant slurry until the salt (a) added in...

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Bibliographische Detailangaben
Hauptverfasser: Jaekel, Frank, Mueller, Michael Klemens
Format: Patent
Sprache:eng
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Zusammenfassung:A process for making solid methylglycine diacetate (MGDA) alkali metal salt (a) includes:(A) providing a 40 to 60% by weight aqueous solution of the MGDA salt having a temperature in the range of from 50 to 90° C.,(B) adding solid salt (a),(C) heating the resultant slurry until the salt (a) added in step (B) has dissolved at least partially,(D)allowing salt (a) to crystallize, and(E) removing crystalline salt (a) from the mother liquor.