PROCESS FOR THE PREPARATION OF AQUEOUS SODIUM METHIONINATE SOLUTIONS AND USE OF THOSE SOLUTIONS IN THE PRODUCTION OF A GRANULATE

摘要

The invention relates to a process for the preparation of aqueous sodium methioninate solutions having a low sodium carbonate content from the crude hydrolysis mixtures obtained in the hydrolysis of 5-(.beta.-methylmercaptoethyl)-hydantoin with from 1.1 to 6 equivalents of sodium hydroxide and/or sodium carbonate, by separating off sodium carbonate monohydrate while heating, and to granulates subsequently prepared from those solutions by various processes.