Abstract: An aqueous solution is prepared by: (a) admixing nitrilotriacetonitrile and aqueous hydrochloric acid to form a first mixture; (b) reacting the nitrilotriacetonitrile and the hydrochloric acid components of the first mixture at 25.degree.-70.degree. C to form a second mixture; and (c) adjusting the pH of the second mixture to about 3-7 by admixing the second mixture and sodium hydroxide, potassium hydroxide, or ammonia to form the aqueous solution. Said solution is useful for reducing the caking tendency of particulate sodium chloride. Said solution is also useful as an additive to systems in which potassium chloride is to be separated from sodium chloride by froth flotation. Said solution is also useful as an inhibitor for inhibiting the crystallization of sodium chloride from brines, including brines encountered in oil well operations.

Abstract: Glycine can be recovered from an aqueous solution of glycine and sodium chloride having a mole ratio of glycine to sodium chloride of about 0.7-5:1 by: (a) adjusting the pH of the starting solution to 4.5-8.5 and evaporating water therefrom and cooling to precipitate glycine and to form a first mother liquor; (b) separating the precipitated glycine from the first mother liquor; and (c) recovering the separated glycine. Sodium chloride can be precipitated from the first mother liquor by evaporating water therefrom to form precipitated sodium chloride and a second mother liquor rich in glycine which can be separated from the precipitated sodium chloride and admixed with a second lot of the aqueous starting solution and processed therewith.

Abstract: Glycine can be recovered from an aqueous starting solution of glycine and sodium sulfate having a mole ratio of glycine to sodium sulfate of about 1-5:1 and a pH of about 4.5-8.

Abstract: .beta.-ALANINE IS RECOVERED FROM A STARTING SOLUTION OF SODIUM CHLORIDE AND .beta.-ALANINE BY: (A) EVAPORATING WATER FROM THE SOLUTION TO PRECIPITATE SODIUM CHLORIDE AND FORM A FIRST MOTHER LIQUOR; (B) SEPARATING THE FIRST MOTHER LIQUOR AND THE PRECIPITATED SODIUM CHLORIDE WHILE THE FIRST MOTHER LIQUOR IS HOT; (C) COOLING THE SEPARATED FIRST MOTHER LIQUOR TO PRECIPITATE .beta.-ALANINE AND FORM A SECOND MOTHER LIQUOR; (D) SEPARATING THE PRECIPITATED .beta.-ALANINE AND THE SECOND MOTHER LIQUOR; AND (E) RECOVERING THE SEPARATED .beta.-ALANINE.If desired, the separated second mother liquor can be admixed with a second lot of the starting solution and processed therewith.