Method for producing salts of carboxymethyloxysuccinic acid

Details Method for producing salts of carboxymethyloxysuccinic acid Method for producing salts of carboxymethyloxysuccinic acid

C - Chemistry, Metallurgy

07

C

260/522.2

C07C 59/305 (2006.01)

Patent

CA 1126756

cC 678 ABSTRACT OF THE DISCLOSURE An improved method for the conversion of alkaline earth metal carboxymethyloxysuccinates to trialkali- metal carboxymethyloxysuccinate is disclosed wherein certain carbonate, bicarbonate, sesquicarbonate and hydroxide species are utilized and the pH is regulated to about 10 to about 11.5. The product so produced is low in calcium impurities and contains substantially no sulfate impurities.

339867

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