Method for the preparation of carboxymethyloxy- succinic acid

Details Method for the preparation of carboxymethyloxy- succinic acid Method for the preparation of carboxymethyloxy- succinic acid

C - Chemistry, Metallurgy

07

C

260/522.2

C07C 59/305 (2006.01)

Patent

CA 1109485

ABSTRACT OF THE DISCLOSURE Carboxymethyloxysuccinic acid of improved purity may be prepared from its calcium salt by first precipitating the calcium as calcium carbonate by reaction with sodium carbonate, removing the calcium carbonate, acidifying the resulting solution of the sodium salt with sulfuric acid, extracting the free acid with a C4 or C5 alcohol or cyclo- hexanol and recovering the purified acid from the alcohol extracts.

327570

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