Process for preparing n,n-diacetic acid...

Details Process for preparing n,n-diacetic acid... Process for preparing n,n-diacetic acid...

C - Chemistry, Metallurgy

07

F

260/501.5

C07F 9/38 (2006.01)

Patent

CA 1240338

IMPROVED PROCESS FOR PREPARING N,N-DIACETIC ACID AMINOMETHYLENEPHOSPHONIC ACID Abstract An energy saving process for preparing N,N-diacetic acid aminomethylenephosphonic acid by reacting an alkali metal salt of iminodiacetic acid in aqueous strong mineral acid solution with phosphorous acid and formaldehyde and then adding sufficient water to dissolve the alkali metal salt formed during the reaction. The desired product is recovered as a precipitate from the solution.

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