Non-alkaline purification of aminophosphonic acids

Details Non-alkaline purification of aminophosphonic acids Non-alkaline purification of aminophosphonic acids

C - Chemistry, Metallurgy

07

F

C07F 9/38 (2006.01) C07F 9/02 (2006.01) C07F 9/6524 (2006.01)

Patent

CA 2175221

A process for the purification of aminophosphonic acids under non-alkaline conditions is described. In particular, aminophosphonic acids are slurred in neutral or acidic water, heated to reflux, cooled and then filtered. Product purities approaching 100 % are thus obtained.

L'invention concerne un procédé de purification d'acides aminophosphoniques dans des conditions non alcalines. En particulier, on forme une pâte épaisse d'acides aminophosphoniques dans une eau neutre ou acide, on la chauffe au reflux, on la refroidit et ensuite on la filtre. On obtient ainsi un produit ayant une pureté approchant 100 %.

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