Purification of phosphorus compounds

Details Purification of phosphorus compounds Purification of phosphorus compounds

C - Chemistry, Metallurgy

07

F

260/530

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

Patent

CA 2001975

ABSTRACT The content of hydrogen chloride and phosphorous acid of crude amino organic phosphonic acids, especially diethylenetriaminepentakis (methylene phosphonic acid) is reduced by solvent extraction into an alcoholic phase leaving purified phosphonic acid behind.

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