Phosphonates

Details Phosphonates Phosphonates

C - Chemistry, Metallurgy

07

F

260/500, 260/501

C07F 9/38 (2006.01) C02F 5/14 (2006.01)

Patent

CA 1231963

A B S T R A C T The stability of aqueous solutions of diethylene triamine penta (methylene phosphonic) acid, comprising at lest 20% by weight of active material,is improved if the acid is partially neutralised. The major part e.g 55 to 85% by weight of the acid is preferably diethylenetriaminepenta(methylenephosphonic) acid itself. The preferred products are derived by neutralising from 10 to 30% of the replaceable hydrogen with sodium potassium or ammonium ions. The salt solutions are less corrosive than known products to which mineral acid has been added.

450424

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