Chemical process

Details Chemical process Chemical process

C - Chemistry, Metallurgy

07

F

C07F 9/36 (2006.01) C07F 9/24 (2006.01) C07F 9/44 (2006.01) C07F 9/547 (2006.01) C22B 3/16 (2006.01) C22B 3/38 (2006.01)

Patent

CA 2097158

ABSTRACT CHEMICAL PROCESS A process for extracting metal values especially zinc values from aqueous solutions of metal salts which comprises contacting the aqueous solution with an organic phase comprising a compound of the formula: Image I wherein each of R1, R2, R3 and R4, independently, represents an optionally substituted hydrocarbyl or hydrocarbyloxy group or R1 and R2 together with the attached phosphorus atom and/or R3 and R4 together with the attached phosphorus atom form a 5- to 8-membered heterocyclic ring.

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