Title: Method for purifying barium ester
Application Number: 87100989 Application Date: 1987.02.27
Publication Number: 1013531 Publication Date: 1987.09.30
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: B01D11/04;C01F11/18
Applicant(s) Name: Societe Rhone-Poulenc Chimie (FR) 25, Quai Paul Do Address:
Inventor(s) Name: Alain Rollat;Jean-Louis Sabot
Attorney & Agent: WU DAJIAN QUAN JING
Abstract:
    Purified barium salts essentially devoid of strontium impurities, e.g., highly pure barium carbonate, are produced by liquid/liquid extracting an aqueous solution of impure barium values with an organic solvent medium which comprises at least one water-insoluble carboxylic acid, phosphonic acid monoester, or substituted 8-hydroxyquinoline extractant. The mixture of extraction is separated into a purified aqueous phase containing the desired barium salt values and an organic phase containing the impurity values sought to be removed.
Time: 6