1768. JOHNSON, C. E. (Standard Oil Co. of Indiana). Extraction of Oxygenated Organic Compounds From Aqueous Solutions Thereof. United States Patent 2,446,231, Aug. 3, 1948; appl. filed Dec. 22, 1945, Serial No. 636,939; 9 claims (Cl. 260-450). Chem. Abs., vol. 42, 1948, p. 7903.

Oxygenated organic compounds in diluted aqueous solution such as obtained in the Fischer-Tropsch process, may be recovered by extraction with a disulfide of the type RSSR', where R and R' are hydrocarbon groups, and subsequent fractionation of the disulfide solution.