3966.  ----- [WOODHOUSE, J. C.] (E. I. du Pont de Nemours & Co.). Removing Color and Aldehyde From Ketone-Aldehyde-Hydrocarbon Mixtures From the Hydrogenation of Carbon Monoxide. United States Patent 2,076,607, Apr. 13, 1937; appl. filed Oct. 27, 1934. Chem. Zentralb., 1937, II, p. 665; Chem. Abs., vol. 31, 1937, p. 3940.

Mixture is treated with alkali metal such as Ha at 80° for 2 hr. while subjected to vacuum distillation and refluxing.