580. ------. [DU PONT DE NEMOURS, E. I., & Co.] [Catalysts for Organic Synthesis.] French Patent 635,777. June 10, 1927. Schmidt. J., Das Kohlenoxyd. Akad. Verlagsgesell., Leipzig 1950, p. 205: Chem. Abs., vol. 22. 1928. p. 4535.

Patent Abstracts

Catalysts for the synthesis or organic compounds are made by heating to redness mixtures or compounds containing sexivalent Cr and 1 or more of the metals, Zn, Cu, Cd, Mg, Mn, Ag, and Fe to form Cr salts containing tervalent Cr. See also British Patent 301,806 (abs. 2029) and United States Patent 1,746,783 (abs. 2025).