2672. PIER, M., AND RUMPF, W. (I. G. Farbenindustrie A. G.). [Oxygenated Organic Compounds From Carbon Monoxide and Hydrogen.] German Patent 568,627, Sept. 16, 1923. Chem. Abs., vol. 27, 1933, p. 2691.

Parts of the apparatus that come into contact with CO are coated with Cr, Mn, Mo, W, or U. This is an addition to German Patents 490,248 and 548,434 (abs. 2679 and 1378).

See also German Patent 559,892 (abs. 1377).