1512. ------. [I. G. FARBENINDUSTRIE, A. G.] Protecting Apparatus Used for Gas Reactions. British Patent 317, 996. Aug. 29. 1928. Chem. Age. 1929. p. 294; Chem. Abs., vol. 24. 1930, p. 2015.

In carrying out reactions with gases which as H₂, CO, or H₂S, which attack the material of the apparatus, a small quantity of an inert material that remains liquid (such as paraffin added to a middle oil to be hydrogenated) is introduced so that it forms a protective film on the surface of the apparatus. The process may be applied to the synthesis of alcohol.