805. GIESEN, J., HANISCH, H., AND GERICKE, P. H. (I. G. Farbenindustrie A. G.). [Purification of Methanol.] German Patent 720,733. Apr. 9, 1942 (Cl. 12 o-5.01). Chem. Abs., vol. 37, 1943. p. 2392.

Patent Abstracts

805. GIESEN, J., HANISCH, H., AND GERICKE, P. H. (I. G. Farbenindustrie A. G.). [Purification of Methanol.] German Patent 720,733. Apr. 9, 1942 (Cl. 12 o-5.01). Chem. Abs., vol. 37, 1943. p. 2392.

Synthetic MeOH is purified by distillation in the presence of slight amounts of chromic acid. The latter is fed into approximately the middle of the column in such quantities that the H₂O collecting at the bottom of the column is nearly neutral.

See also British Patent 500,745 (abs. 1337) and United States Patent 2,242,463 (abs. 806).