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Return to Abstracts of Patents Return to Abstracts of Patents 1250-1499 Patent Abstracts1337. ------. [I. G. FARBENINDUSTRIE, A. G.] Methanol. British Patent 500,745, Feb. 15, 1939. Chem. Abs., vol. 33, 1939. p. 5869. Synthetic MeOH is purified by treatment with a small quantity of chromic acid, which may be added in aqueous solution at a point in a distillation column at which the MeOH has a considerable H2O content. |