PATENT

3965.  ----- [WOODHOUSE, J. C.] (E. I. du Pont de Nemours & Co.). Formic Acid. United States Patent 2,001,659, May 14, 1935. Chem. Abs., vol. 29, 1935, p. 4379.

Preparation of HCOOH from CO and steam is effected in the presence of a volatile inorganic acid catalyst such as Cl or HCl which may be continuously formed in situ, in the presence of activated charcoal.

See British Patents 406,344 (abs. 581) and 406,345 (abs. 582).