527.    ---------------.  [CHEMICAL INDUSTRIES.]   From Wood Distillation to Oxo.  Vol. 66, No. 6, 1950, p. 826.

                  Tennessee Eastman Corp. has been producing a small amount of isobutyraldehyde as a byproduct from its Oxo pilot plant.  A petrochemical plant is being constructed at Longview, Tex.  The major product is to be n-butyric acid for the production of Tenite II, a cellulose acetate-butyrate plastic.  The process to be used is a modification of the Oxo synthesis.  Propylene (presumably produced by propane cracking) will be reacted with a mixture of CO and H₂ to form a mixture of n-butyraldehyde and isobutyraldehyde.  These will be fractionated, and oxidation of the latter compound will give n-butyric acid.