Calculations indicate that the high reflux ratio and the large number of plates which are required make the operation impractical. Mixtures which are richer in acetylmethylcarbinol than is the azeotrope can be fractionally distilled to carbinol and azeotrope with comparative ease. The product made by the vapor-phase oxidation of butylene glycol was a mixture of this type in that the carbinol-water ratio was high.
ACKNOWLEDGMENTThe authors gratefully acknowledge the assistance of the Analytical and Physical Chemical Division of this laboratory in conducting some of the analyses.
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