Flow Calorimeter Measurements of Binary Heats of Mixing for Liquid Normal, Primary Alcohols in Normal Alkanes

A steady-flow calorimeter assembled to measure the heats of mixing of binary mixtures is described. Its performance is compared to the batch and semibatch procedures conventionally used. The data in the 0.1- to 0.9-volume fraction range were determined and compared to literature values. An accuracy of ±5% is obtained and the data reported are satisfactory for most engineering calculations. Heats of mixing data for 1-hexanol-n-heptane, 1-decanol-n-heptane, 1-butanol-n-undecane, and 1-hexanol-n-undecane binaries at 35° and 45° C. are reported. © 1966, American Chemical Society. All rights reserved