VOLUME CHANGES ON MIXING 2 LIQUIDS - REVIEW OF THE EXPERIMENTAL-TECHNIQUES AND THE LITERATURE DATA

Various experimental techniques used for determining density of pure liquids and their mixtures and for volume changes on mixing (VE) are reviewed. Some guidelines are given for precise determination of VE and for correlating the data to a suitable smoothing function. The available literature data on VE for the test system cyclohexane + benzene is critically evaluated and a smoothing equation is given which represents the three best sets of VE data (a total of 164 points) for the test system, with a standard deviation of 0.0016 cm3 mol-1. A table gives smoothed VE data over the entire mole fraction range for about 1000 mixtures, most of them at more than one temperature, reported over the last ten years. Other important information included in the table is the method and temperature(s) of measurement, number of data points, and shape of the VE against mole fraction curve. Finally a brief summary is given of the noteworthy observations reported in the literature. © 1979.