Abstract
In order to confirm the existence of regions I and II in aqueous solutions of butoxyethanol(BE), the concentration and temperature dependences of enthalpies of mixing of aqueous BE solutions with some organic solvents were measured. It has been found that the increments of apparent enthalpies of mixing per mole of water with respect to the mole fraction of BE change irregularly at a certain concentration. This concentration nearly corresponds to the reported boundary between regions I and II. Although similar behavior has also been observed in aqueous solutions of iso-butoxyethanol, aqueous solutions oftert-butoxyethanol have shown no anomalous behaviors.
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Nakayama, H., Kanenaga, H. & Fujioka, T. The Study of Water Structure in Aqueous Solutions of Butoxyethanol by Enthalpy of Mixing Measurements. Journal of Thermal Analysis and Calorimetry 64, 193–199 (2001). https://doi.org/10.1023/A:1011545331386
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DOI: https://doi.org/10.1023/A:1011545331386