Revision of the volumetric method for measurements of liquid–liquid equilibria in binary systems

Binary liquid–liquid equilibrium in the systems containing monofunctional benzene derivates and 1,2-ethanediol

“…The fact that liquid molar volumes of monofunctional benzene derivatives are much higher than that of 1,2-ethanediol causes asymmetrical experimental uncertainties in compositions of the conjugated phases x 1 and x 1 [6]. The experimental x 1 (i.e.…”

“…Reversely, the solubilities of 1,2-ethanediol in the corresponding monofunctional benzene derivates however should be considered as tentative. This fact resulted from the error analysis of the volumetric method [6]. In spite of this, the comparison of results to the independent measurements by the other methods is quite acceptable.…”

“…Most of the LLE measurements were carried out by the volumetric method described in detail in the previous work [6]. For verification of some results, additional measurements by cloudpoint method and direct analytical method were performed.…”

“…Measurement of the liquid-liquid equilibrium by means of the volumetric method was in detail described previously [6]. For this purpose glass ampoules made from precise burettes with volumetric scales (division of 0.1 cm 3 ) were used.…”

“…In case of the 1,2-ethanediol + chlorobenzene system, the phase separation required auxiliary rotation of ampoules. Determination of the liquid phase volumes and calculations of the compositions of conjugated phases were preformed by the procedure [6].…”