Abstract
The experimental liquid–liquid equilibrium data of the system β–caryophyllene(1) + 1-propanol(2) + water(3) at temperatures 303.15, 313.15, and 323.15 K are presented. The mixtures of β–caryophyllene + 1-propanol + water were stirred for 4 hours and settled for at least 20 hours at constant temperature. The samples taken from both phases were analyzed by a gas chromatography (GC). The experimental equilibrium data were correlated by NRTL and UNIQUAC models. The compatibility of the models is based on the value of root mean square deviation (RMSD). The liquid-liquid phase diagram of the system shows type I phase behavior, where two binary subsystems are miscible and only one binary subsystem is partially miscible. The temperature effect of this system on immiscible zone is very small. Based on the experiment and the calculation results, the ternary equilibrium data have been successfully represented using both the NRTL and the UNIQUAC models.
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