Research note : Miscibility behaviour of binary mixtures of benzyl benzoate and liquid paraffin

Abstract

Miscibility of binary mixtures of benzyl benzoate and liquid paraffin as functions of temperature and composition has been determined using phase separation method. The binary mixtures demonstrated a critical (upper) solution temperature of 35 °C at 101325 Nm-2 with a mixing gap. A tie-line drawn at 28 °C across the phase diagram indicated that benzyl benzoate at concentrations between 38% and 77% remained practically immiscible with liquid paraffin due to phase saturation, while phase separation will occur in a solution containing a binary mixture of 25% benzyl benzoate in liquid paraffin stored at temperatures lower than 18 °C.

Keywords: Benzyl benzoate, liquid paraffin, binary mixtures, temperature-composition miscibility, phase diagram.

Ife Journal of Science Vol. 8 (2) 2006: pp. 203-205