Liquid-Liquid Coexistence Curves and Turbidity Measurements of Benzonitrile plus Tridecane in the Critical Region

Liquid-liquid coexistence curves and turbidity measurements for the binary fluid mixture of {benzonitrile + tridecane} were conducted, from which the corresponding critical exponents and critical amplitudes were obtained. It was found that the critical exponents were in accordance with the theoretic predictions and the critical amplitudes supported the well-known two-scale-factor universality. Moreover, the coexistence curve plotted with temperature against mole fraction was found to be well-represented by the formulism proposed by Gutkowski et al. in the frame of the crossover theory, and the asymmetry of its diameter confirmed the complete scaling theory.