Isobaric expansivities of the binary mixtures C3H7(OH) + CnH2n + 2 (n = 11, 12) between 288.15 and 318.15 K

Abstract

Densities and refractive indices of the binary mixtures of propan-1-ol with n-undecane and with n-dodecane at 288.15, 298.15, 308.15 and 318.15 K have been determined as a function of the concentration of the n-alkanol. The results were employed in order to determine the mean thermal expansion coefficients, both of the pure compounds and of their mixtures by using, on the one hand, the basic expression α= −(∂ ln ϱ/∂t)p and, on the other, certain empirical expressions arising from the definitions of specific refraction given by Gladstone and Dale, Lorentz and Lorenz and Eykman. The results obtained for αE are also discussed.