Relative permittivities and refractive indices of binary mixtures of cyclohexanone with dichloromethane, trichloromethane, 1,2-dichloroethane, trichloroethene and cyclohexane at T=303.15 K

Relative permittivities, ϵr, and refractive indices, nD, have been measured for binary liquid mixtures of cyclohexanone (C6H10O) with dichloromethane (CH2Cl2), trichloromethane (CHCl3), 1,2-dichloroethane (CH2ClCH2Cl), trichloroethene (CHClCCl2), and cyclohexane (c-C6H12) at T=303.15 K. The values of the deviations of ϵr and nD from values arising from mole fraction average, which are represented respectively by Δϵr and ΔnD have been calculated. Values of ϵr and ΔnD have been fitted by the method of least squares to smoothing equations. Δϵr for the various mixtures has been discussed from the viewpoint of the existence of specific interactions between the components.