Experimental Determination of Densities and Refractive Indices of the Ternary Mixture 2-Methyl-2-propanol + Cyclohexylamine + n-Heptane at T = (303.15 to 323.15) K
journal contributionposted on 10.02.2011, 00:00 by Ivona R. Radović, Slobodan P. Šerbanović, Bojan D. Djordjević, Mirjana Lj. Kijevčanin
The experimental data of the ternary 2-methyl-2-propanol + cyclohexylamine + n-heptane (densities ρ and refractive indices nD data) and three binary systems: 2-methyl-2-propanol + cyclohexylamine (nD data), 2-methyl-2-propanol + n-heptane (ρ and nD data), and cyclohexylamine + n-heptane (nD data) have been determined. Experimental ρ and nD measurements have been performed simultaneously, at five temperatures, (303.15, 308.15, 313.15, 318.15 and 323.15) K, and atmospheric pressure, using an Anton Paar DMA 5000 digital vibrating-tube densimeter, with a refractometer Anton Paar RXA 156. Excess molar volumes VE and deviations of refractive indices ΔnD were correlated by the Redlich−Kister equation for binary mixtures and the Nagata−Tamura equation for the ternary mixture.