Liquid-Liquid Equilibria, Equilibrium Phase Densities, and Refractive Indices for the Quaternary Mixtures Containing 2-Propanol or 2-Methyl-2-Propanol of Fuel Oxygenate at T = 298.15 and 318.15 K Jiang, X.L.; Chen, P.Y.; Tu, C.H.; Journal of Chemical & Engineering Data 2016, 61, 2098-2104