Density and Viscosity of the Ternary System Pinane + n-Dodecane + Methyl Laurate and Corresponding Binary Systems at T = 293.15–333.15 K

Biofuel may be an important component of aviation fuel for its significant advantages. In the present work, two biofuel samples, methyl laurate and pinane, are selected for blending research with n-dodecane, a typical model fuel of aviation kerosene. Densities and viscosities for the ternary system pinane (1) + n-dodecane (2) + methyl laurate (3) and corresponding binary systems have been measured at the temperatures from 293.15 to 333.15 K and atmospheric pressure. The excess molar volume (VmE) and viscosity deviation (Δη) of binary systems have been calculated based on experimental data and fitted to the Redlich–Kister equation, while those of the ternary system have been fitted to Nagata–Tamura, Redlich–Kister, Cibulka, and Singh semiempirical equations, respectively. The values of the excess molar volume are all positive for all investigated systems, while the viscosity deviations are all negative. The results are discussed from the perspective of intermolecular force and the structure. Furthermore, the densities and viscosities of both binary and ternary mixtures are satisfactorily correlated using the Jouyban–Acree model.