Values of solid-liquid equilibrium (SLE) for the organic binary mixtures of {n-octadecane (1) + myristic acid (2)} (eutectic temperature T-E = 299.65 K, eutectic composition x(1E) = 0.897, latent heat of melting of eutectic mixture DfusHE = 236 J g(-1)), {n-octadecane (1) + palmitic acid (2)} (T-E = 300.35 K, x(1E) = 0.950, DfusHE = 238 J g(-1)) were measured in this study using differential scanning calorimetry (DSC). Simple eutectic behaviour is observed for these systems. The experimental and predicted solid-liquid phase diagrams investigated in this work are characterised by positive deviations from ideality (gamma > 1). The experimental data are correlated as functions of the temperature using non-ideal solution models, namely, the Buchowski (lambda h) equation, UNIQUAC, and UNIFAC models, respectively, and satisfactory results are presented. (C) 2016 Elsevier Ltd.