Fatty acids are known for their importance as major components of oils and fats, representing 96% of their total mass. Fatty alcohols are components of vegetal waxes and can also be found in smaller quantities in vegetable oils and fats. All play an important role in the food industrie and also can be used in the pharmaceutical and chemical industries. Solid-liquid equilibrium data of binary mixtures formed by fatty acid + fatty alcohol mixtures are scarce in the literature. It is possible that there are invariant points such as eutectic, peritectic and metatectic points in these mixtures, as well as solid transitions and solid solution formation at the extremities of the phase diagrams. Therefore, it is interesting to investigate the phase behavior of binary mixtures formed by such substances. Phase diagrams of the following binary mixtures were constructed using the DSC technique: 1-dodecanol + lauric acid, 1-tetradecanol + myristic acid, 1-hexadecanol + palmitic acid and 1-octadecanol + stearic acid. Based on the experimental runs, the uncertainty of the equilibrium data is estimated to not be greater than 0.3 K.
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