Vapour-liquid phase equilibria of n-alkanes by direct Monte Carlo simulations

We report results of direct Monte Carlo simulations of n-pentane and n-decane at the liquid vapour interface for a number of temperatures. The intermolecular interactions are modeled using the last version of the anisotropic united atom model (AUA4). We have used the local long range correction energy and an algorithm allowing to select randomly with equal probability two different displacements. The liquid and vapour densities are in excellent agreement with experimental data and with those previously calculated using the GEMC method.