General Equation for Correlating the Thermophysical Properties of n-Paraffins, n-Olefins, and Other Homologous Series. 2. Asymptotic Behavior Correlations for PVT Properties

In this second in a series of three papers, asymptotic behavior correlations (ABCs) are presented for PVT-related properties: normal boiling and melting point, critical temperature, pressure, and volume, acentric factor, liquid molar volume, and vapor pressure. The theoretical basis for the asymptotic behavior of these properties is discussed. The correlations were developed using literature data for n-paraffins and n-olefins (1-alkenes) and give accurate and consistent predictions. They are preferable to existing correlations in most instances. For melting point and liquid density, comparisons are made with high molecular weight, linear polyethylenes. It is also demonstrated that the ABCs developed for n-paraffins and n-olefins can be used to estimate the properties of other higher carbon-number n-alkyl derivatives, if the properties are known for at least one lower carbon-number member of the homologous series.