This new edition provides a very thorough and careful presentation of modern methods of estimating the physical properties of gases and liquids. Pure gases, pure liquids, multicomponent mixtures of gases and of liquids, and equilibrium multiphase systems are all considered. In the phase equilibria area, solid-liquid and solid-gas systems are included. Properties considered include vapor pressure, critical properties, boiling and freezing points, PVT (pressure-volume-temperature) properties, thermodynamic properties (viscosity, thermal conductivity, diffusion coefficents, and surface tension). Estimation methods are chosen for their accuracy, range of utility, and the availability of needed input data. Methods that are based on a theoretical model of the system are generally preferred. The emphasis on new work is strong, so that in many cases, old familiar methods are omitted. A very extensive database of properties of pure components is provided in the appendixes. Generally, simplicity has been sacrificed to accuracy, so that these methods will not be as easy for the process engineer to use, as was the case with earlier editions. Still, this is a useful, and possibly even vital book for a practicing process engineer; highly recommended for libraries serving them. Graduate students through professionals.