Abstract
The slopes of isochors and isotherms as they cross the unit compressibility line are found to constitute a corresponding property for many fluids over a wide range of densities extending from dilute gases to compressed liquids. This correspondence is represented by a simple function, and its consequences for equations of state are examined. In particular, a new interrelation among the virial coefficients is derived. The interrelation is tested for the Lennard-Jones 12,6 intermolecular potential, and the agreement permits an estimation of this potential's previously unknown sixth virial coefficient as a function of temperature.
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