Abstract

It is shown that a modified Bridgman sylphon method can be used to directly measure PVT data of reorientational solids. PVT properties of crystalline benzene are determined from −20 to 51°C to pressures up to 500 MPa (5 kbar). Isochoric paths of solid benzene are found to be linear and parallel in this range. Their mean slope value is in very good agreement with that we previously predicted from Raman spectroscopy experiments. From these results, it can be concluded that thermodynamic behaviour of reorientational crystalline benzene may be described in terms of a cubic crystal equation of state.

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