Abstract
A survey is given of selected thermophysical properties of supercritical solvents which have been determined more recently and which may have technical interest. The static dielectric permittivity of water and of supercritical water‐benzene mixtures to 400°C and several 1000 bar is shown. The transport properties viscosity and thermal conductivity of water at high pressures and extending into the supercritical region are discussed. Of binary systems anthracene as a model solute in ten different highly compressed sub‐ and supercritical fluids is discussed and results presented as “enhancement” factors and virial coefficients B12. Critical curves of binary aqueous systems are shown and methods for calculations indicated. The binary systems water‐nitrogen and water‐oxygen were determined to 2000 bar and excess volumes of water‐methane and water‐benzene measured and calculated.

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