Determination of Thermodynamic Properties of Under-Researched Liquids Based on Limited Information About Properties

The article considers a method for obtaining information on the thermodynamic properties of under-researched liquids at pressures significantly exceeding atmospheric pressure. The method is the same, but the initial data are different: in one case, only the density, isobaric heat capacity and the speed of sound at atmospheric pressure are known, and in the other, the same parameters, but along the saturation line. The method is based on the assumption of a linear dependence of the specific volume (density) on pressure and temperature in the liquid phase.