Equation of State and Thermodynamic Properties of Saturated and Superheated Mercury Vapors up to $1650$ K and $125$ MPa

Experimental data on the compressibility, sound velocity, and saturation pressures have been generalized for mercury vapor at densities $<3$ g/cm$^2$ based on the equation of state with the second, third, and fourth virial coefficients. The virial coefficients have been calculated using the three-parameter Lennard-Jones potential $m$–6. The data have been generalized using the nonlinear weighted least-squares method. The parameters of the models and their enlarged error matrix taking into account random and systematic (in the first approximation) errors of the experimental data have been determined. Tables of thermodynamic properties of the saturated and superheated vapor have been calculated. The enthalpy drop error has been correctly calculated on the isentropic curve of the superheated vapor taking into account covariations of the equation of state parameters.