Density measurements of methyl fluoride at high pressures and temperatures

The densities of methyl fluoride were reported at T = (298.15 to 573.15) K and at p = (10 to 300) MPa. Experiments were performed with a thin-walled sample holder which was under equal pressure, both inside and outside. The volume change of the sample was determined with a separation system at T = 298.15 K by making use of a float on mercury and a linear variable differential transformer. The density of methyl fluoride varies in this region ρ = (2.218 to 29.602) mol · dm−3. The uncertainty of data for densities was estimated to be better than ±0.37%. The experimental data are described by the Tait equation.