The critical evaluation of compression data for liquids and a revision of the isotherms of mercury

(p,ρ,T) of liquidn-octane obtained with a spherical pycnometer at temperatures of 298.03 K and 313.15 K and pressures in the range 0.7 MPa to 32 MPa

“…(7) Since the compressibility of mercury is small (k T 110 −11 Pa −1 ), we do not place severe demands on our limited knowledge of k T , and we assumed that the compressibility was linear. (4) In our experimental regime, densities of liquid mercury calculated from the chosen expression agreed to better than 0.00007·r with correlations reported by others (8) and do not introduce a significant systematic error.…”

Pressure-Volume-Temperature Measurements on Atactic Polystyrene. A Thermodynamic View

“…The volume change of the enclosed mercury has been calculated, too, by an equation quoted by Bett, Weale, and Newitt. 14 Some difficulties arose in guaranteeing strict hydrostatic conditions for the sample. At last the sample was covered with a Teflon foil and brought into a capsule of thin sheet iron (30 µ ).…”

Recommended Reference Materials for Realization of Physicochemical Properties

“…Mercury is also used for confining the sample and transmitting the pressure in volumetric measurements on fluids at high pressures, and under these conditions a more complex equation for the compressibility may be required. 36 When mercury is used as a manometric fluid, the effect of capillary depression must also be taken into account. 37 -40 Mercury is also frequently used for the determination by weighing of the volumes of vessels.…”