The phase can be determined by noting the sharp decrease in density between two successive temperature entries all lines above this point refer to the liquid phase, and all lines below refer to the gas phase. A duplicate entry in the isobar section indicates a phase transition (liquid-vapor) at that temperature property values are then given for both phases. Following the saturation tables, values are given as a function of temperature for several isobars. Two lines are given for each temperature (except at the critical point) the first line gives the values of the liquid phase (note the high density) and the second line gives the values of the vapor phase (at low densities). The final line gives the properties at the critical point. The first two points are the properties at the triple point. Values are first given along the saturation line. The references should be consulted for information on the uncertainties and the reference states for E, H, and S. Not all properties are included for every substance. All extensive properties are given on a mass basis. The properties tabulated are pressure (P), density (ρ), enthalpy (H), entropy (S), isochoric heat capacity (Cv), isobaric heat capacity (Cp), speed of sound (u), viscosity (η), thermal conductivity (λ), and dielectric constant (D). These tables give thermodynamic and transport properties of a variety of fluids, as generated from the equations of state presented in the references below.
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