Saturation Properties for Propane — Temperature Increments

Fluid Data

Data on Saturation Curve

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Auxiliary Data

Reference States, IIR Convention

Additional fluid properties

References and Notes

Equation of state

Lemmon, E.W.; McLinden, M.O.; Wagner, W., Thermodynamic Properties of Propane. III. A Reference Equation of State for Temperatures from the Melting Line to 650 K and Pressures up to 1000 MPa, J. Chem. Eng. Data, 2009, 54, 12, 3141-3180, https://doi.org/10.1021/je900217v . [all data]

Lemmon, E.W., McLinden, M.O., and Wagner, W., "Thermodynamic Properties of Propane. III. A Reference Equation of State for Temperatures from the Melting Line to 650 K and Pressures up to 1000 MPa," J. Chem. Eng. Data, 54:3141-3180, 2009.

The uncertainties below 350 K in density are 0.01% in the liquid phase and 0.03% in the vapor phase (including saturated states for both phases). The liquid phase value also applies at temperatures greater than 350 K (to about 500 K) at pressures greater than 10 MPa. In the extended critical region, the uncertainties increase to 0.1% in density, except very near the critical point where the uncertainties in density increase rapidly as the critical point is approached. However, in this same region, the uncertainty in pressure calculated from density and temperature is 0.04%, even at the critical point.

The uncertainties in the speed of sound are 0.01% in the vapor phase at pressures up to 1 MPa, 0.03% in the liquid phase between 260 and 420 K and 0.1% in the liquid phase at temperatures below 260 K. The uncertainty in vapor pressure is 0.02% above 180 K, 0.1% between 120 and 180 K, and increases steadily below 120 K. Below 115 K, vapor pressures are less than 1 Pa and uncertainty values might be as low as 3% at the triple point. Uncertainties in heat capacities are 0.5% in the liquid phase, 0.2% in the vapor phase, and higher in the supercritical region.

Auxillary model, Cp0

Lemmon, E.W., McLinden, M.O., and Wagner, W., 2009.

Auxillary model, PX0

Lemmon, E.W., McLinden, M.O., and Wagner, W., 2009.

Auxillary model, PH0

Lemmon, E.W., McLinden, M.O., and Wagner, W., 2009.

Viscosity

Vogel, E.; Herrmann, S., New Formulation for the Viscosity of Propane, J. Phys. Chem. Ref. Data, 2016, 45, 043103, https://doi.org/10.1063/1.4966928 . [all data]

The viscosity at low pressures (< 0.2 MPa) has an expanded uncertainty (at 95% confidence) of 0.5% for 273 < T < 625 K. The uncertainty is 1.5% for the vapor phase at subcritical temperatures T = 273 K as well as in the supercritical thermodynamic region T = 423 K at pressures up to 30 MPa. For additional information on uncertainty consult the referenced manuscript.

Thermal conductivity

Marsh, K.N.; Perkins, R.A.; Ramires, M.L.V., Measurement and Correlation of the Thermal Conductivity of Propane from 86 K to 600 K at Pressures to 70 MPa, J. Chem. Eng. Data, 2002, 47, 4, 932-940, https://doi.org/10.1021/je010001m . [all data]

Marsh, K., Perkins, R., and Ramires, M.L.V., "Measurement and Correlation of the Thermal Conductivity of Propane from 86 to 600 K at Pressures to 70 MPa," J. Chem. Eng. Data, 47(4):932-940, 2002.

Uncertainty in thermal conductivity is 3%, except in the critical region and dilute gas which have an uncertainty of 5%.

Auxillary model, the thermal conductivity critical enhancement

Marsh, K., Perkins, R., and Ramires, M.L.V., 2002.

Surface tension

Mulero, A.; Cachadiña, I.; Parra, M.I., Recommended Correlations for the Surface Tension of Common Fluids, J. Phys. Chem. Ref. Data, 2012, 41, 4, 043105, https://doi.org/10.1063/1.4768782 . [all data]

Dielectric constant

Harvey, A.H.; Lemmon, E.W., Method for Estimating the Dielectric Constant of Natural Gas Mixtures, Int. J. Thermophys., 2005, 26, 1, 31-46, https://doi.org/10.1007/s10765-005-2351-5 . [all data]

Metling line

Reeves, L.E.; Scott, G.J.; Babb, S.E., Jr., Melting Curves of Pressure-Transmitting Fluids, J. Chem. Phys., 1964, 40, 12, 3662-3666, https://doi.org/10.1063/1.1725068 . [all data]

Reeves, L.E., Scott, G.J., and Babb, S.E., Jr., "Melting Curves of Pressure-Transmitting Fluids," J. Chem. Phys., 40(12):3662-6, 1964.

Coefficients have been modified, 2004.

Vapor pressure

Gao, K. and Lemmon, E.W., 2017.

Functional Form: P=Pc*EXP[SUM(Ni*Theta^ti)*Tc/T] where Theta=1-T/Tc, Tc and Pc are the reducing parameters below, which are followed by rows containing Ni and ti.

Saturated liquid density

Functional Form: D=Dc*[1+SUM(Ni*Theta^ti)] where Theta=1-T/Tc, Tc and Dc are the reducing parameters below, which are followed by rows containing Ni and ti.

Saturated liquid volume

Gao, K. and Lemmon, E.W., 2017.

Functional Form: D=Dc*EXP[SUM(Ni*Theta^ti)] where Theta=1-T/Tc, Tc and Dc are the reducing parameters below, which are followed by rows containing Ni and ti.

The fluid data above is also available from the NIST Reference Fluid Thermodynamic and Transport Properties Database. This product includes additional features not available from this web site.

Notes