Saturation Properties for Propane — Temperature Increments

• Liquid Phase Data
• Vapor Phase Data
• Auxiliary Data
• References and Notes
• Notes
• Other Data Available:
  • Use the interactive display. (requires JavaScript / HTML 5 canvas capable browser).
  • Download data as a tab-delimited text file.
  • Main NIST Chemistry WebBook page for this species.
  • Recommended citation for data from this page.
  • Fluid data for other species

Liquid Phase Data

Data on Saturation Curve

Vapor Phase Data

Data on Saturation Curve

Auxiliary Data

Reference States, IIR Convention

Additional fluid properties

References and Notes

Equation of state

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

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., 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

Dielectric constant

Metling line

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.

Notes

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
• The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
• Customer support for NIST Standard Reference Data products.