Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

Pentane

Data at NIST subscription sites:

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.


Phase change data

Go To: Top, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Kenneth Kroenlein director
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tboil309.2 ± 0.2KAVGN/AAverage of 82 out of 95 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus143.4 ± 0.7KAVGN/AAverage of 30 out of 32 values; Individual data points
Quantity Value Units Method Reference Comment
Ttriple143.46 ± 0.05KAVGN/AAverage of 6 values; Individual data points
Quantity Value Units Method Reference Comment
Tc469.8 ± 0.5KAVGN/AAverage of 27 out of 31 values; Individual data points
Quantity Value Units Method Reference Comment
Pc33.6 ± 0.6barAVGN/AAverage of 20 values; Individual data points
Quantity Value Units Method Reference Comment
Vc0.311l/molN/AAmbrose and Tsonopoulos, 1995 
Vc0.3098l/molN/AAftienjew and Zawisza, 1977Uncertainty assigned by TRC = 0.0003 l/mol; TRC
Vc0.295l/molN/ABeattie, Levine, et al., 1951Uncertainty assigned by TRC = 0.006 l/mol; TRC
Vc0.31482l/molN/ASage and Lacey, 1942Uncertainty assigned by TRC = 0.0031 l/mol; TRC
Quantity Value Units Method Reference Comment
rhoc3.22 ± 0.07mol/lAVGN/AAverage of 14 values; Individual data points
Quantity Value Units Method Reference Comment
Deltavap26.5 ± 0.6kJ/molAVGN/AAverage of 11 values; Individual data points

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
25.79309.2N/AMajer and Svoboda, 1985 
26.200298.15N/AMesserly and Kennedy, 1940P = 68.68 kPa; DH
26.7323.N/APfohl, Riebesell, et al., 2002Based on data from 308. - 423. K.; AC
29.8238.AStephenson and Malanowski, 1987Based on data from 223. - 352. K.; AC
32.3208.AStephenson and Malanowski, 1987Based on data from 143. - 223. K.; AC
26.1365.AStephenson and Malanowski, 1987Based on data from 350. - 422. K.; AC
26.2433.AStephenson and Malanowski, 1987Based on data from 418. - 470. K.; AC
27.9284.EBStephenson and Malanowski, 1987Based on data from 269. - 341. K. See also Osborn and Douslin, 1974.; AC
25.5310.N/ADas, Reed, et al., 1977AC
23.350.N/ADas, Reed, et al., 1977AC
19.7390.N/ADas, Reed, et al., 1977AC
15.1430.N/ADas, Reed, et al., 1977AC
8.5460.N/ADas, Reed, et al., 1977AC

Enthalpy of vaporization

ΔvapH = A exp(-αTr) (1 − Tr)β
    ΔvapH = Enthalpy of vaporization (at saturation pressure) (kJ/mol)
    Tr = reduced temperature (T / Tc)

View plot Requires a JavaScript / HTML 5 canvas capable browser.

Temperature (K) 260. - 428.
A (kJ/mol) 37.01
alpha -0.1238
beta 0.4121
Tc (K) 469.6
ReferenceMajer and Svoboda, 1985

Entropy of vaporization

DeltavapS (J/mol*K) Temperature (K) Reference Comment
87.88298.15Messerly and Kennedy, 1940P; DH

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

View plot Requires a JavaScript / HTML 5 canvas capable browser.

Temperature (K) A B C Reference Comment
268.8 - 341.373.98921070.617-40.454Osborn and Douslin, 1974Coefficents calculated by NIST from author's data.

Enthalpy of sublimation

DeltasubH (kJ/mol) Temperature (K) Method Reference Comment
42.0143.BBondi, 1963AC

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Reference Comment
8.401143.47Messerly, Guthrie, et al., 1967DH
8.4149143.46Messerly and Kennedy, 1940DH
8.4143.5Acree, 1991AC
8.376143.4Parks and Huffman, 1930DH

Entropy of fusion

DeltafusS (J/mol*K) Temperature (K) Reference Comment
58.56143.47Messerly, Guthrie, et al., 1967DH
58.66143.46Messerly and Kennedy, 1940DH
58.41143.4Parks and Huffman, 1930DH

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


References

Go To: Top, Phase change data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Ambrose and Tsonopoulos, 1995
Ambrose, D.; Tsonopoulos, C., Vapor-Liquid Critical Properties of Elements and Compounds. 2. Normal Alkenes, J. Chem. Eng. Data, 1995, 40, 531-546. [all data]

Aftienjew and Zawisza, 1977
Aftienjew, J.; Zawisza, A., High-pressure liquid vapour-equilibria, critical state and p(V,T,x) up to 503.15 and 4.560 MPa for n-pentane + n-perfluoropentane, J. Chem. Thermodyn., 1977, 9, 153-165. [all data]

Beattie, Levine, et al., 1951
Beattie, J.A.; Levine, S.W.; Douslin, D.R., The vapor pressure and critical constants of normal pentane, J. Am. Chem. Soc., 1951, 73, 4431. [all data]

Sage and Lacey, 1942
Sage, B.H.; Lacey, W.N., Phase equilibria in hydrocarbon systems. Thermodynamic properties of n- pentane., Ind. Eng. Chem., 1942, 34, 730-737. [all data]

Majer and Svoboda, 1985
Majer, V.; Svoboda, V., Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]

Messerly and Kennedy, 1940
Messerly, G.H.; Kennedy, R.M., The heat capacity and entropy, heats of fusion and vaporization and the vapor pressure of n-pentane, J. Am. Chem. Soc., 1940, 62, 2988-2991. [all data]

Pfohl, Riebesell, et al., 2002
Pfohl, Oliver; Riebesell, Christine; Dohrn, Ralf, Measurement and calculation of phase equilibria in the system n-pentane + poly(dimethylsiloxane) at 308.15--423.15 K, Fluid Phase Equilibria, 2002, 202, 2, 289-306, https://doi.org/10.1016/S0378-3812(02)00123-1 . [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Osborn and Douslin, 1974
Osborn, Ann G.; Douslin, Donald R., Vapor-pressure relations for 15 hydrocarbons, J. Chem. Eng. Data, 1974, 19, 2, 114-117, https://doi.org/10.1021/je60061a022 . [all data]

Das, Reed, et al., 1977
Das, Tarun R.; Reed, Charles O.; Eubank, Philip T., PVT surface and thermodynamic properties of n-pentane, J. Chem. Eng. Data, 1977, 22, 1, 3-9, https://doi.org/10.1021/je60072a014 . [all data]

Bondi, 1963
Bondi, A., Heat of Siblimation of Molecular Crystals: A Catalog of Molecular Structure Increments., J. Chem. Eng. Data, 1963, 8, 3, 371-381, https://doi.org/10.1021/je60018a027 . [all data]

Messerly, Guthrie, et al., 1967
Messerly, J.F.; Guthrie, G.B.; Todd, S.S.; Finke, H.L., Low-temperature thermal data for n-pentane, n-heptadecane, and n-octadecane, J. Chem. Eng. Data, 1967, 12, 338-346. [all data]

Acree, 1991
Acree, William E., Thermodynamic properties of organic compounds: enthalpy of fusion and melting point temperature compilation, Thermochimica Acta, 1991, 189, 1, 37-56, https://doi.org/10.1016/0040-6031(91)87098-H . [all data]

Parks and Huffman, 1930
Parks, G.S.; Huffman, H.M., Thermal data on organic compounds. IX. A study of the effect of unsaturation on the heat capacities, entropies and free energies of some hydrocarbons and other compounds, J. Am. Chem. Soc., 1930, 52, 4381-4391. [all data]


Notes

Go To: Top, Phase change data, References