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Pentane, 2,3-dimethyl-

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Phase change data

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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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Kenneth Kroenlein director
BS - Robert L. Brown and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Tboil362.9 ± 0.3KAVGN/AAverage of 35 out of 39 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus149.36KN/AAnonymous, 1961Uncertainty assigned by TRC = 0.05 K; TRC
Tfus139.85KN/ABrooks, Cleaton, et al., 1937Uncertainty assigned by TRC = 1. K; TRC
Quantity Value Units Method Reference Comment
Tc537.3 ± 0.5KN/ADaubert, 1996 
Tc537.29KN/AMcMicking and Kay, 1965Uncertainty assigned by TRC = 0.4 K; TRC
Tc537.KN/AFrancis, 1957Uncertainty assigned by TRC = 1. K; TRC
Tc537.75KN/AEdgar and Calingaert, 1929Uncertainty assigned by TRC = 0.5 K; measured by Keys and Kleinschmidt; TRC
Quantity Value Units Method Reference Comment
Pc29.1 ± 0.5barN/ADaubert, 1996 
Pc29.080barN/AMcMicking and Kay, 1965Uncertainty assigned by TRC = 0.4053 bar; TRC
Pc29.5869barN/AEdgar and Calingaert, 1929Uncertainty assigned by TRC = 0.5066 bar; measured by Keys and Kleinschmidt; TRC
Quantity Value Units Method Reference Comment
Vc0.393l/molN/ADaubert, 1996 
Quantity Value Units Method Reference Comment
rhoc2.54 ± 0.05mol/lN/ADaubert, 1996 
rhoc2.54mol/lN/AMcMicking and Kay, 1965Uncertainty assigned by TRC = 0.05 mol/l; TRC
Quantity Value Units Method Reference Comment
Deltavap34.3 ± 0.1kJ/molCMajer, Svoboda, et al., 1979AC
Deltavap34.2 ± 0.1kJ/molCOsborne and Ginnings, 1947AC
Deltavap34.23kJ/molCOsborne and Ginnings, 1947, 2ALS

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
33.0324.N/AMontón, de la Torre, et al., 1999Based on data from 309. - 371. K.; AC
35.9271.AStephenson and Malanowski, 1987Based on data from 208. - 286. K.; AC
34.5301.AStephenson and Malanowski, 1987Based on data from 286. - 365. K. See also Kkykj and Repas, 1973.; AC
33.4 ± 0.1313.CMajer, Svoboda, et al., 1979AC
32.2 ± 0.1333.CMajer, Svoboda, et al., 1979AC
31.1 ± 0.1353.CMajer, Svoboda, et al., 1979AC
34.4306.N/AForziati, Norris, et al., 1949Based on data from 291. - 364. K.; AC

Antoine Equation Parameters

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

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Temperature (K) A B C Reference Comment
290.67 - 363.833.986821242.609-50.806Forziati, Norris, et al., 1949, 2Coefficents calculated by NIST from author's data.

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.

Anonymous, 1961
Anonymous, R., Preliminary thermodyn. prop. of FREON-14, E. I. Du Pont, Freon Tech. Bull. T-14, 1961. [all data]

Brooks, Cleaton, et al., 1937
Brooks, D.B.; Cleaton, R.B.; Carter, F.R., Paraffin Hydrocarbons Isolated from Crude Synthetic Isooctane (2,2,4-Trimethylpentane), J. Res. Natl. Bur. Stand. (U. S.), 1937, 19, 319. [all data]

Daubert, 1996
Daubert, T.E., Vapor-Liquid Critical Properties of Elements and Compounds. 5. Branched Alkanes and Cycloalkanes, J. Chem. Eng. Data, 1996, 41, 365-372. [all data]

McMicking and Kay, 1965
McMicking, J.H.; Kay, W.B., Vapor Pressures and Saturated Liquid and Vapor Densities of The Isomeric Heptanes and Isomeric Octanes, Proc., Am. Pet. Inst., Sect. 3, 1965, 45, 75-90. [all data]

Francis, 1957
Francis, A.W., Pressure-Temperature-Liquid Density Relations of Pure Hydrocarbons, Ind. Eng. Chem., 1957, 49, 1779. [all data]

Edgar and Calingaert, 1929
Edgar, G.; Calingaert, G., Preparation and Properties of the Isomeric Heptanes II. Physical Prop. properties, J. Am. Chem. Soc., 1929, 51, 1540. [all data]

Majer, Svoboda, et al., 1979
Majer, Vladimír; Svoboda, Václav; Hála, Slavoj; Pick, Jirí, Temperature dependence of heats of vaporization of saturated hydrocarbons C5-C8; Experimental data and an estimation method, Collect. Czech. Chem. Commun., 1979, 44, 3, 637-651, https://doi.org/10.1135/cccc19790637 . [all data]

Osborne and Ginnings, 1947
Osborne, Nathan S.; Ginnings, Defoe C., Measurements of heat of vaporization and heat capacity of a number of hydrocarbons, J. RES. NATL. BUR. STAN., 1947, 39, 5, 453-17, https://doi.org/10.6028/jres.039.031 . [all data]

Osborne and Ginnings, 1947, 2
Osborne, N.S.; Ginnings, D.C., Measurements of heat of vaporization and heat capacity of a number of hydrocarbons, J. Res. NBS, 1947, 39, 453-477. [all data]

Montón, de la Torre, et al., 1999
Montón, Juan B.; de la Torre, Javier; Burguet, M.C.; Muñoz, Rosa; Loras, Sonia, Isobaric Vapor-Liquid Equilibrium in the Systems 2,3-Dimethylpentane + Methyl 1,1-Dimethylethyl Ether, + Diisopropyl Ether and + Methyl 1,1-Dimethylpropyl Ether, J. Chem. Eng. Data, 1999, 44, 6, 1158-1162, https://doi.org/10.1021/je990110p . [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]

Kkykj and Repas, 1973
Kkykj, J.; Repas, M., Petrochemia, 1973, 13, 179. [all data]

Forziati, Norris, et al., 1949
Forziati, Alphonse F.; Norris, William R.; Rossini, Frederick D., Vapor pressures and boiling points of sixty API-NBS hydrocarbons, J. RES. NATL. BUR. STAN., 1949, 43, 6, 555-17, https://doi.org/10.6028/jres.043.050 . [all data]

Forziati, Norris, et al., 1949, 2
Forziati, A.F.; Norris, W.R.; Rossini, F.D., Vapor Pressures and Boiling Points of Sixty API-NBS Hydrocarbons, J. Res. Natl. Bur. Stand. (U.S.), 1949, 43, 6, 555-563, https://doi.org/10.6028/jres.043.050 . [all data]


Notes

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