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Pentane, 3,3-diethyl-

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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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Kenneth Kroenlein director
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tboil419.3 ± 0.4KAVGN/AAverage of 12 out of 13 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus241. ± 2.KAVGN/AAverage of 13 out of 14 values; Individual data points
Quantity Value Units Method Reference Comment
Ttriple240.1KN/AFinke, Messerly, et al., 1976Crystal phase 1 phase; Uncertainty assigned by TRC = 0.03 K; TRC
Ttriple240.13KN/AStaveley, Warren, et al., 1954Crystal phase 1 phase; Uncertainty assigned by TRC = 0.2 K; TRC
Ttriple240.11KN/AWaddington, 1950Crystal phase 1 phase; Uncertainty assigned by TRC = 0.04 K; TRC
Quantity Value Units Method Reference Comment
Deltavap42.03kJ/molN/AMajer and Svoboda, 1985 
Deltavap42.6 ± 0.3kJ/molCFuchs and Peacock, 1979ALS
Deltavap42.6 ± 0.3kJ/molGCCFuchs and Peacock, 1979AC
Deltavap43.6kJ/molN/AReid, 1972See also Labbauf, Greenshields, et al., 1961.; AC

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
39.8350.AStephenson and Malanowski, 1987Based on data from 335. - 426. K. See also Forziati, Norris, et al., 1949.; AC
34.61419.4N/AMajer and Svoboda, 1985 

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
336.03 - 420.344.028031458.142-56.803Forziati, Norris, et al., 1949, 2Coefficents calculated by NIST from author's data.

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Reference Comment
10.09240.1Domalski and Hearing, 1996AC

Entropy of fusion

DeltafusS (J/mol*K) Temperature (K) Reference Comment
2.32208.3Domalski and Hearing, 1996CAL
3.85210.4
42.02240.1

Enthalpy of phase transition

DeltaHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
0.4837208.25crystaline, IIIcrystaline, IIFinke, Messerly, et al., 1976, 2DH
0.8104210.4crystaline, IIcrystaline, IFinke, Messerly, et al., 1976, 2DH
10.0897240.10crystaline, IliquidFinke, Messerly, et al., 1976, 2DH
1.272210.1crystaline, IIcrystaline, IStaveley, Warren, et al., 1954, 2Combined heats of transition for multiple phases.; DH
10.033240.13crystaline, IliquidStaveley, Warren, et al., 1954, 2Combined entropies of fusion and transition.; DH

Entropy of phase transition

DeltaStrs (J/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
2.32208.25crystaline, IIIcrystaline, IIFinke, Messerly, et al., 1976, 2DH
3.85210.4crystaline, IIcrystaline, IFinke, Messerly, et al., 1976, 2DH
42.02240.10crystaline, IliquidFinke, Messerly, et al., 1976, 2DH
47.82240.13crystaline, IliquidStaveley, Warren, et al., 1954, 2Combined; DH

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.

Finke, Messerly, et al., 1976
Finke, H.L.; Messerly, J.F.; Douslin, D.R., Low-Temp. Thermal Quantities for Five Alkyl-Substituted Pentanes, J. Chem. Thermodyn., 1976, 8, 965. [all data]

Staveley, Warren, et al., 1954
Staveley, L.A.K.; Warren, J.B.; Paget, H.P.; Dowrick, D.J., Some Thermodynamic Properties of Compounds of the Formula MX4 II. Tetraalkyl Compounds, J. Chem. Soc., 1954, 1954, 1992. [all data]

Waddington, 1950
Waddington, G., Personal Commun., U. S. Bur. Mines, Bartlesville, OK, March 2, 1950. [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]

Fuchs and Peacock, 1979
Fuchs, R.; Peacock, L.A., Heats of vaporization and gaseous heats of formation of some five- and six-membered ring alkenes, Can. J. Chem., 1979, 57, 2302-2304. [all data]

Reid, 1972
Reid, Robert C., Handbook on vapor pressure and heats of vaporization of hydrocarbons and related compounds, R. C. Wilhort and B. J. Zwolinski, Texas A Research Foundation. College Station, Texas(1971). 329 pages.$10.00, AIChE J., 1972, 18, 6, 1278-1278, https://doi.org/10.1002/aic.690180637 . [all data]

Labbauf, Greenshields, et al., 1961
Labbauf, A.; Greenshields, J.B.; Rossini, F.D., Heats of formation, combustion, and vaporization of the 35 nonanes and 75 decanes, J. Chem. Eng. Data, 1961, 6, 261-263. [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]

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]

Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D., Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III, J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985 . [all data]

Finke, Messerly, et al., 1976, 2
Finke, H.L.; Messerly, J.F.; Douslin, D.R., Low-temperature thermal quantities for five alkyl-substituted pentanes, J. Chem. Thermodynam., 1976, 8, 965-983. [all data]

Staveley, Warren, et al., 1954, 2
Staveley, L.A.K.; Warren, J.B.; Paget, H.P.; Dowrick, D.J., Some thermodynamic properties of compounds of the formula MX4. Part II. Tetra-alkyl compounds, 1954, J. [all data]


Notes

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