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Cyclopentane, methyl-

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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
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tboil345.0 ± 0.2KAVGN/AAverage of 35 out of 41 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus131. ± 1.KAVGN/AAverage of 30 out of 35 values; Individual data points
Quantity Value Units Method Reference Comment
Ttriple130.5 ± 0.6KAVGN/AAverage of 6 values; Individual data points
Quantity Value Units Method Reference Comment
Tc532.7 ± 0.2KN/ADaubert, 1996 
Tc532.7KN/AMajer and Svoboda, 1985 
Tc532.73KN/AKudchadker, Alani, et al., 1968Uncertainty assigned by TRC = 0.3 K; TRC
Tc532.7KN/AAmbrose, Cox, et al., 1960Uncertainty assigned by TRC = 0.2 K; Vis, PRT, IPTS-48; TRC
Tc532.76KN/AKay, 1947Uncertainty assigned by TRC = 0.05 K; TRC
Quantity Value Units Method Reference Comment
Pc37.9 ± 0.4barN/ADaubert, 1996 
Pc37.84barN/AKudchadker, Alani, et al., 1968Uncertainty assigned by TRC = 0.4053 bar; TRC
Pc37.8591barN/AKay, 1947Uncertainty assigned by TRC = 0.0506 bar; TRC
Quantity Value Units Method Reference Comment
Vc0.318l/molN/ADaubert, 1996 
Quantity Value Units Method Reference Comment
rhoc3.14 ± 0.04mol/lN/ADaubert, 1996 
rhoc3.137mol/lN/AKudchadker, Alani, et al., 1968Uncertainty assigned by TRC = 0.05 mol/l; TRC
rhoc3.14mol/lN/AKay, 1947Uncertainty assigned by TRC = 0.02 mol/l; TRC
Quantity Value Units Method Reference Comment
Deltavap31.7 ± 0.1kJ/molAVGN/AAverage of 6 values; Individual data points

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
29.08345.N/AMajer and Svoboda, 1985 
31.4315.N/ASapei, Uusi-Kyyny, et al., 2010Based on data from 300. - 345. K.; AC
31.9303.A,MMStephenson and Malanowski, 1987Based on data from 288. - 346. K. See also Willingham, Taylor, et al., 1945.; AC
31.33 ± 0.02304.VMcCullough, Pennington, et al., 1959ALS
31.3 ± 0.1304.CMcCullough, Pennington, et al., 1959AC
30.2 ± 0.1326.CMcCullough, Pennington, et al., 1959AC
29.1 ± 0.1345.CMcCullough, Pennington, et al., 1959AC

Enthalpy of vaporization

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

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Temperature (K) A (kJ/mol) beta Tc (K) Reference Comment
298. - 345.45.980.271532.7Majer 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
288.18 - 345.783.987731186.059-47.108Williamham, Taylor, et al., 1945

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Reference Comment
6.9287130.73Douslin and Huffman, 1946DH
6.93130.7Domalski and Hearing, 1996AC
6.883130.1Huffman, Parks, et al., 1931DH

Entropy of fusion

DeltafusS (J/mol*K) Temperature (K) Reference Comment
53.00130.73Douslin and Huffman, 1946DH
52.9130.1Huffman, Parks, et al., 1931DH

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.

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]

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]

Kudchadker, Alani, et al., 1968
Kudchadker, A.P.; Alani, G.H.; Zwolinski, B.J., The Critical Constants of Organic Substances, Chem. Rev., 1968, 68, 659. [all data]

Ambrose, Cox, et al., 1960
Ambrose, D.; Cox, J.D.; Townsend, R., The critical temperatures of forty organic compounds, Trans. Faraday Soc., 1960, 56, 1452. [all data]

Kay, 1947
Kay, W.B., Vapor Pressures and Saturated Liquid and Vapor DEensities of Cyclopentane, Methylcyclopentane, Ethylcyclopentane, and Methylcyclohexane, J. Am. Chem. Soc., 1947, 69, 1273-7. [all data]

Sapei, Uusi-Kyyny, et al., 2010
Sapei, Erlin; Uusi-Kyyny, Petri; Keskinen, Kari I.; Alopaeus, Ville, Phase equilibria of binary systems of 3-methylthiophene with four different hydrocarbons, Fluid Phase Equilibria, 2010, 288, 1-2, 155-160, https://doi.org/10.1016/j.fluid.2009.11.004 . [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]

Willingham, Taylor, et al., 1945
Willingham, C.B.; Taylor, W.J.; Pignocco, J.M.; Rossini, F.D., Vapor pressures and boiling points of some paraffin, alkylcyclopentane, alkylcyclohexane, and alkylbenzene hydrocarbons, J. RES. NATL. BUR. STAN., 1945, 35, 3, 219-17, https://doi.org/10.6028/jres.035.009 . [all data]

McCullough, Pennington, et al., 1959
McCullough, J.P.; Pennington, R.E.; Smith, J.C.; Hossenlopp, I.A.; Waddington, G., Thermodynamics of cyclopentane, methylcyclopentane and 1,cis-3-dimethylcyclopentane: Verification of the concept of pseudorotation, J. Am. Chem. Soc., 1959, 81, 5880-5883. [all data]

Williamham, Taylor, et al., 1945
Williamham, C.B.; Taylor, W.J.; Pignocco, J.M.; Rossini, F.D., Vapor Pressures and Boiling Points of Some Paraffin, Alkylcyclopentane, Alkylcyclohexane, and Alkylbenzene Hydrocarbons, J. Res. Natl. Bur. Stand. (U.S.), 1945, 35, 3, 219-244, https://doi.org/10.6028/jres.035.009 . [all data]

Douslin and Huffman, 1946
Douslin, D.R.; Huffman, H.M., The heat capacities, heats of transition, heats of fusion and entropies of cyclopentane, methylcyclopentane and methylcylohexane, J. Am. Chem. Soc., 1946, 68, 173-176. [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]

Huffman, Parks, et al., 1931
Huffman, H.M.; Parks, G.S.; Barmore, M., Thermal data on organic compounds. X. Further studies on the heat capacities, entropies and free energies of hydrocarbons, J. Am. Chem. Soc., 1931, 53, 3876-3888. [all data]


Notes

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