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1H-Pyrrole, 2,5-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:
BS - Robert L. Brown and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny, director
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tfus280.904KN/ASteele, Chirico, et al., 1986DH
Quantity Value Units Method Reference Comment
Ttriple280.830KN/AMesserly, Todd, et al., 1988Uncertainty assigned by TRC = 0.04 K; extr. to F = 1.; TRC
Ttriple280.900KN/AMesserly, Todd, et al., 1988Uncertainty assigned by TRC = 0.02 K; corrected to pure sample; TRC
Ttriple279.91KN/AAnonymous, 1961Uncertainty assigned by TRC = 0.05 K; TRC
Quantity Value Units Method Reference Comment
Deltavap13.51 ± 0.05kcal/molVGood, 1972ALS
Deltavap13.5kcal/molN/AGood, 1972DRB

Reduced pressure boiling point

Tboil (K) Pressure (atm) Reference Comment
438.20.974Aldrich Chemical Company Inc., 1990BS
324.70.01Weast and Grasselli, 1989BS

Enthalpy of vaporization

DeltavapH (kcal/mol) Temperature (K) Method Reference Comment
11.8388.A,IP,EBStephenson and Malanowski, 1987Based on data from 373. - 43. K. See also Osborn and Douslin, 1968.; AC

Antoine Equation Parameters

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

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Temperature (K) A B C Reference
373.71 - 472.394.331821516.019-90.68Osborn and Douslin, 1968

Enthalpy of fusion

DeltafusH (kcal/mol) Temperature (K) Reference Comment
2.22238280.904Messerly, Todd, et al., 1988, 2DH
2.2218280.904Messerly, Todd, et al., 1987DH
2.2280.9Domalski and Hearing, 1996AC

Entropy of fusion

DeltafusS (cal/mol*K) Temperature (K) Reference Comment
7.911280.904Messerly, Todd, et al., 1988, 2DH
7.909280.904Messerly, Todd, et al., 1987DH

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.

Steele, Chirico, et al., 1986
Steele, W.V.; Chirico, R.D.; Collier, W.B.; Hossenlopp, I.A.; Nguyen, A.; Strube, M.M., Thermochemical and thermophysical properties of organic nitrogen compounds found in fossil materials, NIPER Report, 1986, 188, 112p. [all data]

Messerly, Todd, et al., 1988
Messerly, J.F.; Todd, s.S.; Finke, H.L.; Good, W.D.; Gammon, B.E., Condensed-phase heat-capacity studies and derived thermodynamic properties for six cyclic nitrogen compounds, J. Chem. Thermodyn., 1988, 20, 209. [all data]

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

Good, 1972
Good, W.D., Enthalpies of combustion of nine organic nitrogen compounds related to petroleum, J. Chem. Eng. Data, 1972, 17, 28-31. [all data]

Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc., Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [all data]

Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 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, 1968
Osborn, Ann G.; Douslin, Donald R., Vapor pressure relations of 13 nitrogen compounds related to petroleum, J. Chem. Eng. Data, 1968, 13, 4, 534-537, https://doi.org/10.1021/je60039a024 . [all data]

Messerly, Todd, et al., 1988, 2
Messerly, J.F.; Todd, S.S.; Finke, H.L.; Good, W.D.; Gammon, B.E., Condensed-phase heat-capacity studies and derived thermodynamic properties for six cyclic nitrogen compounds, J. Chem. Thermodynam., 1988, 20, 209-224. [all data]

Messerly, Todd, et al., 1987
Messerly, J.F.; Todd, S.S.; Finke, H.L.; Gammon, B.E., Thermodynamic properties of organic nitrogen compounds that occur in shale oil and heavy petroleum-topical report, NIPER Report, 1987, 83, 37p. [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]


Notes

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