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Isoprene

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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, Chris Muzny, 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
Tboil307. ± 2.KAVGN/AAverage of 17 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus131. ± 20.KAVGN/AAverage of 7 values; Individual data points
Quantity Value Units Method Reference Comment
Ttriple127.27KN/AMesserly, Todd, et al., 1970Uncertainty assigned by TRC = 0.05 K; TRC
Ttriple126.4KN/ABekkedahl and Wood, 1937Uncertainty assigned by TRC = 0.2 K; TRC
Quantity Value Units Method Reference Comment
Deltavap6.31kcal/molN/AReid, 1972AC
Deltavap6.40 ± 0.06kcal/molVRogers, 1971ALS

Enthalpy of vaporization

DeltavapH (kcal/mol) Temperature (K) Method Reference Comment
7.03239.AStephenson and Malanowski, 1987Based on data from 221. - 254. K.; AC
6.76269.AStephenson and Malanowski, 1987Based on data from 254. - 316. K.; AC
7.53225.IPOsborn and Douslin, 1969Based on data from 216. - 235. K.; AC
6.52299.MMForziati, Camin, et al., 1950Based on data from 290. - 308. K.; AC
6.55288.N/AKuchinskaya, 1938Based on data from 258. - 318. K.; AC
6.17307.2VBekkedahl, Wood, et al., 1936ALS

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 Comment
215.6 - 234.924.082511108.151-35.731Osborn and Douslin, 1969Coefficents calculated by NIST from author's data.
289.9 - 307.3.21015706.92-87.046Gubkov, Fermor, et al., 1964Coefficents calculated by NIST from author's data.

Enthalpy of fusion

DeltafusH (kcal/mol) Temperature (K) Reference Comment
1.1770127.27Messerly, Todd, et al., 1970, 2DH
1.154126.4Warfield and Petree, 1965DH
1.154126.4Bekkedahl and Wood, 1937, 2DH
1.18127.3Domalski and Hearing, 1996AC

Entropy of fusion

DeltafusS (cal/mol*K) Temperature (K) Reference Comment
9.2481127.27Messerly, Todd, et al., 1970, 2DH
9.132126.4Warfield and Petree, 1965DH
9.132126.4Bekkedahl and Wood, 1937, 2DH

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.

Messerly, Todd, et al., 1970
Messerly, J.F.; Todd, S.S.; Guthrie, G.B., Chemical thermodynamic properties of the pentadienes. Third law studies., J. Chem. Eng. Data, 1970, 15, 227-32. [all data]

Bekkedahl and Wood, 1937
Bekkedahl, N.; Wood, L.A., Entropy of isoprene from heat-capacity measurements., J. Res. Natl. Bur. Stand. (U. S.), 1937, 19, 551. [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]

Rogers, 1971
Rogers, F.E., Thermochemistry of the Diels-Alder reaction. I. Enthalpy of addition of isoprene to tetracyanoethylene, J. Phys. Chem., 1971, 75, 1734-1737. [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, 1969
Osborn, Ann G.; Douslin, Donald R., Vapor pressure relations for the seven pentadienes, J. Chem. Eng. Data, 1969, 14, 2, 208-209, https://doi.org/10.1021/je60041a010 . [all data]

Forziati, Camin, et al., 1950
Forziati, A.F.; Camin, D.L.; Rossini, F.D., Density, refractive index, boiling point, and vapor pressure of eight monoolefin (1-alkene), six pentadiene, and two cyclomonoolefin hydrocarbons, J. RES. NATL. BUR. STAN., 1950, 45, 5, 406, https://doi.org/10.6028/jres.045.044 . [all data]

Kuchinskaya, 1938
Kuchinskaya, K., Vapor pressures of pure substances, Sbornik Trudov Opytnogo Zavoda im. Akad. S. V. Lebedeva, 1938, 27-30. [all data]

Bekkedahl, Wood, et al., 1936
Bekkedahl, N.; Wood, L.A.; Wojciechowski, M., Some physical properties of isoprene, J. Res. NBS, 1936, 17, 883-894. [all data]

Gubkov, Fermor, et al., 1964
Gubkov, A.N.; Fermor, N.A.; Smirnov, N.I., Vapor Pressure of Mono-Poly Systems, Zh. Prikl. Khim. (Leningrad), 1964, 37, 2204-2210. [all data]

Messerly, Todd, et al., 1970, 2
Messerly, J.F.; Todd, S.S.; Guthrie, G.B., Chemical thermodynamic properties of the pentadienes, J. Chem. Eng. Data, 1970, 15, 227-232. [all data]

Warfield and Petree, 1965
Warfield, R.W.; Petree, M.C., Thermodynamic properties of natural rubber and isoprene, Die Makromol. Chemie, 1965, 84, 1-8. [all data]

Bekkedahl and Wood, 1937, 2
Bekkedahl, N.; Wood, L.A., Entropy of isoprene from heat-capacity measurements, J. Res. NBS, 1937, 19, 551-558. [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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