1-Propene, 2-methyl-

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Condensed phase thermochemistry 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 by: Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
liquid46.4cal/mol*KN/ATodd and Parks, 1936Extrapolation below 90 K, 45.23 J/mol*K.

Constant pressure heat capacity of liquid

Cp,liquid (cal/mol*K) Temperature (K) Reference Comment
28.99266.26Rabinovich and Lebedev, 1971T = 90 to 266 K.
29.020253.1Todd and Parks, 1936T = 93.3 to 253 K. Value is unsmoothed experimental datum.

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:
DH - Eugene S. Domalski and Elizabeth D. Hearing
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

Quantity Value Units Method Reference Comment
Tboil266.7 ± 0.7KAVGN/AAverage of 25 out of 28 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus132.38KN/ARabinovich and Lebedev, 1971DH
Tfus132.45KN/AKistiakowsky, Ruhoff, et al., 1935Uncertainty assigned by TRC = 0.3 K; TRC
Tfus125.4KN/ACoffin and Maass, 1928Uncertainty assigned by TRC = 0.5 K; TRC
Quantity Value Units Method Reference Comment
Ttriple132.4KN/ATodd and Parks, 1936, 2Uncertainty assigned by TRC = 0.2 K; TRC
Quantity Value Units Method Reference Comment
Tc417.9 ± 0.1KN/ATsonopoulos and Ambrose, 1996 
Tc417.88KN/ABeattie, Ingersoll, et al., 1942Uncertainty assigned by TRC = 0.1 K; TRC
Tc420.15KN/ACoffin and Maass, 1928Uncertainty assigned by TRC = 2. K; TRC
Quantity Value Units Method Reference Comment
Pc39.48 ± 0.099atmN/ATsonopoulos and Ambrose, 1996 
Pc39.4800atmN/ABeattie, Ingersoll, et al., 1942Uncertainty assigned by TRC = 0.09998 atm; TRC
Quantity Value Units Method Reference Comment
Vc0.2388l/molN/ATsonopoulos and Ambrose, 1996 
Quantity Value Units Method Reference Comment
ρc4.19 ± 0.010mol/lN/ATsonopoulos and Ambrose, 1996 
ρc4.17mol/lN/ABeattie, Ingersoll, et al., 1942Uncertainty assigned by TRC = 0.05 mol/l; TRC
Quantity Value Units Method Reference Comment
Δvap4.92kcal/molN/AReid, 1972AC

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
5.52264.AStephenson and Malanowski, 1987Based on data from 212. to 279. K.; AC
5.43281.AStephenson and Malanowski, 1987Based on data from 266. to 313. K.; AC
5.31325.AStephenson and Malanowski, 1987Based on data from 310. to 376. K.; AC
5.33386.AStephenson and Malanowski, 1987Based on data from 371. to 418. K.; AC
5.31350.N/ABeattie, Ingersoll, et al., 1942, 2Based on data from 303. to 398. K.; AC
5.45258.N/ALamb and Roper, 1940Based on data from 216. to 273. K. See also Boublik, Fried, et al., 1984.; 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 Comment
216.40 to 273.3.64138799.055-46.615Lamb and Roper, 1940Coefficents calculated by NIST from author's data.

Enthalpy of fusion

ΔfusH (kcal/mol) Temperature (K) Reference Comment
1.41132.4Domalski and Hearing, 1996AC
1.415132.4Todd and Parks, 1936DH

Entropy of fusion

ΔfusS (cal/mol*K) Temperature (K) Reference Comment
10.69132.4Todd and Parks, 1936DH

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, Condensed phase thermochemistry data, Phase change data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Todd and Parks, 1936
Todd, S.S.; Parks, G.S., Thermal data on organic compounds. XV. Some heat capacity, entropy and free energy data for the isomeric butenes, J. Am. Chem. Soc., 1936, 58, 134-137. [all data]

Rabinovich and Lebedev, 1971
Rabinovich, I.B.; Lebedev, B.V., On the thermodynamic stability of polyisobutylene. Tr. Khim. Khim. Tekhnol., 1971, 194-196. [all data]

Kistiakowsky, Ruhoff, et al., 1935
Kistiakowsky, G.B.; Ruhoff, J.R.; Smith, H.A.; Vaughan, W.E., Heats of Organic Reactions II. Hydrogenation of Some Simpler Olefinic Hydrocarbons, J. Am. Chem. Soc., 1935, 57, 876-82. [all data]

Coffin and Maass, 1928
Coffin, C.C.; Maass, O., The Preparation and Physical Properties of α-,β- and γ-Butylene and Normal and Isobutane, J. Am. Chem. Soc., 1928, 50, 1427-37. [all data]

Todd and Parks, 1936, 2
Todd, S.S.; Parks, G.S., Thermal Data on Organic Compounds XV. Some Heat Capacity, Entropy and Free Energy Data for the Isomeric Butenes, J. Am. Chem. Soc., 1936, 58, 134. [all data]

Tsonopoulos and Ambrose, 1996
Tsonopoulos, C.; Ambrose, D., Vapor-Liquid Critical Properties of Elements and Compounds. 6. Unsaturated Aliphatic Hydrocarbons, J. Chem. Eng. Data, 1996, 41, 645-656. [all data]

Beattie, Ingersoll, et al., 1942
Beattie, J.A.; Ingersoll, H.G.; Stockmayer, W.H., Vapor Pressure and Critical Consants of Isobutene, J. Am. Chem. Soc., 1942, 64, 546. [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]

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]

Beattie, Ingersoll, et al., 1942, 2
Beattie, James A.; Ingersoll, Henry G.; Stockmayer, Walter H., Vapor Pressures and Critical Constants of Isobutene, J. Am. Chem. Soc., 1942, 64, 3, 546-548, https://doi.org/10.1021/ja01255a021 . [all data]

Lamb and Roper, 1940
Lamb, Arthur B.; Roper, Edwin E., The Vapor Pressures of Certain Unsaturated Hydrocarbons, J. Am. Chem. Soc., 1940, 62, 4, 806-814, https://doi.org/10.1021/ja01861a032 . [all data]

Boublik, Fried, et al., 1984
Boublik, T.; Fried, V.; Hala, E., The Vapour Pressures of Pure Substances: Selected Values of the Temperature Dependence of the Vapour Pressures of Some Pure Substances in the Normal and Low Pressure Region, 2nd ed., Elsevier, New York, 1984, 972. [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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