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Benzene, 1,2,4-trimethyl-

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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
DRB - Donald R. Burgess, Jr.
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tboil442.4 ± 0.8KAVGN/AAverage of 33 out of 34 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus227. ± 5.KAVGN/AAverage of 14 out of 15 values; Individual data points
Quantity Value Units Method Reference Comment
Ttriple229.330KN/APutnam and Kilpatrick, 1957Uncertainty assigned by TRC = 0.03 K; TRC
Ttriple228.6KN/AHuffman, Parks, et al., 1931Uncertainty assigned by TRC = 0.3 K; TRC
Quantity Value Units Method Reference Comment
Tc650. ± 30.KAVGN/AAverage of 8 values; Individual data points
Quantity Value Units Method Reference Comment
Pc30. ± 9.atmAVGN/AAverage of 7 values; Individual data points
Quantity Value Units Method Reference Comment
Deltavap11. ± 1.kcal/molAVGN/AAverage of 8 values; Individual data points

Enthalpy of vaporization

DeltavapH (kcal/mol) Temperature (K) Method Reference Comment
10.5372.AStephenson and Malanowski, 1987Based on data from 357. - 450. K. See also Forziati, Norris, et al., 1949.; AC
11.1262.RGHopke and Sears, 1948Based on data from 257. - 267. K.; 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
358.0 - 443.534.163021573.267-64.586Forziati, Norris, et al., 1949, 2

Enthalpy of fusion

DeltafusH (kcal/mol) Temperature (K) Reference Comment
3.152229.3Domalski and Hearing, 1996AC
3.0229228.6Huffman, Parks, et al., 1931, 2DH

Entropy of fusion

DeltafusS (cal/mol*K) Temperature (K) Reference Comment
13.2228.6Huffman, Parks, et al., 1931, 2DH

Enthalpy of phase transition

DeltaHtrs (kcal/mol) Temperature (K) Initial Phase Final Phase Reference Comment
3.1525229.33crystaline, IliquidPutnam and Kilpatrick, 1957, 2DH

Entropy of phase transition

DeltaStrs (cal/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
13.75229.33crystaline, IliquidPutnam and Kilpatrick, 1957, 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.

Putnam and Kilpatrick, 1957
Putnam, W.E.; Kilpatrick, J.E., Entropy, Heat Capacity, and Heats of Transition of 1,2,4-Trimethylbenzene, J. Chem. Phys., 1957, 27, 1075. [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, 3876-88. [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]

Hopke and Sears, 1948
Hopke, E.R.; Sears, G.W., Vapor Pressures of Trimethylbenzenes in the Low Pressure Region 1,2, J. Am. Chem. Soc., 1948, 70, 11, 3801-3803, https://doi.org/10.1021/ja01191a077 . [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]

Huffman, Parks, et al., 1931, 2
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]

Putnam and Kilpatrick, 1957, 2
Putnam, W.E.; Kilpatrick, J.E., Entropy, heat capacity and heats of transition of 1,2,4-trimethylbenzene, J. Chem. Phys., 1957, 27, 1075-1080. [all data]


Notes

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