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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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
BS - Robert L. Brown and Stephen E. Stein
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 |
---|---|---|---|---|---|
Tboil | 411.4 ± 0.5 | K | AVG | N/A | Average of 59 out of 65 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 286.3 ± 0.2 | K | AVG | N/A | Average of 18 out of 21 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 286.400 | K | N/A | Messerly, Finke, et al., 1988 | Uncertainty assigned by TRC = 0.01 K; TRC |
Ttriple | 286.3 | K | N/A | Huffman, Parks, et al., 1930 | Uncertainty assigned by TRC = 0.3 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 617. ± 3. | K | AVG | N/A | Average of 12 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 35. ± 2. | bar | AVG | N/A | Average of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Vc | 0.378 | l/mol | N/A | Tsonopoulos and Ambrose, 1995 | |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 2.65 ± 0.02 | mol/l | N/A | Tsonopoulos and Ambrose, 1995 | |
ρc | 2.661 | mol/l | N/A | Akhundov and Imanov, 1970 | Uncertainty assigned by TRC = 0.05 mol/l; TRC |
ρc | 2.644 | mol/l | N/A | Simon, 1957 | Uncertainty assigned by TRC = 0.04 mol/l; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 42. ± 4. | kJ/mol | AVG | N/A | Average of 14 values; Individual data points |
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
35.67 | 411.5 | N/A | Majer and Svoboda, 1985 | |
40.3 | 353. | N/A | Hossenlopp and Archer, 1988 | AC |
37.3 | 426. | A | Stephenson and Malanowski, 1987 | Based on data from 411. to 463. K.; AC |
36.1 | 475. | A | Stephenson and Malanowski, 1987 | Based on data from 460. to 553. K.; AC |
36.2 | 566. | A | Stephenson and Malanowski, 1987 | Based on data from 551. to 616. K.; AC |
42.4 | 301. | IP,EB | Stephenson and Malanowski, 1987 | Based on data from 286. to 453. K. See also Osborn and Douslin, 1974.; AC |
36.0 ± 0.1 | 411. | C | Natarajan and Viswanath, 1985 | AC |
34.5 ± 0.1 | 436. | C | Natarajan and Viswanath, 1985 | AC |
30.5 ± 0.1 | 484. | C | Natarajan and Viswanath, 1985 | AC |
24.7 ± 0.1 | 540. | C | Natarajan and Viswanath, 1985 | AC |
37.3 | 395. | N/A | Castellari, Francesconi, et al., 1982 | Based on data from 380. to 410. K.; AC |
41.6 | 318. | N/A | Gaw and Swinton, 1968 | Based on data from 303. to 343. K.; AC |
40.1 | 347. | MM | Willingham, Taylor, et al., 1945 | Based on data from 332. to 413. K. See also Forziati, Norris, et al., 1949.; AC |
ΔvapH = A exp(-βTr) (1 − Tr) β
ΔvapH = Enthalpy of vaporization (at saturation pressure) (kJ/mol)
Tr = reduced temperature (T / Tc)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A (kJ/mol) | β | Tc (K) | Reference | Comment |
---|---|---|---|---|---|
298. to 440. | 58.21 | 0.2768 | 616.2 | Majer and Svoboda, 1985 |
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
286.43 to 452.38 | 4.14553 | 1474.403 | -55.377 | Osborn and Douslin, 1974 | Coefficents calculated by NIST from author's data. |
420.00 to 600.00 | 4.50944 | 1788.91 | -13.902 | Ambrose, Broderick, et al., 1967 | Coefficents calculated by NIST from author's data. |
331.44 to 412.44 | 4.11138 | 1450.688 | -58.16 | Williamham, Taylor, et al., 1945 | |
298. to 333. | 4.44889 | 1644.214 | -40.229 | Pitzer and Scott, 1943 | Coefficents calculated by NIST from author's data. |
ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
59.4 | 271. | N/A | Stephenson and Malanowski, 1987 | Based on data from 247. to 286. K. See also Osborn and Douslin, 1974.; AC |
60.8 | 286. | B | Hessler and Lichtenstein, 1986 | AC |
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
17.11746 | 286.405 | Messerly, Finke, et al., 1988, 2 | DH |
17.100 | 286.3 | Corruccini and Ginnings, 1947 | DH |
17.113 | 286.39 | Pitzer and Scott, 1943 | DH |
17.11 | 286.3 | Domalski and Hearing, 1996 | AC |
16.933 | 286.3 | Huffman, Parks, et al., 1930, 2 | DH |
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
59.77 | 286.405 | Messerly, Finke, et al., 1988, 2 | DH |
59.73 | 286.3 | Corruccini and Ginnings, 1947 | DH |
59.75 | 286.39 | Pitzer and Scott, 1943 | DH |
59.14 | 286.3 | Huffman, Parks, et al., 1930, 2 | DH |
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:
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Messerly, Finke, et al., 1988
Messerly, J.F.; Finke, H.L.; Good, W.D.; Gammon, B.E., Condensed-phase heat capacities and derived thermodynamic properties for 1,4-dimethylbenzene, 1,2-diphenylethane, and 2,3-dimethylnaphthalene, J. Chem. Thermodyn., 1988, 20, 485. [all data]
Huffman, Parks, et al., 1930
Huffman, H.M.; Parks, G.S.; Daniels, A.C., Thermal Data on Organic Compounds: VII The Heat Capacities, Entropies and Free Energies of Twelve Aromatic Hydrocarbons, J. Am. Chem. Soc., 1930, 52, 1547-58. [all data]
Tsonopoulos and Ambrose, 1995
Tsonopoulos, C.; Ambrose, D., Vapor-Liquid Critical Properties of Elements and Compounds. 3. Aromatic Hydrocarbons, J. Chem. Eng. Data, 1995, 40, 547-558. [all data]
Akhundov and Imanov, 1970
Akhundov, T.S.; Imanov, Sh.Yu., Teplofiz. Svoistva Zhidk., 1970, 1970, 48-55. [all data]
Simon, 1957
Simon, M., Methods and Apparatus Used at the Bureau of Physicochemical Standards XV. Critical Constants and Straight-Line Diameters of Ten Hydrocarbons, Bull. Soc. Chim. Belg., 1957, 66, 375-81. [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]
Hossenlopp and Archer, 1988
Hossenlopp, I.A.; Archer, D.G., Enthalpies of vaporization of piperidine and 1,2-dimethylbenzene; gas-phase isobaric heat capacities of piperidine, The Journal of Chemical Thermodynamics, 1988, 20, 9, 1061-1068, https://doi.org/10.1016/0021-9614(88)90112-7 . [all data]
Osborn and Douslin, 1974
Osborn, Ann G.; Douslin, Donald R., Vapor-pressure relations for 15 hydrocarbons, J. Chem. Eng. Data, 1974, 19, 2, 114-117, https://doi.org/10.1021/je60061a022 . [all data]
Natarajan and Viswanath, 1985
Natarajan, Govindarajan; Viswanath, Dabir S., Enthalpy of vaporization and vapor pressure of benzene, toluene, p-xylene, and tetralin between 1 and 16 bar, J. Chem. Eng. Data, 1985, 30, 2, 137-140, https://doi.org/10.1021/je00040a001 . [all data]
Castellari, Francesconi, et al., 1982
Castellari, Carlo; Francesconi, Romolo; Comelli, Fabio, Vapor-liquid equilibriums in binary systems containing 1,3-dioxolane at isobaric conditions. 3. Binary mixtures of 1,3-dioxolane with o-, m-, and p-xylenes, J. Chem. Eng. Data, 1982, 27, 2, 156-158, https://doi.org/10.1021/je00028a017 . [all data]
Gaw and Swinton, 1968
Gaw, W.J.; Swinton, F.L., Thermodynamic properties of binary systems containing hexafluorobenzene. Part 4.?Excess Gibbs free energies of the three systems hexafluorobenzene + benzene, touene, and p-xylene, Trans. Faraday Soc., 1968, 64, 2023, https://doi.org/10.1039/tf9686402023 . [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]
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]
Ambrose, Broderick, et al., 1967
Ambrose, D.; Broderick, B.E.; Townsend, R., The Vapour Pressures Above the Normal Boiling Point and the Critical Pressures of Some Aromatic Hydrocarbons, J. Chem. Soc. A:, 1967, 633-641, https://doi.org/10.1039/j19670000633 . [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]
Pitzer and Scott, 1943
Pitzer, K.S.; Scott, D.W., The thermodynamics and molecular structure of benzene and its methyl derivatives, J. Am. Chem. Soc., 1943, 65, 803-829. [all data]
Hessler and Lichtenstein, 1986
Hessler, W.; Lichtenstein, W., Wiss. Zeitschr. Wilhelm-Pieck-Univ. Rostock, Naturwiss. Reihe, 1986, 35, 7, 27. [all data]
Messerly, Finke, et al., 1988, 2
Messerly, J.F.; Finke, H.L.; Good, W.D.; Gammon, B.E., Condensed-phase heat capacities and derived thermodynamic properties for 1,4-dimethylbenzene, 1,2-diphenylethane, and 2,3-dimethylnaphthalene, J. Chem. Thermodynam., 1988, 20, 485-501. [all data]
Corruccini and Ginnings, 1947
Corruccini, R.J.; Ginnings, D.C., The enthalpy, entropy and specific heat of liquid p-xylene from 0 to 300°. The heat of fusion, J. Am. Chem. Soc., 1947, 69, 2291-2294. [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., 1930, 2
Huffman, H.M.; Parks, G.S.; Daniels, A.C., Thermal data on organic compounds. VII. The heat capacities, entropies and free energies of twelve aromatic hydrocarbons, J. Am. Chem. Soc., 1930, 52, 1547-1558. [all data]
Pc | Critical pressure |
Tboil | Boiling point |
Tc | Critical temperature |
Tfus | Fusion (melting) point |
Ttriple | Triple point temperature |
Vc | Critical volume |
ΔfusH | Enthalpy of fusion |
ΔfusS | Entropy of fusion |
ΔsubH | Enthalpy of sublimation |
ΔvapH | Enthalpy of vaporization |
ΔvapH° | Enthalpy of vaporization at standard conditions |
ρc | Critical density |
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