Benzene
- Formula: C6H6
- Molecular weight: 78.1118
- IUPAC Standard InChIKey: UHOVQNZJYSORNB-UHFFFAOYSA-N
- CAS Registry Number: 71-43-2
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Isotopologues:
- Other names: [6]Annulene; Benzol; Benzole; Coal naphtha; Cyclohexatriene; Phenyl hydride; Pyrobenzol; Pyrobenzole; Benzolene; Bicarburet of hydrogen; Carbon oil; Mineral naphtha; Motor benzol; Benzeen; Benzen; Benzin; Benzine; Benzolo; Fenzen; NCI-C55276; Phene; Rcra waste number U019; UN 1114; NSC 67315; 1,3,5-Cyclohexatriene
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- Information on this page:
- Other data available:
- Condensed phase thermochemistry data
- Phase change data
- Reaction thermochemistry data: reactions 1 to 50, reactions 51 to 99
- Henry's Law data
- Gas phase ion energetics data
- Ion clustering data
- IR Spectrum
- Mass spectrum (electron ionization)
- UV/Visible spectrum
- Vibrational and/or electronic energy levels
- Gas Chromatography
- Fluid Properties
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Gas phase thermochemistry data
Go To: Top, References, Notes
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:
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 82.9 ± 0.9 | kJ/mol | Review | Roux, Temprado, et al., 2008 | There are sufficient high-quality literature values to make a good evaluation with a high degree of confidence. In general, the evaluated uncertainty limits are on the order of (0.5 to 2.5) kJ/mol.; DRB |
ΔfH°gas | 82.8 | kJ/mol | N/A | Good and Smith, 1969 | Value computed using ΔfHliquid° value of 49.0±0.5 kj/mol from Good and Smith, 1969 and ΔvapH° value of 33.9 kj/mol from Prosen, Gilmont, et al., 1945.; DRB |
ΔfH°gas | 82.93 ± 0.50 | kJ/mol | Ccb | Prosen, Gilmont, et al., 1945 | Hf by Prosen, Johnson, et al., 1946; ALS |
ΔfH°gas | 79.9 | kJ/mol | N/A | Landrieu, Baylocq, et al., 1929 | Value computed using ΔfHliquid° value of 46.0 kj/mol from Landrieu, Baylocq, et al., 1929 and ΔvapH° value of 33.9 kj/mol from Prosen, Gilmont, et al., 1945.; DRB |
Constant pressure heat capacity of gas
Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
33.27 | 50. | Thermodynamics Research Center, 1997 | GT |
35.11 | 100. | ||
41.94 | 150. | ||
53.17 | 200. | ||
74.55 | 273.15 | ||
82.44 | 298.15 | ||
83.02 | 300. | ||
113.52 | 400. | ||
139.35 | 500. | ||
160.09 | 600. | ||
176.78 | 700. | ||
190.45 | 800. | ||
201.82 | 900. | ||
211.41 | 1000. | ||
219.56 | 1100. | ||
226.52 | 1200. | ||
232.49 | 1300. | ||
237.65 | 1400. | ||
242.11 | 1500. | ||
250.91 | 1750. | ||
257.26 | 2000. | ||
261.95 | 2250. | ||
265.50 | 2500. | ||
268.23 | 2750. | ||
270.37 | 3000. |
Constant pressure heat capacity of gas
Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
93.32 ± 0.06 | 333.15 | Todd S.S., 1978 | Please also see Montgomery J.B., 1942, Pitzer K.S., 1943, Scott D.W., 1947.; GT |
95.81 | 341.60 | ||
97.99 ± 0.06 | 348.15 | ||
103.98 ± 0.06 | 368.15 | ||
105.02 | 370. | ||
104.77 | 371.20 | ||
108.8 ± 1.3 | 388. | ||
110.88 | 390. | ||
110.5 ± 1.3 | 393. | ||
113.93 | 402.30 | ||
114.29 ± 0.07 | 403.15 | ||
115.48 | 410. | ||
117.6 ± 1.3 | 417. | ||
118.8 ± 1.3 | 428. | ||
123.39 | 436.15 | ||
123.93 ± 0.07 | 438.15 | ||
126.8 ± 1.3 | 463. | ||
132.42 | 471.10 | ||
132.94 ± 0.08 | 473.15 | ||
131.4 ± 1.3 | 481. | ||
139.47 ± 0.08 | 500.15 | ||
145.59 ± 0.09 | 527.15 |
References
Go To: Top, Gas phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Roux, Temprado, et al., 2008
Roux, M.V.; Temprado, M.; Chickos, J.S.; Nagano, Y.,
Critically Evaluated Thermochemical Properties of Polycyclic Aromatic Hydrocarbons,
J. Phys. Chem. Ref. Data, 2008, 37, 4, 1855-1996. [all data]
Good and Smith, 1969
Good, W.D.; Smith, N.K.,
Enthalpies of combustion of toluene, benzene, cyclohexane, cyclohexene, methylcyclopentane, 1-methylcyclopentene, and n-hexane,
J. Chem. Eng. Data, 1969, 14, 102-106. [all data]
Prosen, Gilmont, et al., 1945
Prosen, E.J.; Gilmont, R.; Rossini, F.D.,
Heats of combustion of benzene, toluene, ethyl-benzene, o-xylene, m-xylene, p-xylene, n-propylbenzene, and styrene,
J. Res. NBS, 1945, 34, 65-70. [all data]
Prosen, Johnson, et al., 1946
Prosen, E.J.; Johnson, W.H.; Rossini, F.D.,
Heats of combustion and formation at 25°C of the alkylbenzenes through C10H14, and of the higher normal monoalkylbenzenes,
J. Res. NBS, 1946, 36, 455-461. [all data]
Landrieu, Baylocq, et al., 1929
Landrieu, P.; Baylocq, F.; Johnson, J.R.,
Etude thermochimique dans la serie furanique,
Bull. Soc. Chim. France, 1929, 45, 36-49. [all data]
Thermodynamics Research Center, 1997
Thermodynamics Research Center,
Selected Values of Properties of Chemical Compounds., Thermodynamics Research Center, Texas A&M University, College Station, Texas, 1997. [all data]
Todd S.S., 1978
Todd S.S.,
Vapor-flow calorimetry of benzene,
J. Chem. Thermodyn., 1978, 10, 641-648. [all data]
Montgomery J.B., 1942
Montgomery J.B.,
The heat capacity of organic vapors. IV. Benzene, fluorobenzene, toluene, cyclohexane, methylcyclohexane and cyclohexene,
J. Am. Chem. Soc., 1942, 64, 2375-2377. [all data]
Pitzer K.S., 1943
Pitzer K.S.,
The thermodynamics and molecular structure of benzene and its methyl derivatives,
J. Am. Chem. Soc., 1943, 65, 803-829. [all data]
Scott D.W., 1947
Scott D.W.,
The heat capacity of benzene vapor. The contribution of anharmonicity,
J. Chem. Phys., 1947, 15, 565-568. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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