Benzene

• Formula: C₆H₆
• Molecular weight: 78.1118
• IUPAC Standard InChI: InChI=1S/C6H6/c1-2-4-6-5-3-1/h1-6H Copy

  
• IUPAC Standard InChIKey: UHOVQNZJYSORNB-UHFFFAOYSA-N Copy
• 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:
  • Benzene-D6
• 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
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Phase change data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Reaction thermochemistry data: reactions 1 to 50, reactions 51 to 99
  • Henry's Law data
  • Gas phase ion energetics data
  • Ion clustering data
  • UV/Visible spectrum
  • Vibrational and/or electronic energy levels
  • Gas Chromatography
  • Fluid Properties
• Data at other public NIST sites:
  • Electron-Impact Ionization Cross Sections (on physics web site)
  • Gas Phase Kinetics Database
  • X-ray Photoelectron Spectroscopy Database, version 5.0
  • NIST Polycyclic Aromatic Hydrocarbon Structure Index
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Phase change data

Go To: Top, IR Spectrum, Mass spectrum (electron ionization), 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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
BS - Robert L. Brown and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing

Enthalpy of vaporization

Enthalpy of vaporization

Δ_vapH = A exp(-αT_r) (1 − T_r)^β
    Δ_vapH = Enthalpy of vaporization (at saturation pressure) (kcal/mol)
    T_r = reduced temperature (T / T_c)

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Antoine Equation Parameters

log₁₀(P) = A − (B / (T + C))
    P = vapor pressure (atm)
    T = temperature (K)

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Enthalpy of sublimation

Enthalpy of fusion

Entropy of fusion

IR Spectrum

Go To: Top, Phase change data, Mass spectrum (electron ionization), References, Notes

Data compiled by: Coblentz Society, Inc.

• GAS (70 mmHg, N2 ADDED, TOTAL PRESSURE 600 mmHg); DOW KBr FOREPRISM-GRATING; DIGITIZED BY COBLENTZ SOCIETY (BATCH II) FROM HARD COPY; 2 cm^-1 resolution
• SOLUTION (10% IN CCl4 FOR 3800-1300, 10% IN CS2 FOR 1300-625, AND 10% IN CCl4 FOR 625-240 CM^-1) VS. SOLVENT; PERKIN-ELMER 521 (GRATING); DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 4 cm^-1 resolution

Data compiled by: Tanya L. Myers, Russell G. Tonkyn, Ashley M. Oeck, Tyler O. Danby, John S. Loring, Matthew S. Taubman, Stephen W. Sharpe, Jerome C. Birnbaum, and Timothy J. Johnson

• liquid; Bruker Tensor 27 FTIR; 0.48212986 cm^-1 resolution

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

• gas

Data compiled by: Pamela M. Chu, Franklin R. Guenther, George C. Rhoderick, and Walter J. Lafferty

• gas; IFS66V (Bruker); 3-Term B-H Apodization
  0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm^-1 resolution
• gas; IFS66V (Bruker); Boxcar Apodization
  0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm^-1 resolution
• gas; IFS66V (Bruker); Happ Genzel Apodization
  0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm^-1 resolution
• gas; IFS66V (Bruker); NB Strong Apodization
  0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm^-1 resolution
• gas; IFS66V (Bruker); Triangular Apodization
  0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm^-1 resolution

Mass spectrum (electron ionization)

Go To: Top, Phase change data, IR Spectrum, References, Notes

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

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Additional Data

References

Go To: Top, Phase change data, IR Spectrum, Mass spectrum (electron ionization), Notes

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

Kruif, 1980
Kruif, C.G., Enthalpies of sublimation and vapour pressures of 11 polycyclic hydrocarbons, J. Chem. Thermodyn., 1980, 12, 243-248. [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]

Lubomska, Banas, et al., 2002
Lubomska, Monika; Banas, Agnieszka; Malanowski, Stanislaw K., Vapor-Liquid Equilibrium in Binary Systems Formed by Allyl Alcohol with Benzene and with Cyclohexane, J. Chem. Eng. Data, 2002, 47, 6, 1466-1471, https://doi.org/10.1021/je025540l . [all data]

Liu and Dickhut, 1994
Liu, Kewen; Dickhut, Rebecca M., Saturation vapor pressures and thermodynamic properties of benzene and selected chlorinated benzenes at environmental temperatures, Chemosphere, 1994, 29, 3, 581-589, https://doi.org/10.1016/0045-6535(94)90445-6 . [all data]

Ambrose, Ewing, et al., 1990
Ambrose, D.; Ewing, M.B.; Ghiassee, N.B.; Sanchez Ochoa, J.C., The ebulliometric method of vapour-pressure measurement: vapour pressures of benzene, hexafluorobenzene, and naphthalene, The Journal of Chemical Thermodynamics, 1990, 22, 6, 589-605, https://doi.org/10.1016/0021-9614(90)90151-F . [all data]

Dong, Lin, et al., 1988
Dong, Jin-Quan; Lin, Rui-Sen; Yen, Wen-Hsing, Heats of vaporization and gaseous molar heat capacities of ethanol and the binary mixture of ethanol and benzene, Can. J. Chem., 1988, 66, 4, 783-790, https://doi.org/10.1139/v88-136 . [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]

Natarajan, 1983
Natarajan, G., High-temperature calorimeter for the measurement of vapor pressure and enthalpy of vaporization, Rev. Sci. Instrum., 1983, 54, 9, 1175, https://doi.org/10.1063/1.1137545 . [all data]

Tsonopoulos and Wilson, 1983
Tsonopoulos, Constantine; Wilson, G.M., High-temperature mutual solubilities of hydrocarbons and water. Part I: Benzene, cyclohexane andn-hexane, AIChE J., 1983, 29, 6, 990-999, https://doi.org/10.1002/aic.690290618 . [all data]

Rao and Viswanath, 1977
Rao, Yaddanapudi J.; Viswanath, Dabir S., Integral isobaric heats of vaporization of benzene-chloroethane systems, J. Chem. Eng. Data, 1977, 22, 1, 36-38, https://doi.org/10.1021/je60072a011 . [all data]

Svoboda, Veselý, et al., 1973
Svoboda, V.; Veselý, F.; Holub, R.; Pick, J., Enthalpy data of liquids. II. The dependence of heats of vaporization of methanol, propanol, butanol, cyclohexane, cyclohexene, and benzene on temperature, Collect. Czech. Chem. Commun., 1973, 38, 12, 3539-3543, https://doi.org/10.1135/cccc19733539 . [all data]

Mita, Imai, et al., 1971
Mita, Itaru; Imai, Isao; Kambe, Hirotaro, Determination of heat of mixing and heat of vaporization with a differential scanning calorimeter, Thermochimica Acta, 1971, 2, 4, 337-344, https://doi.org/10.1016/0040-6031(71)85035-9 . [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]

Yarym-Agaev, Fedos'ev, et al., 1949
Yarym-Agaev, N.L.; Fedos'ev, N.N.; Skorikov, K.G., Zh. Fiz. Khim., 1949, 11, 1257. [all data]

Thomson, 1946
Thomson, George Wm., The Antoine Equation for Vapor-pressure Data., Chem. Rev., 1946, 38, 1, 1-39, https://doi.org/10.1021/cr60119a001 . [all data]

Scott and Brickwedde, 1945
Scott, R.B.; Brickwedde, F.G., Thermodynamic properties of solid and liquid ethylbenzene from 0 to 300 degrees K, J. RES. NATL. BUR. STAN., 1945, 35, 6, 501-17, https://doi.org/10.6028/jres.035.024 . [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]

Smith, 1941
Smith, E.R., Boiling points of benzene, 2,2,3-trimethylbutane, 3-ethylpentane, and 2,2,4,4-tetramethylpentane within the range 100 to 1,500 millimeters of mercury, J. RES. NATL. BUR. STAN., 1941, 26, 2, 129-17, https://doi.org/10.6028/jres.026.004 . [all data]

Stuckey and Saylor, 1940
Stuckey, James M.; Saylor, John H., The Vapor Pressures of Some Organic Compounds. I. ¹, J. Am. Chem. Soc., 1940, 62, 11, 2922-2925, https://doi.org/10.1021/ja01868a011 . [all data]

Eon, Pommier, et al., 1971
Eon, C.; Pommier, C.; Guiochon, G., Vapor pressures and second virial coefficients of some five-membered heterocyclic derivatives, J. Chem. Eng. Data, 1971, 16, 4, 408-410, https://doi.org/10.1021/je60051a008 . [all data]

Deshpande and Pandya, 1967
Deshpande, D.D.; Pandya, M.V., Thermodynamics of Binary Solutions. Part 2. Vapour Pressures and Excess Free Energies of Aniline Solutions, Trans. Faraday Soc., 1967, 63, 2149-2157, https://doi.org/10.1039/tf9676302149 . [all data]

Kalafati, Rasskazov, et al., 1967
Kalafati, D.D.; Rasskazov, D.S.; Petrov, E.K., Experimental Determination of a Dependence of a Saturated Vapor Pressure of Benzene on Temperature, Zh. Fiz. Khim., 1967, 41, 1357-1359. [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]

Ha, Morrison, et al., 1976
Ha, H.; Morrison, J.A.; Richards, E.L., Vapour pressures of solid benzene, cyclohexane and their mixtures, J. Chem. Soc., Faraday Trans. 1, 1976, 72, 0, 1051, https://doi.org/10.1039/f19767201051 . [all data]

Hessler, 1984
Hessler, W., Wiss. Zeitschr. Wilhelm-Pieck-Univ. Rostock, Naturwiss. Reihe, 1984, 33, 9. [all data]

De Kruif and Van Ginkel, 1977
De Kruif, C.G.; Van Ginkel, C.H.D., Torsion-weighing effusion vapour-pressure measurements on organic compounds, The Journal of Chemical Thermodynamics, 1977, 9, 8, 725-730, https://doi.org/10.1016/0021-9614(77)90015-5 . [all data]

Jackowski, 1974
Jackowski, A.W., Vapour pressures of solid benzene and of solid cyclohexane, The Journal of Chemical Thermodynamics, 1974, 6, 1, 49-52, https://doi.org/10.1016/0021-9614(74)90205-5 . [all data]

Jones, 1960
Jones, A.H., Sublimation Pressure Data for Organic Compounds., J. Chem. Eng. Data, 1960, 5, 2, 196-200, https://doi.org/10.1021/je60006a019 . [all data]

Milazzo, 1956
Milazzo, G., Ann. Chim. (Rome), 1956, 46, 1105. [all data]

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

Wolf and Weghofer, 1938
Wolf, K.L.; Weghofer, H., Uber sublimationswarmen, Z. Phys. Chem., 1938, 39, 194-208. [all data]

de Boer, 1936
de Boer, J.H., The influence of van der Waals' forces and primary bonds on binding energy, strength and orientation, with special reference to some artificial resins, Trans. Faraday Soc., 1936, 32, 10, https://doi.org/10.1039/tf9363200010 . [all data]

Mündel, 1913
Mündel, C.F., Z. Phys. Chem., Stoechiom. Verwandtschaftsl., 1913, 85, 435. [all data]

Oliver, Eaton, et al., 1948
Oliver, G.D.; Eaton, M.; Huffman, H.M., The heat capacity, heat of fusion and entropy of benzene, J. Am. Chem. Soc., 1948, 70, 1502-1505. [all data]

Ziegler and Andrews, 1942
Ziegler, W.T.; Andrews, D.H., The heat capacity of benzene-d6, J. Am. Chem. Soc., 1942, 64, 2482-2485. [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]

Andrews, Lynn, et al., 1926
Andrews, D.H.; Lynn, G.; Johnston, J., The heat capacities and heat of crystallization of some isomeric aromatic compounds, J. Am. Chem. Soc., 1926, 48, 1274-1287. [all data]

Smith, 1979
Smith, G.W., Phase behavior of some linear polyphenyls, Mol. Cryst. Liq. Cryst., 1979, 49, 207-209. [all data]

Pacor, 1967
Pacor, P., Applicability of the DuPont 900 DTA apparatus in quantitative differential thermal analysis, Anal. Chim. Acta, 1967, 37, 200-208. [all data]

Tschamler, 1948
Tschamler, H., Uber binare flussige Mischungen I. Mischungswarment, Volumseffekte und Zustandsdiagramme von chlorex mit benzol und n-alkylbenzolen, Monatsh. Chem., 1948, 79, 162-177. [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, 1547-1558. [all data]

Maass and Walbauer, 1925
Maass, O.; Walbauer, L.J., The specific heats and latent heats of fusion of ice and of several organic compounds, J. Am. Chem. Soc., 1925, 47, 1-9. [all data]

Notes

Go To: Top, Phase change data, IR Spectrum, Mass spectrum (electron ionization), References

• Symbols used in this document:
  

  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
  ΔsubH°	Enthalpy of sublimation at standard conditions
  ΔvapH	Enthalpy of vaporization
  ΔvapH°	Enthalpy of vaporization at standard conditions
  ρc	Critical density

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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