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:
  • Condensed phase thermochemistry data
  • Reaction thermochemistry data (reactions 1 to 50)
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data: reactions 51 to 99
  • Henry's Law data
  • Ion clustering data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • 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
• Options:
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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 as indicated in comments:
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Constant pressure heat capacity of liquid

Constant pressure heat capacity of solid

Reaction thermochemistry data

Go To: Top, Condensed phase thermochemistry data, Gas phase ion energetics data, 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:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
RCD - Robert C. Dunbar

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Reactions 1 to 50

 +  = ( • )

By formula: Cl^- + C₆H₆ = (Cl^- • C₆H₆)

Free energy of reaction

C₆H₅^- +  =

By formula: C₆H₅^- + H⁺ = C₆H₆

C₆H₆⁺ +  = (C₆H₆⁺ • )

By formula: C₆H₆⁺ + C₆H₆ = (C₆H₆⁺ • C₆H₆)

Bond type: Charge transfer bond (positive ion)

 +  = ( • )

By formula: Li⁺ + C₆H₆ = (Li⁺ • C₆H₆)

 +  = ( • )

By formula: Br^- + C₆H₆ = (Br^- • C₆H₆)

Free energy of reaction

( • ) +  = ( • 2)

By formula: (Na⁺ • C₆H₆) + C₆H₆ = (Na⁺ • 2C₆H₆)

 +  = ( • )

By formula: Na⁺ + C₆H₆ = (Na⁺ • C₆H₆)

Free energy of reaction

C₉H₁₃N⁺ +  = (C₉H₁₃N⁺ • )

By formula: C₉H₁₃N⁺ + C₆H₆ = (C₉H₁₃N⁺ • C₆H₆)

Bond type: Charge transfer bond (positive ion)

Free energy of reaction

C₇H₉N⁺ +  = (C₇H₉N⁺ • )

By formula: C₇H₉N⁺ + C₆H₆ = (C₇H₉N⁺ • C₆H₆)

Bond type: Charge transfer bond (positive ion)

C₈H₁₁N⁺ +  = (C₈H₁₁N⁺ • )

By formula: C₈H₁₁N⁺ + C₆H₆ = (C₈H₁₁N⁺ • C₆H₆)

Bond type: Charge transfer bond (positive ion)

C₁₀H₁₀Fe⁺ +  = (C₁₀H₁₀Fe⁺ • )

By formula: C₁₀H₁₀Fe⁺ + C₆H₆ = (C₁₀H₁₀Fe⁺ • C₆H₆)

Free energy of reaction

( • ) +  = ( • 2)

By formula: (Co⁺ • C₆H₆) + C₆H₆ = (Co⁺ • 2C₆H₆)

Enthalpy of reaction

C₇H₈⁺ +  = (C₇H₈⁺ • )

By formula: C₇H₈⁺ + C₆H₆ = (C₇H₈⁺ • C₆H₆)

Bond type: Charge transfer bond (positive ion)

C₂H₇O⁺ +  = (C₂H₇O⁺ • )

By formula: C₂H₇O⁺ + C₆H₆ = (C₂H₇O⁺ • C₆H₆)

Free energy of reaction

( •  • ) +  = ( • 2 • )

By formula: (K⁺ • C₆H₆ • H₂O) + C₆H₆ = (K⁺ • 2C₆H₆ • H₂O)

( • 2 • ) +  = ( • 3 • )

By formula: (K⁺ • 2H₂O • C₆H₆) + H₂O = (K⁺ • 3H₂O • C₆H₆)

( •  • ) +  = ( • 2 • )

By formula: (K⁺ • H₂O • C₆H₆) + H₂O = (K⁺ • 2H₂O • C₆H₆)

 +  = ( • )

By formula: I^- + C₆H₆ = (I^- • C₆H₆)

C₃H₃⁺ +  = (C₃H₃⁺ • )

By formula: C₃H₃⁺ + C₆H₆ = (C₃H₃⁺ • C₆H₆)

( •  • 2) +  = ( • 2 • 2)

By formula: (K⁺ • H₂O • 2C₆H₆) + H₂O = (K⁺ • 2H₂O • 2C₆H₆)

(C₆H₆⁺ • 2) +  = (C₆H₆⁺ • 3)

By formula: (C₆H₆⁺ • 2C₆H₆) + C₆H₆ = (C₆H₆⁺ • 3C₆H₆)

Bond type: Charge transfer bond (positive ion)

( •  • 2) +  = ( • 2 • 2)

By formula: (K⁺ • C₆H₆ • 2H₂O) + C₆H₆ = (K⁺ • 2C₆H₆ • 2H₂O)

 +  = ( • )

By formula: Cr⁺ + C₆H₆ = (Cr⁺ • C₆H₆)

Enthalpy of reaction

( • 2) +  = ( •  • 2)

By formula: (K⁺ • 2C₆H₆) + H₂O = (K⁺ • H₂O • 2C₆H₆)

( • ) +  = ( •  • )

By formula: (K⁺ • C₆H₆) + H₂O = (K⁺ • H₂O • C₆H₆)

( • 2) +  = ( •  • 2)

By formula: (K⁺ • 2H₂O) + C₆H₆ = (K⁺ • C₆H₆ • 2H₂O)

( • 3) +  = ( •  • 3)

By formula: (K⁺ • 3H₂O) + C₆H₆ = (K⁺ • C₆H₆ • 3H₂O)

( • ) +  = ( •  • )

By formula: (K⁺ • H₂O) + C₆H₆ = (K⁺ • C₆H₆ • H₂O)

( • ) +  = ( • 2)

By formula: (Cr⁺ • C₆H₆) + C₆H₆ = (Cr⁺ • 2C₆H₆)

Enthalpy of reaction

 +  = ( • )

By formula: F^- + C₆H₆ = (F^- • C₆H₆)

 +  = ( • )

By formula: Mn⁺ + C₆H₆ = (Mn⁺ • C₆H₆)

Enthalpy of reaction

 +  = ( • )

By formula: V⁺ + C₆H₆ = (V⁺ • C₆H₆)

Enthalpy of reaction

 +  = ( • )

By formula: Fe⁺ + C₆H₆ = (Fe⁺ • C₆H₆)

Enthalpy of reaction

 +  = ( • )

By formula: Ti⁺ + C₆H₆ = (Ti⁺ • C₆H₆)

Enthalpy of reaction

( • ) +  = ( • 2)

By formula: (K⁺ • C₆H₆) + C₆H₆ = (K⁺ • 2C₆H₆)

C₄H₉⁺ +  = (C₄H₉⁺ • )

By formula: C₄H₉⁺ + C₆H₆ = (C₄H₉⁺ • C₆H₆)

(C₆H₆⁺ • ) +  = (C₆H₆⁺ • 2)

By formula: (C₆H₆⁺ • C₆H₆) + C₆H₆ = (C₆H₆⁺ • 2C₆H₆)

Bond type: Charge transfer bond (positive ion)

 +  = ( • )

By formula: K⁺ + C₆H₆ = (K⁺ • C₆H₆)

C₆H₇N⁺ +  = (C₆H₇N⁺ • )

By formula: C₆H₇N⁺ + C₆H₆ = (C₆H₇N⁺ • C₆H₆)

Bond type: Charge transfer bond (positive ion)

C₁₁H₁₀⁺ +  = (C₁₁H₁₀⁺ • )

By formula: C₁₁H₁₀⁺ + C₆H₆ = (C₁₁H₁₀⁺ • C₆H₆)

Bond type: Charge transfer bond (positive ion)

C₆H₅Cl⁺ +  = (C₆H₅Cl⁺ • )

By formula: C₆H₅Cl⁺ + C₆H₆ = (C₆H₅Cl⁺ • C₆H₆)

Bond type: Charge transfer bond (positive ion)

C₉H₁₂⁺ +  = (C₉H₁₂⁺ • )

By formula: C₉H₁₂⁺ + C₆H₆ = (C₉H₁₂⁺ • C₆H₆)

Bond type: Charge transfer bond (positive ion)

 +  = ( • )

By formula: NO^- + C₆H₆ = (NO^- • C₆H₆)

( • ) +  = ( • 2)

By formula: (Fe⁺ • C₆H₆) + C₆H₆ = (Fe⁺ • 2C₆H₆)

Enthalpy of reaction

( • ) +  = ( • 2)

By formula: (Ti⁺ • C₆H₆) + C₆H₆ = (Ti⁺ • 2C₆H₆)

Enthalpy of reaction

( • ) +  = ( • 2)

By formula: (Mn⁺ • C₆H₆) + C₆H₆ = (Mn⁺ • 2C₆H₆)

Enthalpy of reaction

( • ) +  = ( • 2)

By formula: (Ni⁺ • C₆H₆) + C₆H₆ = (Ni⁺ • 2C₆H₆)

Enthalpy of reaction

( • ) +  = ( • 2)

By formula: (Cu⁺ • C₆H₆) + C₆H₆ = (Cu⁺ • 2C₆H₆)

Enthalpy of reaction

(CAS Reg. No. 79431-04-2 • 4294967295) +  = CAS Reg. No. 79431-04-2

By formula: (CAS Reg. No. 79431-04-2 • 4294967295C₆H₆) + C₆H₆ = CAS Reg. No. 79431-04-2

 +  = ( • )

By formula: Ni⁺ + C₆H₆ = (Ni⁺ • C₆H₆)

Enthalpy of reaction

Gas phase ion energetics data

Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, References, Notes

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

Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
B - John E. Bartmess
MM - Michael M. Meot-Ner (Mautner)
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to C₆H₆⁺ (ion structure unspecified)

Proton affinity at 298K

Gas basicity at 298K

Ionization energy determinations

Appearance energy determinations

De-protonation reactions

C₆H₅^- +  =

By formula: C₆H₅^- + H⁺ = C₆H₆

References

Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics 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]

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]

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]

Ahlberg, Blanchard, et al., 1937
Ahlberg, J.E.; Blanchard, E.R.; Lundberg, W.O., The heat capacities of benzene, methyl alcohol and glycerol at very low temperatures, J. Chem. Phys., 1937, 5, 537-551. [all data]

Grolier, Roux-Desgranges, et al., 1993
Grolier, J.-P.E.; Roux-Desgranges, G.; Berkane, M.; Jimenez, E.; Wilhelm, E., Heat capacities and densities of mixtures of very polar substances 2. Mixtures containing N,N-dimethylformamide, J. Chem. Thermodynam., 1993, 25(1), 41-50. [all data]

Czarnota, 1991
Czarnota, I., Heat capacity of benzene at high pressures, J. Chem. Thermodynam., 1991, 23, 25-30. [all data]

Lainez, Rodrigo, et al., 1989
Lainez, A.; Rodrigo, M.M.; Wilhelm, E.; Grolier, J.-P.E., Excess volumes and excess heaat capacitiies of some mixtures with trans,trans,cis-1,5,9-cyclododecatriene at 298.15K, J. Chem. Eng. Data, 1989, 34, 332-335. [all data]

Shiohama, Ogawa, et al., 1988
Shiohama, Y.; Ogawa, H.; Murakami, S.; Fujihara, I., Excess molar isobaric heat capacities and isentropic compressibilities of (cis- or trans-decalin + benzene or toluene or iso-octane or n-heptane) at 298.15 K, J. Chem. Thermodynam., 1988, 20, 1183-1189. [all data]

Grolier, Roux-Desgranges, et al., 1987
Grolier, J.-P.E.; Roux-Desgranges, G.; Kooner, Z.S.; Smith, J.F.; Hepler, L.G., Thermal and volumetric properties of chloroform + benzene mixtures and the ideal associated solution model of complex formation, J. Solution Chem., 1987, 16, 745-752. [all data]

Kalali, Kohler, et al., 1987
Kalali, H.; Kohler, F.; Svejda, P., Excess properties of the mixture bis(2-dichlorethyl)ether (chlorex) + 2,2,4-trimethylpentane (isooctane), Monatsh. Chem., 1987, 118, 1-18. [all data]

Tanaka, 1987
Tanaka, R., Excess heat capacities for mixture of benzene with n-heptane at 293.15, 298.15 and 303.15 K, J. Chem. Eng. Data, 1987, 32, 176-177. [all data]

Naziev, Bashirov, et al., 1986
Naziev, Ya.M.; Bashirov, M.M.; Badalov, Yu.A., Experimental device for measurement of isobaric specific heat of electrolytes at elevated pressures, Inzh-Fiz. Zhur., 1986, 51(5), 789-795. [all data]

Reddy, 1986
Reddy, K.S., Isentropic compressibilities of binary liquid mixtures at 303.15 and 313.15 K, J. Chem. Eng. Data, 1986, 31, 238-240. [all data]

Ogawa and Murakami, 1985
Ogawa, H.; Murakami, S., Flow microcalorimeter for heat capacities of solutions, Thermochim. Acta, 1985, 88, 255-260. [all data]

Tanaka, 1985
Tanaka, R., Excess heat capacities for mixtures of benzene with cyclopentane, methylcyclohexane, and cyclooctane at 298.15 K, J. Chem. Eng. Data, 1985, 30, 267-269. [all data]

Gorbunova, Simonov, et al., 1983
Gorbunova, N.I.; Simonov, V.M.; Shipova, V.A., Thermodynamic properties of benzene, Teplofiz. Vys. Temp., 1983, 21(2), 270-275. [all data]

Gorbunova, Grigoriev, et al., 1982
Gorbunova, N.I.; Grigoriev, V.A.; Simonov, V.M.; Shipova, V.A., Heat capacity of liquid benzene and hexafluorobenzene at atmospheric pressure, Int. J. Thermophysics, 1982, 3, 1-15. [all data]

Grolier, Inglese, et al., 1982
Grolier, J.-P.E.; Inglese, A.; Wilhelm, E., Excess volumes and excess heat capacities of tetrachloroethene + cyclohexane, + methylcyclohexane, + benzene, and + toluene at 298.15 K, J. Chem. Thermodynam., 1982, 14, 523-529. [all data]

Tanaka, 1982
Tanaka, R., Determination of excess heat capacities of (benzene + tetrachloromethane and + cyclohexane) between 293.15 and 303.15 K by use of a Picker flow calorimeter, J. Chem. Thermodynam., 1982, 14, 259-268. [all data]

Wilhelm, Faradjzadeh, et al., 1982
Wilhelm, E.; Faradjzadeh, A.; Grolier, J.-P.E., Excess volumes and excess heat capacities of 2,3-dimethylbutane + butane and + toluene, J. Chem. Thermodynam., 1982, 14, 1199-1200. [all data]

Atalla, El-Sharkawy, et al., 1981
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Grolier, Wilhelm, et al., 1978
Grolier, J.-P.E.; Wilhelm, E.; Hamedi, M.H., Molar heat capacities and isothermal compressibility of binary liquid mixtures: carbon tetrachloride + benzene, carbon tetrachloride + cyclohexane and benzene + cyclohexane, Ber. Bunsenges. Phys. Chem., 1978, 82, 1282-1290. [all data]

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Wilhelm, E.; Grolier, J.-P.E.; Karbalai Ghassemi, M.H., Molar heat capacities of binary liquid mixtures: 1,2-dichloroethane + benzene, + toluene, and + p-xylene, Ber. Bunsenges. Phys. Chem., 1977, 81, 925-930. [all data]

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Rajagopal, E.; Subrahmanyam, S.V., Excess function of VE,(dVE/dp)T, and CpE of isooctane + benzene and + toluene, J. Chem. Thermodynam., 1974, 6, 873-876. [all data]

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Recko, 1968
Recko, W.M., Excess heat capacity of the binary systems formed by n-propyl alcohol with benzene, mesitylene and cyclohexane, Bull. Acad. Pol. Sci. Ser. Sci. Chim., 1968, 16, 549-552. [all data]

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

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Rastorguev, Yu.L.; Ganiev, Yu.A., Study of the heat capacity of selected solvents, Izv. Vyssh. Uchebn. Zaved. Neft Gaz. 10, 1967, No.1, 79-82. [all data]

Findenegg, Gruber, et al., 1965
Findenegg, G.H.; Gruber, K.; Pereira, J.F.; Kohler, F., Kalorimetrische Messungen an Mischungen von Nichtelektrolyten, 1. Mitt.: Molwarme des Systems 1,2-Dibromathan-Benzol, Monatsh. Chem., 1965, 96, 669-678. [all data]

Rabinovich and Nikolaev, 1962
Rabinovich, I.B.; Nikolaev, P.N., Isotopic effect in the specific heat of some deutero compounds, Dokl. Akad. Nauk, 1962, SSSR 142, 1335-1338. [all data]

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Swietoslawski, W.; Zielenkiewicz, A., Mean specific heat in homologous series of binary and ternary positive azeotropes, Bull. Acad. Pol. Sci. Ser. Sci. Chim., 1960, 8, 651-653. [all data]

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