Benzoic acid

• Formula: C₇H₆O₂
• Molecular weight: 122.1213
• IUPAC Standard InChI: InChI=1S/C7H6O2/c8-7(9)6-4-2-1-3-5-6/h1-5H,(H,8,9) Copy

  
• IUPAC Standard InChIKey: WPYMKLBDIGXBTP-UHFFFAOYSA-N Copy
• CAS Registry Number: 65-85-0
• 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.
• Other names: Benzenecarboxylic acid; Benzeneformic acid; Benzenemethanoic acid; Benzoesaeure GK; Benzoesaeure GV; Carboxybenzene; Dracylic acid; Phenylcarboxylic acid; Phenylformic acid; Retarder BA; Retardex; Salvo, liquid; Solvo, powder; Tenn-Plas; Acide benzoique; Benzoic acid, tech.; Kyselina benzoova; Benzoesaeure; Salvo powder; E 210; HA 1; HA 1 (acid); Phenylcarboxy; Benzenemethonic acid; Diacylic acid; Flowers of benjamin; Flowers of benzoin; Oracylic acid; Retarder BAX; NSC 149
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Phase change data
  • Henry's Law data
  • Ion clustering data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • UV/Visible spectrum
  • Gas Chromatography
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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Gas 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 by: Glushko Thermocenter, Russian Academy of Sciences, Moscow

Constant pressure heat capacity of gas

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:
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

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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:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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.

Individual Reactions

 +  =

By formula: C₇H₅O₂^- + H⁺ = C₇H₆O₂

 +  = ( • )

By formula: Br^- + C₇H₆O₂ = (Br^- • C₇H₆O₂)

Free energy of reaction

 +  =  + 

By formula: H₂O + C₇H₅ClO = C₇H₆O₂ + HCl

 +  = 2

By formula: C₇H₆O + C₇H₆O₃ = 2C₇H₆O₂

 +  =  + 

By formula: C₇H₅BrO + H₂O = HBr + C₇H₆O₂

 +  =  + 

By formula: C₇H₅IO + H₂O = HI + C₇H₆O₂

 +  =  + 

By formula: H₂O + C₈H₈O₂ = C₇H₆O₂ + CH₄O

Gas phase ion energetics 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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias

Data compiled as indicated in comments:
B - John E. Bartmess
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

Ionization energy determinations

Appearance energy determinations

De-protonation reactions

 +  =

By formula: C₇H₅O₂^- + H⁺ = C₇H₆O₂

References

Go To: Top, Gas phase thermochemistry data, 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.

Stull D.R., 1969
Stull D.R., Jr., The Chemical Thermodynamics of Organic Compounds. Wiley, New York, 1969. [all data]

Ali N., 1983
Ali N., Thermodynamic functions of the benzoic acid, phthalic acid and salicylic acid, Indian J. Phys., 1983, B57, 413-419. [all data]

Gundry, Harrop, et al., 1969
Gundry, H.A.; Harrop, D.; Head, A.J.; Lewis, G.B., Thermodynamic properties of organic oxygen compounds. 21. Enthalpies of combustion of benzoic acid, pentan-1-ol, octan-1-ol, and hexadecan-1-ol, J. Chem. Thermodyn., 1969, 1, 321-332. [all data]

Pedley, Naylor, et al., 1986
Pedley, J.B.; Naylor, R.D.; Kirby, S.P., Thermochemical Data of Organic Compounds, Chapman and Hall, New York, 1986, 1-792. [all data]

Corral, 1960
Corral, L.B., Investigaciones termoquimicas sobre los acidos toluicos y dimetilbenzoicos, Rev. R. Acad. Cienc., 1960, 54, 365-403. [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]

Kaji, Tochigi, et al., 1993
Kaji, K.; Tochigi, K.; Misawa, Y.; Suzuki, T., An adiabatic calorimeter for samples of mass less than 0.1 g and heat capacity measurements on benzoic acid at temperatures from 19 K to 312 K, J. Chem. Thermodynam., 1993, 25(6), 699-709. [all data]

Arvidsson, Falk, et al., 1976
Arvidsson, K.; Falk, B.; Sunner, S., A small sample low temperature adiabatic heat capacity calorimeter with an automatic data acquisition system, Chem. Scr., 1976, 10, 193-200. [all data]

Furukawa, McCoskey, et al., 1951
Furukawa, G.T.; McCoskey, R.E.; King, G.J., Calorimetric properties of benzoic acid from 0 to 410K, J. Res., 1951, NBS 47, 256-261. [all data]

Davies and Staveley, 1957
Davies, T.; Staveley, L.A.K., The behaviour of the ammonium ion in the ammonium salt of tetraphenylboron by comparison of the heat capacities of the ammonium, rubidium, and potassium salts, Trans. Faraday Soc., 1957, 53, 19-30. [all data]

Parks, Huffman, et al., 1933
Parks, G.S.; Huffman, H.M.; Barmore, M., Thermal data on organic compounds. XI. The heat capacities, entropies and free energies of ten compounds containing oxygen or nitrogen. J. Am. Chem. Soc., 1933, 55, 2733-2740. [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]

Sorai, Kaji, et al., 1992
Sorai, M.; Kaji, K.; Kaneko, Y., An automated adiabatic calorimeter for the temperature range 13 K to 530 K The heat capacities for benzoic acid from 15 K to 305 K and of synthetic sapphire from 60 K to 505 K, J. Chem. Thermodynam., 1992, 24(2), 167-180. [all data]

Moriya, Matsuo, et al., 1982
Moriya, K.; Matsuo, T.; Suga, H., Low temperature adiabatic calorimeter with a built-in cryo-refrigerator, J. Chem. Thermodynam., 1982, 14, 1143-1148. [all data]

Shakirov and Lyubarskii, 1980
Shakirov, R.F.; Lyubarskii, M.V., Low-temperature heat capacity and thermodynamic functions of methyl trichlorothioacrylate, SPSTL Deposited Publication 3 KhP-D80, 1980, 19p. [all data]

Tatsumi, Matsuo, et al., 1975
Tatsumi, M.; Matsuo, T.; Suga, H.; Seki, S., An adiabatic calorimeter for high-resolution heat capacity measurements in the temperature range from 12 to 300 K, Bull. Chem. Soc. Japan, 1975, 48, 3060-3066. [all data]

Mosselman, Mourik, et al., 1974
Mosselman, C.; Mourik, J.; Dekker, H., Enthalpies of phase change and heat capacities of some long-chain alcohols. Adiabatic semi-microcalorimeter for studies of polymorphism, J. Chem. Thermodynam., 1974, 6, 477-487. [all data]

Konicek, Suurkuusk, et al., 1971
Konicek, J.; Suurkuusk, J.; Wadso, I., A precise drop heat capacity calorimeter for small samples, Chemica Scripta, 1971, 1, 217-220. [all data]

Justice, 1969
Justice, B.H., Low temperature thermodynamic properties of aluminum trichloride, J. Chem. Eng. Data, 1969, 14, 4-5. [all data]

Suga and Seki, 1965
Suga, H.; Seki, S., An automatic adiabatic calorimeter for low temperatures. The heat capacity of standard benzoic acid, Bull. Chem. Soc. Japan, 1965, 38, 1000-1006. [all data]

David, 1964
David, D.J., Determination of specific heat and heat of fusion by differential thermal analysis. Study of theory and operating parameters, Anal. Chem., 1964, 36, 2162-2166. [all data]

Kolesov, Seregin, et al., 1962
Kolesov, V.P.; Seregin, E.A.; Skuratov, S.M., Adiabatic calorimeter of small volume for the determination of true heat capacity over the range 12-340K, Zhur. Fiz. Khim., 1962, 36, 647-651. [all data]

Popov and Kolesov, 1956
Popov, M.M.; Kolesov, V.P., Determination of the true specific heat of solid substances at low temperatures, Zhur. Obshch. Khim., 1956, 26, 2385-2393. [all data]

Ginnings and Furukawa, 1953
Ginnings, D.C.; Furukawa, G.T., Heat capacity standards for the range 14 to 1200°K, J. Am. Chem. Soc., 1953, 75, 522-527. [all data]

Satoh and Sogabe, 1939
Satoh, S.; Sogabe, T., The specific heats of some solid aromatic acids and their ammonium salts and the atomic heat of nitrogen, Sci. Pap. Inst. Phys. Chem. Res. (Tokyo), 1939, 36, 449-457. [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]

Fujio, McIver, et al., 1981
Fujio, M.; McIver, R.T., Jr.; Taft, R.W., Effects on the acidities of phenols from specific substituent-solvent interactions. Inherent substituent parameters from gas phase acidities, J. Am. Chem. Soc., 1981, 103, 4017. [all data]

Cumming and Kebarle, 1978
Cumming, J.B.; Kebarle, P., Summary of gas phase measurements involving acids AH. Entropy changes in proton transfer reactions involving negative ions. Bond dissociation energies D(A-H) and electron affinities EA(A), Can. J. Chem., 1978, 56, 1. [all data]

Caldwell, Renneboog, et al., 1989
Caldwell, G.; Renneboog, R.; Kebarle, P., Gas Phase Acidities of Aliphatic Carboxylic Acids, Based on Measurements of Proton Transfer Equilibria, Can. J. Chem., 1989, 67, 4, 661, https://doi.org/10.1139/v89-092 . [all data]

Paul and Kebarle, 1991
Paul, G.J.C.; Kebarle, P., Stabilities of Complexes of Br- with Substituted Benzenes (SB) Based on Determinations of the Gas-Phase Equilibria Br- + SB = (BrSB)-, J. Am. Chem. Soc., 1991, 113, 4, 1148, https://doi.org/10.1021/ja00004a014 . [all data]

Moselhy and Pritchard, 1975
Moselhy, G.M.; Pritchard, H.O., The thermochemistry of the chloro-benzoyl chlorides, J. Chem. Thermodyn., 1975, 7, 977-982. [all data]

Carson, Pritchard, et al., 1950
Carson, A.S.; Pritchard, H.O.; Skinner, H.A., The heats of hydrolysis of the benzoyl halides, J. Chem. Soc., 1950, 656-659. [all data]

Davies, Dunning, et al., 1972
Davies, J.V.; Dunning, B.K.; Pritchard, H.O., The enthalpy of formation of benzoyl chloride, J. Chem. Thermodyn., 1972, 4, 731-737. [all data]

Briner and Chastonay, 1954
Briner, E.; Chastonay, P., Etude thermochemique de l'autoxydation de Valdehyde benzoique, Helv. Chim. Acta, 1954, 238, 539-541. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

Guthrie and Cullimore, 1980
Guthrie, J.P.; Cullimore, P.A., Effect of the acyl substituent on the equilibrium constant for hydration of esters, Can. J. Chem., 1980, 58, 1281-1294. [all data]

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

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Klasinc, L.; Kovac, B.; Gusten, H., Photoelectron spectra of acenes. Electronic structure and substituent effects, Pure Appl. Chem., 1983, 55, 289. [all data]

Meeks, Wahlborg, et al., 1981
Meeks, J.; Wahlborg, A.; McGlynn, S.P., Photoelectron spectroscopy of carbonyls: Benzoic acid and its derivatives, J. Electron Spectrosc. Relat. Phenom., 1981, 22, 43. [all data]

Benoit, 1973
Benoit, F., Substituent effects in mass spectrometry. III. Substituent effects in the dissociation of the molecular ions of para and meta subtituted benzoic acids, Org. Mass Spectrom., 1973, 7, 295. [all data]

Benoit, 1973, 2
Benoit, F., The benzoyl cation: The participation of isolated electronic excited states in the dissociation of molecular ions of the form [C₆H₅COX]⁺, Org. Mass Spectrom., 1973, 7, 1407. [all data]

Foffani, Pignataro, et al., 1964
Foffani, A.; Pignataro, S.; Cantone, B.; Grasso, F., Ionization potentials and substituent effects for aromatic carbonyl compounds, Z. Physik. Chem. (Frankfurt), 1964, 42, 221. [all data]

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Tajima, S.; Azami, T.; Tsuchiya, T., An investigation of the decomposition of the common intermediate ions produced by electron impact, Org. Mass Spectrom., 1977, 12, 24. [all data]

Notes

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

• Symbols used in this document:
  

  AE	Appearance energy
  Cp,gas	Constant pressure heat capacity of gas
  Cp,liquid	Constant pressure heat capacity of liquid
  Cp,solid	Constant pressure heat capacity of solid
  S°solid,1 bar	Entropy of solid at standard conditions (1 bar)
  T	Temperature
  ΔcH°liquid	Enthalpy of combustion of liquid at standard conditions
  ΔcH°solid	Enthalpy of combustion of solid at standard conditions
  ΔfH°solid	Enthalpy of formation of solid at standard conditions
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔrS°	Entropy of reaction at standard conditions

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