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)
IUPAC Standard InChIKey: WPYMKLBDIGXBTP-UHFFFAOYSA-N
CAS Registry Number: 65-85-0
Chemical structure:
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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
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Enthalpy of combustion of solid at standard conditions (nominally 298.15 K, 1 atm.)

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Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Δ_cH°_solid (kJ/mol)	Method	Reference	Comment
-3228.0 ± 0.5	Ccb	Li, Gao, et al., 1990	Corresponding Δ_fHº_solid = -384.07 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
-3228.06 ± 0.44	Ccb	Pilcher, Bickerton, et al., 1984	Corresponding Δ_fHº_solid = -384.00 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
-3222.5 ± 4.2	Ccb	Holdiness, 1983	Corresponding Δ_fHº_solid = -389.5 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
-3226.87 ± 0.18	Ccb	Mosselman and Dekker, 1969	Corresponding Δ_fHº_solid = -385.19 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
-3254.71 ± 0.41	Ccb	Churney and Armstrong, 1968	Hc =-26434.0±3.3 J/g; Corresponding Δ_fHº_solid = -357.35 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS; Data excluded from overall average
-3227.3 ± 0.3	Ccb	Corral, 1960	Corresponding Δ_fHº_solid = -384.8 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
-3227.40 ± 0.30	Ccb	Gundry and Meetham, 1958	Reanalyzed by Cox and Pilcher, 1970, Original value = -3228.3 kJ/mol; Corresponding Δ_fHº_solid = -384.66 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
-3227.20 ± 0.50	Ccb	Coops, Adriaanse, et al., 1956	Reanalyzed by Cox and Pilcher, 1970, Original value = -3226. ± 4. kJ/mol; Corresponding Δ_fHº_solid = -384.86 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
-3227.30 ± 0.30	Ccb	Challoner, Gundry, et al., 1955	Reanalyzed by Cox and Pilcher, 1970, Original value = -3228.50 kJ/mol; Corresponding Δ_fHº_solid = -384.76 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
-3227.51 ± 0.32	Ccb	Jessup, 1946	Corresponding Δ_fHº_solid = -384.55 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
-3227.6 ± 0.3	Ccb	Prosen and Rossini, 1944	Corresponding Δ_fHº_solid = -384.5 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
-3226.39 ± 0.32	Ccb	Jessup, 1942	see Jessup and Green, 1934; Corresponding Δ_fHº_solid = -385.67 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
-3229.8	Ccb	Matsui and Abe, 1939	Corresponding Δ_fHº_solid = -382.3 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
-3228.79	Ccb	Hirsbrunner, 1934	Corresponding Δ_fHº_solid = -383.27 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
-3231.3	Ccb	Milone and Rossignoli, 1932	Corresponding Δ_fHº_solid = -380.7 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
-3229.0	Ccb	Burriel, 1931	Corresponding Δ_fHº_solid = -383.1 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
-3226.	Ccb	Landrieu, Baylocq, et al., 1929	Corresponding Δ_fHº_solid = -386. kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
-3231.97	Ccb	Wrede, 1911	Corresponding Δ_fHº_solid = -380.09 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS

References

Go To: Top, Enthalpy of combustion of solid at standard conditions (nominally 298.15 K, 1 atm.), Notes

Li, Gao, et al., 1990
Li, S.; Gao, P.; Yu, X.; Li, X.; He, X., Certification of national research center for certified reference materials (NRCCRM, Beijing) thermochemical standard benzoic acid, J. Chem. Thermodyn., 1990, 22, 319-320. [all data]

Pilcher, Bickerton, et al., 1984
Pilcher, G.; Bickerton, J.; Ribeiro Da Silva, M.M.D.C.C., Certification of B.D.H. thermochemical standard benzoic acid, J. Chem. Thermodyn., 1984, 16, 401-402. [all data]

Holdiness, 1983
Holdiness, M.R., Heats of atomization and resonance energy of some ortho-substituted benzoic acids, Thermochim. Acta, 1983, 71, 257-263. [all data]

Mosselman and Dekker, 1969
Mosselman, C.; Dekker, H., The heat of combustion of benzoic acid - NBS standard sample 391, Recueil, 1969, 88, 161-176. [all data]

Churney and Armstrong, 1968
Churney, K.L.; Armstrong, G.T., Studies in bomb calorimetry. A new determination of the energy of combustion of benzoic acid in terms of electrical units, J. Res. NBS, 1968, 72, 453-465. [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]

Gundry and Meetham, 1958
Gundry, H.A.; Meetham, A.R., Comparison of calorimeters for evaluating the heat of combustion of benzoic acid, Trans. Faraday Soc., 1958, 54, 665-670. [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]

Coops, Adriaanse, et al., 1956
Coops, J.; Adriaanse, N.; Van Nes, K., The absolute heat of combustion of benzoic acid, Rec. Trav. Chim. Pays/Bas, 1956, 75, 237-253. [all data]

Challoner, Gundry, et al., 1955
Challoner, A.R.; Gundry, H.A.; Meetham, A.R., An electrically calibrated bomb calorimeter, Phil. Trans. Roy. Soc. London, 1955, 247, 553-580. [all data]

Jessup, 1946
Jessup, R.S., Note on the density and heat of combustion of benzoic acid, J. Res. NBS, 1946, 36, 421-423. [all data]

Prosen and Rossini, 1944
Prosen, E.J.; Rossini, F.D., Some experimental data on the heats of combustion of benzoic acid and carbon (graphite), J. Res. NBS, 1944, 33, 439-446. [all data]

Jessup, 1942
Jessup, R.S., Heat of combustion of benzoic acid, with special reference to the standardization of bomb calorimeters, J. Res. NBS, 1942, 29, 247-270. [all data]

Jessup and Green, 1934
Jessup, R.S.; Green, C.B., Heat of combustion of standard sample benzoic acid, J. Res. NBS, 1934, 13, 469-495. [all data]

Matsui and Abe, 1939
Matsui, M.; Abe, T., Arbeitsweise eines adiabatischen calormeters, Bull. Tokyo Univ. Eng., 1939, 8, 339. [all data]

Hirsbrunner, 1934
Hirsbrunner, H., Uber das gleichgewicht der thermischen dissoziation der salicylsaure, Helv. Chim. Acta, 1934, 17, 477-504. [all data]

Milone and Rossignoli, 1932
Milone, M.; Rossignoli, P., Sul calore di combustione di alcune miscele di composti organici, Gazz. Chim. Ital., 1932, 62, 644-655. [all data]

Burriel, 1931
Burriel, F., 7. Estudio fisico-quimico de algunos compuestos organicos solidos a la temperatura ordinaria, que se proponen como patrones de temperatura, An. R. Soc. Esp. Fis. Quim., 1931, 29, 89-125. [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]

Wrede, 1911
Wrede, F., Uber die Bestimmung von Berbrennungswarmen mittels der kalorimetrischen Bombe unter Benutzung des Platinwiderstandsthermometers, Z. Phys. Chem. (Leipzig), 1911, 81-94. [all data]

Notes

Go To: Top, Enthalpy of combustion of solid at standard conditions (nominally 298.15 K, 1 atm.), References

Symbols used in this document:

Δ_cH°_solid Enthalpy of combustion of solid at standard conditions
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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