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:
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
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Gas phase thermochemistry data

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Data compiled by: Glushko Thermocenter, Russian Academy of Sciences, Moscow

Constant pressure heat capacity of gas

C_p,gas (J/mol*K)	Temperature (K)	Reference	Comment
103.47	298.15	Stull D.R., 1969	These values were calculated from preliminary assignment of vibrational frequencies. Statistical calculation [ Ali N., 1983] seems to be erroneous.
104.01	300.
138.36	400.
170.54	500.
196.73	600.
217.82	700.
234.89	800.
248.95	900.
260.66	1000.

Phase change data

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Data compiled as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity	Value	Units	Method	Reference	Comment
T_boil	522.2	K	N/A	Weast and Grasselli, 1989	BS
T_boil	522.	K	N/A	Buckingham and Donaghy, 1982	BS
T_boil	523.18	K	N/A	Burriel, 1931	Uncertainty assigned by TRC = 0.2 K; TRC
T_boil	523.59	K	N/A	Burriel, 1931	Uncertainty assigned by TRC = 0.2 K; TRC
Quantity	Value	Units	Method	Reference	Comment
T_fus	395.2 ± 0.7	K	AVG	N/A	Average of 18 out of 20 values; Individual data points
Quantity	Value	Units	Method	Reference	Comment
T_triple	395.52	K	N/A	Marsh, 1987	Uncertainty assigned by TRC = 0.005 K; recommended as calibration standard; TRC
T_triple	395.520	K	N/A	Andon and Connett, 1980	Uncertainty assigned by TRC = 0.01 K; TRC
T_triple	395.52	K	N/A	Ginnings and Furukawa, 1953	Uncertainty assigned by TRC = 0.01 K; TRC
T_triple	395.52	K	N/A	Furukawa, McCoskey, et al., 1951	Uncertainty assigned by TRC = 0.01 K; TRC
Quantity	Value	Units	Method	Reference	Comment
Δ_vapH°	78.9	kJ/mol	CGC	Chickos, Hosseini, et al., 1995	Based on data from 353. to 393. K.; AC
Quantity	Value	Units	Method	Reference	Comment
Δ_subH°	90. ± 4.	kJ/mol	AVG	N/A	Average of 13 values; Individual data points

Reduced pressure boiling point

T_boil (K)	Pressure (bar)	Reference	Comment
406.2	0.013	Weast and Grasselli, 1989	BS
406.	0.013	Buckingham and Donaghy, 1982	BS

Enthalpy of vaporization

Δ_vapH (kJ/mol)	Temperature (K)	Method	Reference	Comment
87.450	335.	N/A	Torres-Gomez, Barreiro-Rodriguez, et al., 1988	DH
63.3 ± 0.6	401. to 416.	N/A	Pena, Ribet, et al., 2003	AC
66.3	420.	A	Stephenson and Malanowski, 1987	Based on data from 405. to 523. K.; AC
67.8	368. to 428.	GS	Matsubara and Kuwamoto, 1985	AC
65.4	428.	I	Cramer, 1943	AC
67.7	416.	MM,A	Klosky, Woo, et al., 1927	Based on data from 401. to 520. K.; AC

Entropy of vaporization

Δ_vapS (J/mol*K)	Temperature (K)	Reference	Comment
261.0	335.	Torres-Gomez, Barreiro-Rodriguez, et al., 1988	DH

Antoine Equation Parameters

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

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Temperature (K)	A	B	C	Reference	Comment
369. to 522.4	4.47834	1771.357	-127.484	Stull, 1947	Coefficents calculated by NIST from author's data.

Enthalpy of sublimation

Δ_subH (kJ/mol)	Temperature (K)	Method	Reference	Comment
89.230	298.15	N/A	Torres-Gomez, Barreiro-Rodriguez, et al., 1988	DH
90.9 ± 2.0	340. to 410.	TG-TS	Selvakumar, Raghunathan, et al., 2009	AC
90.0 ± 0.5	307.	ME	Ribeiro da Silva, Monte, et al., 2006	Based on data from 299. to 317. K.; AC
93. ± 4.	294. to 331.	ME	Ginkel, Kruif, et al., 2001	AC
90.5 ± 0.3	323. to 394.	GS	Zielenkiewicz, Perlovich, et al., 1999	AC
86.7	313. to 343.	TGA	Elder, 1997	AC
88.7 ± 0.9	311.	ME	Da Silva and Monte, 1990	Based on data from 307. to 314. K.; AC
87.5 ± 0.3	335.	C	Torres-Gomez, Barreiro-Rodriguez, et al., 1988	AC
90.8 ± 0.6	306.	QR	Glukhova, Arkhangelova, et al., 1985	Based on data from 293. to 319. K.; AC
95.1 ± 1.8	294.	N/A	Kaisersberger, Hädrich, et al., 1985	AC
87.8	368. to 428.	GS	Matsubara and Kuwamoto, 1985	AC
91. ± 2.	293. to 313.	ME	Colomina, Jimenez, et al., 1982	AC
89.5 ± 0.05	353.	DM	de Kruif and Blok, 1982	Based on data from 316. to 391. K.; AC
89.1 ± 0.2	320. to 370.	C	Murata, Sakiyama, et al., 1982	AC
85. ± 2.	369.	SG	Sachinidis and Hill, 1980	Based on data from 344. to 395. K.; AC
88.3 ± 2.9	281. to 323.	LE	Nowak, Szczepaniak, et al., 1978	AC
88.5 ± 1.6	293. to 318.	TE	DeKruif, van Ginkel, et al., 1975	AC
92.9 ± 0.2	296.	ME	Arshadi, 1974	Based on data from 273. to 318. K.; AC
88.1 ± 0.2	293. to 311.	TCM	de Kruif and Oonk, 1973	AC
89.0 ± 0.4	338. to 383.	ME	Malaspina, 1973	AC
89.3 ± 0.4	338. to 383.	C	Malaspina, 1973	AC
90. ± 0.3	293. to 308.	ME	Colomina, Monzon, et al., 1972	AC
86.6 ± 1.3	290. to 315.	ME,C	Wiedemann, 1972	AC
89.1	314.	N/A	Ashcroft, 1971	Based on data from 299. to 329. K.; AC
90.4 ± 0.8	367.	HSA	Melia and Merrifield, 1970	Based on data from 324. to 392. K.; AC
86.6 ± 1.7	303.	ME	Wiedemann and Waughna, 1970	Based on data from 290. to 315. K. See also Zielenkiewicz, Perlovich, et al., 1999.; AC
88.9 ± 0.5	363.	GS	Mertl, 1968	Based on data from 348. to 378. K.; AC
90.9	299.	ME	Davies and Kybett, 1965	Based on data from 291. to 307. K.; AC
84.2 ± 0.8	318.	TE	Wolf and Weghofer, 1938	AC
84.1 ± 0.8	318.	V	Wolf and Weghofer, 1938, 2	ALS
85.8	383.	T	Hirsbrunner, 1934	Based on data from 333. to 389. K.; AC
84.5 ± 0.5	364.	I	Klosky, Woo, et al., 1927	Based on data from 377. to 394. K.; AC

Entropy of sublimation

Δ_subS (J/mol*K)	Temperature (K)	Reference	Comment
299.3	298.15	Torres-Gomez, Barreiro-Rodriguez, et al., 1988	DH

Enthalpy of fusion

Δ_fusH (kJ/mol)	Temperature (K)	Method	Reference	Comment
18.006	395.52	N/A	Ginnings and Furukawa, 1953, 2	DH
18.000	395.52	N/A	Furukawa, McCoskey, et al., 1951, 2	DH
16.99	396.9	DSC	Brittain, 2009	AC
17.3	394.4	DSC	Sharma, Kant, et al., 2003	See also Sharma, Jamwal, et al., 2004.; AC
17.1	395.4	DSC	Roy, Riga, et al., 2002	AC
17.99	395.5	N/A	Pitzer, Peiper, et al., 1984	AC
16.230	395.	N/A	Pacor, 1967	DH
17.320	395.0	N/A	Andrews, Lynn, et al., 1926	DH
17.400	395.	N/A	David, 1964	Temperature not measured.; DH

Entropy of fusion

Δ_fusS (J/mol*K)	Temperature (K)	Reference	Comment
45.52	395.52	Ginnings and Furukawa, 1953, 2	DH
45.51	395.52	Furukawa, McCoskey, et al., 1951, 2	DH
41.1	395.	Pacor, 1967	DH
43.8	395.0	Andrews, Lynn, et al., 1926	DH
44.	395.	David, 1964	Temperature; DH

Enthalpy of phase transition

ΔH_trs (kJ/mol)	Temperature (K)	Initial Phase	Final Phase	Reference	Comment
18.062	395.527	crystaline, I	liquid	Andon and Connett, 1980, 2	DH

Entropy of phase transition

ΔS_trs (J/mol*K)	Temperature (K)	Initial Phase	Final Phase	Reference	Comment
45.67	395.527	crystaline, I	liquid	Andon and Connett, 1980, 2	DH

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:

Gas phase ion energetics data

Go To: Top, Gas phase thermochemistry data, Phase change data, References, Notes

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

Quantity	Value	Units	Method	Reference	Comment
Proton affinity (review)	821.1	kJ/mol	N/A	Hunter and Lias, 1998	HL
Quantity	Value	Units	Method	Reference	Comment
Gas basicity	790.1	kJ/mol	N/A	Hunter and Lias, 1998	HL

Ionization energy determinations

IE (eV)	Method	Reference	Comment
9.3	PE	Klasinc, Kovac, et al., 1983	LBLHLM
9.6	PE	Meeks, Wahlborg, et al., 1981	LLK
9.8 ± 0.2	EI	Benoit, 1973	LLK
9.75	EI	Benoit, 1973, 2	LLK
9.73 ± 0.09	EI	Foffani, Pignataro, et al., 1964	RDSH
9.47	PE	Klasinc, Kovac, et al., 1983	Vertical value; LBLHLM

Appearance energy determinations

Ion	AE (eV)	Other Products	Method	Reference	Comment
C₆H₅⁺	14.3 ± 0.07	?	EI	Tajima, Azami, et al., 1977	LLK
C₆H₅⁺	15.1 ± 0.2	CO+OH	EI	Benoit, 1973	LLK
C₆H₅⁺	15.08	CO+OH	EI	Benoit, 1973, 2	LLK
C₇H₅O⁺	11.5 ± 0.07	OH	EI	Tajima, Azami, et al., 1977	LLK
C₇H₅O⁺	12.1 ± 0.2	OH	EI	Benoit, 1973	LLK
C₇H₅O⁺	12.11	OH	EI	Benoit, 1973, 2	LLK

De-protonation reactions

+ = Benzoic acid

By formula: C₇H₅O₂^- + H⁺ = C₇H₆O₂

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	1423. ± 9.2	kJ/mol	G+TS	Fujio, McIver, et al., 1981	gas phase; value altered from reference due to change in acidity scale; B
Δ_rH°	1423. ± 12.	kJ/mol	G+TS	Cumming and Kebarle, 1978	gas phase; Recalculated from data in paper; error in Table vs. ladder; B
Δ_rH°	1423. ± 9.2	kJ/mol	G+TS	Caldwell, Renneboog, et al., 1989	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1393. ± 8.4	kJ/mol	IMRE	Fujio, McIver, et al., 1981	gas phase; value altered from reference due to change in acidity scale; B
Δ_rG°	1393. ± 8.4	kJ/mol	IMRE	Cumming and Kebarle, 1978	gas phase; Recalculated from data in paper; error in Table vs. ladder; B
Δ_rG°	1394. ± 8.4	kJ/mol	IMRE	Caldwell, Renneboog, et al., 1989	gas phase; B

References

Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, Notes

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]

Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]

Buckingham and Donaghy, 1982
Buckingham, J.; Donaghy, S.M., Dictionary of Organic Compounds: Fifth Edition, Chapman and Hall, New York, 1982, 1. [all data]

Burriel, 1931
Burriel, F., Physico-Chemical Study of Some Solid Organic Compounds at Ordinary Temperatures, and Their COrrelationo with Temperature, An. R. Soc. Esp. Fis. Quim., 1931, 29, 89. [all data]

Marsh, 1987
Marsh, K.N., Recommended Reference Materials for the Realization of Physicochemical Properties, Blackwell Sci. Pub., Oxford, 1987. [all data]

Andon and Connett, 1980
Andon, R.J.L.; Connett, J.E., Calibrants for thermal analysis. measurement of their enthalpies of fusion by adiabatic calorimetry., Thermochim. Acta, 1980, 42, 241. [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, 522-7. [all data]

Furukawa, McCoskey, et al., 1951
Furukawa, G.T.; McCoskey, R.E.; King, G.J., Calorimetric properties of benzoic acid from 0 to 410 K, J. Res. Natl. Bur. Stand. (U. S.), 1951, 47, 256. [all data]

Chickos, Hosseini, et al., 1995
Chickos, James S.; Hosseini, Sarah; Hesse, Donald G., Determination of vaporization enthalpies of simple organic molecules by correlations of changes in gas chromatographic net retention times, Thermochimica Acta, 1995, 249, 41-62, https://doi.org/10.1016/0040-6031(95)90670-3 . [all data]

Torres-Gomez, Barreiro-Rodriguez, et al., 1988
Torres-Gomez, L.A.; Barreiro-Rodriguez, G.; Galarza-Mondragon, A., A new method for the measurement of enthalpies of sublimation using differential scanning calorimetry, Thermochim. Acta, 1988, 124, 229-233. [all data]

Pena, Ribet, et al., 2003
Pena, R.; Ribet, J.P.; Maurel, J.L.; Valat, L.; Lacoulonche, F.; Chauvet, A., Sublimation and vaporisation processes of S(-) efaroxan hydrochloride, Thermochimica Acta, 2003, 408, 1-2, 85-96, https://doi.org/10.1016/S0040-6031(03)00321-6 . [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]

Matsubara and Kuwamoto, 1985
Matsubara, Norio; Kuwamoto, Tooru, Vapor pressure measurements in carrier gas containing ligand vapor using the transpiration technique, Thermochimica Acta, 1985, 83, 2, 193-202, https://doi.org/10.1016/0040-6031(85)87003-9 . [all data]

Cramer, 1943
Cramer, K.S.N., Chem. Zentr. II, 1943, 2234. [all data]

Klosky, Woo, et al., 1927
Klosky, Simon; Woo, Leo P.L.; Flanigan, Robert J., THE VAPOR-PRESSURE CURVE OF BENZOIC ACID, J. Am. Chem. Soc., 1927, 49, 5, 1280-1284, https://doi.org/10.1021/ja01404a017 . [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]

Selvakumar, Raghunathan, et al., 2009
Selvakumar, Jayapragasam; Raghunathan, Vinjamoor Seshadri; Nagaraja, Karachalacheruvu Seetharamaiah, Vapor Pressure Measurements of Sc(tmhd) ₃ and Synthesis of Stabilized Zirconia Thin Films by Hybrid CVD Technique Using Sc(tmhd) ₃ , Zr(tmhd) ₄ , and Al(acac) ₃ [tmhd, 2,2,6,6-tetramethyl-3,5-heptanedione; acac, 2,4-pentanedione] as Precursors, J. Phys. Chem. C, 2009, 113, 44, 19011-19020, https://doi.org/10.1021/jp906204c . [all data]

Ribeiro da Silva, Monte, et al., 2006
Ribeiro da Silva, Manuel A.V.; Monte, Manuel J.S.; Santos, Luís M.N.B.F., The design, construction, and testing of a new Knudsen effusion apparatus, The Journal of Chemical Thermodynamics, 2006, 38, 6, 778-787, https://doi.org/10.1016/j.jct.2005.08.013 . [all data]

Ginkel, Kruif, et al., 2001
Ginkel, C.H.D. van; Kruif, C.G. de; Waal, F.E.B. de, The need for temperature control in effusion experiments (and application to heat of sublimation determination), J. Phys. E: Sci. Instrum., 2001, 8, 6, 490-492, https://doi.org/10.1088/0022-3735/8/6/018 . [all data]

Zielenkiewicz, Perlovich, et al., 1999
Zielenkiewicz, X.; Perlovich, G.L.; Wszelaka-Rylik, M., Journal of Thermal Analysis and Calorimetry, 1999, 57, 1, 225-234, https://doi.org/10.1023/A:1010179814511 . [all data]

Elder, 1997
Elder, J.P., Sublimation measurements of pharmaceutical compounds by isothermal thermogravivletry, Journal of Thermal Analysis, 1997, 49, 2, 897-905, https://doi.org/10.1007/BF01996775 . [all data]

Da Silva and Monte, 1990
Da Silva, Manuel A.V. Ribeiro; Monte, Manuel J.S., The construction, testing and use of a new knudsen effusion apparatus, Thermochimica Acta, 1990, 171, 169-183, https://doi.org/10.1016/0040-6031(90)87017-7 . [all data]

Glukhova, Arkhangelova, et al., 1985
Glukhova, O.T.; Arkhangelova, N.M.; Teplitsky, A.B.; Sukhodub, L.F.; Yanson, I.K.; Kaminski, Miron, The low-temperature quartz resonator method for determination of the enthalpy of sublimation, Thermochimica Acta, 1985, 95, 1, 133-138, https://doi.org/10.1016/0040-6031(85)80041-1 . [all data]

Kaisersberger, Hädrich, et al., 1985
Kaisersberger, E.; Hädrich, W.; Emmerich, W.-D., Measurement of low vapour pressures according to the Knudsen effusion method, Thermochimica Acta, 1985, 95, 2, 331-336, https://doi.org/10.1016/0040-6031(85)85294-1 . [all data]

Colomina, Jimenez, et al., 1982
Colomina, M.; Jimenez, P.; Turrion, C., Vapour pressures and enthalpies of sublimation of naphthalene and benzoic acid, J. Chem. Thermodyn., 1982, 14, 779-784. [all data]

de Kruif and Blok, 1982
de Kruif, C.G.; Blok, J.G., The vapour pressure of benzoic acid, The Journal of Chemical Thermodynamics, 1982, 14, 3, 201-206, https://doi.org/10.1016/0021-9614(82)90011-8 . [all data]

Murata, Sakiyama, et al., 1982
Murata, S.; Sakiyama, M.; Seki, S., Construction and testing of a sublimation calorimetric system using a Calvet microcalorimeter, The Journal of Chemical Thermodynamics, 1982, 14, 8, 707-721, https://doi.org/10.1016/0021-9614(82)90167-7 . [all data]

Sachinidis and Hill, 1980
Sachinidis, J.; Hill, J.O., A re-evaluation of the enthalpy of sublimation of some metal acetylacetonate complexes, Thermochimica Acta, 1980, 35, 1, 59-66, https://doi.org/10.1016/0040-6031(80)85021-0 . [all data]

Nowak, Szczepaniak, et al., 1978
Nowak, M.J.; Szczepaniak, K.; Barski, A.; Shugar, D.Z., Z. Naturforsch. C, 1978, 33C, 876. [all data]

DeKruif, van Ginkel, et al., 1975
DeKruif, C.G.; van Ginkel, C.H.D.; Voogd, J., Torsion-effusion vapour pressure measurements of organic compounds, Conf. Int. Thermodyn. Chim. C. R. 4th, 1975, 8, 11-18. [all data]

Arshadi, 1974
Arshadi, Mohammed R., Determination of heats of sublimation of organic compounds by a mass spectrometric--knudsen effusion method, J. Chem. Soc., Faraday Trans. 1, 1974, 70, 0, 1569, https://doi.org/10.1039/f19747001569 . [all data]

de Kruif and Oonk, 1973
de Kruif, C.G.; Oonk, H.A.J., The determination of enthalpies of sublimation by means of thermal conductivity manometers, Chemie Ing. Techn., 1973, 45, 7, 455-461, https://doi.org/10.1002/cite.330450705 . [all data]

Malaspina, 1973
Malaspina, L., Microcalorimetric determination of the enthalpy of sublimation of benzoic acid and anthracene, J. Chem. Phys., 1973, 59, 1, 387, https://doi.org/10.1063/1.1679817 . [all data]

Colomina, Monzon, et al., 1972
Colomina, M.; Monzon, C.; Turrion, C.; Laynez, J., , Fifth Experimental Thermodynamics Conference, Lancaster, 1972. [all data]

Wiedemann, 1972
Wiedemann, H.G., Applications of thermogravimetry for vapor pressure determination, Thermochim. Acta, 1972, 355-366. [all data]

Ashcroft, 1971
Ashcroft, S.J., The measurement of enthalpies of sublimation by thermogravimetry, Thermochimica Acta, 1971, 2, 6, 512-514, https://doi.org/10.1016/0040-6031(71)80021-7 . [all data]

Melia and Merrifield, 1970
Melia, T.P.; Merrifield, R., Vapour pressures of the tris(acetylacetonato) complexes of scandium(III), vanadium(III) and chromium(III), Journal of Inorganic and Nuclear Chemistry, 1970, 32, 5, 1489-1493, https://doi.org/10.1016/0022-1902(70)80636-4 . [all data]

Wiedemann and Waughna, 1970
Wiedemann, A.G.; Waughna, H.P., , Proceedings of the Third Toronto Symposium on Thermal Analysis, Toronto, 1970, 233. [all data]

Mertl, 1968
Mertl, I., Chem. Listy, 1968, 62, 5, 584. [all data]

Davies and Kybett, 1965
Davies, M.; Kybett, B., Sublimation and vaporization heats of long-chain alcohols, Trans. Faraday Soc., 1965, 61, 1608. [all data]

Wolf and Weghofer, 1938
Wolf, K.L.; Weghofer, H.Z., Z. Phys. Chem. Abt. B, 1938, 39, 194. [all data]

Wolf and Weghofer, 1938, 2
Wolf, K.L.; Weghofer, H., Uber sublimationswarmen, Z. Phys. Chem., 1938, 39, 194-208. [all data]

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

Ginnings and Furukawa, 1953, 2
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]

Furukawa, McCoskey, et al., 1951, 2
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]

Brittain, 2009
Brittain, Harry G., Vibrational Spectroscopic Studies of Cocrystals and Salts. 2. The Benzylamine-Benzoic Acid System, Crystal Growth & Design, 2009, 9, 8, 3497-3503, https://doi.org/10.1021/cg9001972 . [all data]

Sharma, Kant, et al., 2003
Sharma, B.L.; Kant, Rajesh; Sharma, Ritu; Tandon, Sonika, Deviations of binary organic eutectic melt systems, Materials Chemistry and Physics, 2003, 82, 1, 216-224, https://doi.org/10.1016/S0254-0584(03)00199-8 . [all data]

Sharma, Jamwal, et al., 2004
Sharma, B.L.; Jamwal, R.; Kant, R., Thermodynamic and lamella models relationship for the eutectic system benzoic acid-- cinnamic acid, Cryst. Res. Technol., 2004, 39, 5, 454-464, https://doi.org/10.1002/crat.200310210 . [all data]

Roy, Riga, et al., 2002
Roy, S.; Riga, A.T.; Alexander, K.S., Experimental design aids the development of a differential scanning calorimetry standard test procedure for pharmaceuticals, Thermochimica Acta, 2002, 392-393, 399-404, https://doi.org/10.1016/S0040-6031(02)00317-9 . [all data]

Pitzer, Peiper, et al., 1984
Pitzer, Kenneth S.; Peiper, J. Christopher; Busey, R.H., Thermodynamic Properties of Aqueous Sodium Chloride Solutions, J. Phys. Chem. Ref. Data, 1984, 13, 1, 1, https://doi.org/10.1063/1.555709 . [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]

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]

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]

Andon and Connett, 1980, 2
Andon, R.J.L.; Connett, J.E., Calibrants for thermal analysis. Measurement of their enthalpies of fusion by adiabatic calorimetry, Thermochim. Acta, 1980, 42, 241-247. [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]

Klasinc, Kovac, et al., 1983
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]

Tajima, Azami, et al., 1977
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]

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]

Notes

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Symbols used in this document:

AE	Appearance energy
C_p,gas	Constant pressure heat capacity of gas
T_boil	Boiling point
T_fus	Fusion (melting) point
T_triple	Triple point temperature
ΔH_trs	Enthalpy of phase transition
ΔS_trs	Entropy of phase transition
Δ_fusH	Enthalpy of fusion
Δ_fusS	Entropy of fusion
Δ_rG°	Free energy of reaction at standard conditions
Δ_rH°	Enthalpy of reaction at standard conditions
Δ_subH	Enthalpy of sublimation
Δ_subH°	Enthalpy of sublimation at standard conditions
Δ_subS	Entropy of sublimation
Δ_vapH	Enthalpy of vaporization
Δ_vapH°	Enthalpy of vaporization at standard conditions
Δ_vapS	Entropy of vaporization

Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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