Terephthalic acid

• Formula: C₈H₆O₄
• Molecular weight: 166.1308
• IUPAC Standard InChI: InChI=1S/C8H6O4/c9-7(10)5-1-2-6(4-3-5)8(11)12/h1-4H,(H,9,10)(H,11,12) Copy

  
• IUPAC Standard InChIKey: KKEYFWRCBNTPAC-UHFFFAOYSA-N Copy
• CAS Registry Number: 100-21-0
• 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: 1,4-Benzenedicarboxylic acid; p-Benzenedicarboxylic acid; p-Dicarboxybenzene; p-Phthalic acid; WR 16262; Benzene, 1,4-dicarboxylic acid; Acide terephtalique; Benzene, p-dicarboxylic acid; TPA; Kyselina tereftalova; TA 12; Ta-33mp; 1,4-Dicarboxybenzene; NSC 36973; p-Carboxybenzoic acid
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• Information on this page:
  • Condensed phase thermochemistry data
  • Phase change data
  • References
  • Notes
• Other data available:
  • Gas phase ion energetics data
  • Mass spectrum (electron ionization)
  • UV/Visible spectrum
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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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Constant pressure heat capacity of solid

Phase change 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:
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Enthalpy of sublimation

References

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

Karyakin, Rabinovich, et al., 1978
Karyakin, N.V.; Rabinovich, I.B.; Sokolov, L.B., Thermodynamics of the synthesis of isomeric poly(phenylenephthalamides), Vysokomol. Soedin. Ser. B, 1978, 20, 662-666. [all data]

Schwabe and Wagner, 1961
Schwabe, K.; Wagner, W., Verbrennungs- und bildungswarmen der drei isomeren phthalsauren, Z. Electrochem., 1961, 65, 812-815. [all data]

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

Satoh and Sogabe, 1941
Satoh, S.; Sogabe, T., The heat capacities of some organic compounds containing nitrogen and the atomic heat of nitrogen. (4), Sci., Pap. Inst. Phys. Chem. Res. (Tokyo), 1941, 38, 246-251. [all data]

Sabbah and Perez, 1999
Sabbah, Raphaël; Perez, Laurence, Étude thermodynamique des acides phtalique, isophtalique et téréphtalique, Revue canadienne de chimie, 1999, 77, 9, 1508-1513, https://doi.org/10.1139/cjc-77-9-1508 . [all data]

Kozyro, Maksimuk, et al., 2000
Kozyro, A.A.; Maksimuk, Yu.V.; Kabo, G.Ya., Thermodynamics of vaporization of phthalic acids and additivity of enthalpies and entropies of sublimation of benzocarboxylic acids, Zh. Prikl. Khim. (S.-Peterburg), 2000, 73, 2, 199. [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]

Kraus, Beranek, et al., 1962
Kraus, M.; Beranek, L.; Kochloeff, K.; Bazant, V., Chem. Prum., 1962, 12, 649. [all data]

Lucchesi and Lewis, 1968
Lucchesi, Claude A.; Lewis, W.T., Latent heat of sublimation of terephthalic acid from differential thermal analysis data, J. Chem. Eng. Data, 1968, 13, 3, 389-391, https://doi.org/10.1021/je60038a026 . [all data]

Notes

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• Symbols used in this document:
  

  Cp,solid	Constant pressure heat capacity of solid
  ΔcH°solid	Enthalpy of combustion of solid at standard conditions
  ΔfH°solid	Enthalpy of formation of solid at standard conditions
  ΔsubH	Enthalpy of sublimation
  ΔsubH°	Enthalpy of sublimation at standard conditions

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