Trimellitic acid anhydride

• Formula: C₉H₄O₅
• Molecular weight: 192.1251
• IUPAC Standard InChI: InChI=1S/C9H4O5/c10-7(11)4-1-2-5-6(3-4)9(13)14-8(5)12/h1-3H,(H,10,11) Copy

  
• IUPAC Standard InChIKey: SRPWOOOHEPICQU-UHFFFAOYSA-N Copy
• CAS Registry Number: 552-30-7
• Chemical structure:
  This structure is also available as a 2d Mol file
• Other names: 5-Isobenzofurancarboxylic acid, 1,3-dihydro-1,3-dioxo-; 1,2,4-Benzenetricarboxylic acid, cyclic 1,2-anhydride; Anhydrotrimellitic acid; Trimellitic acid 1,2-anhydride; Trimellitic acid cyclic 1,2-anhydride; 1,2,4-Benzenetricarboxylic acid anhydride; 1,2,4-Benzenetricarboxylic anhydride; 1,3-Dioxo-5-phthalancarboxylic acid; 4-Carboxyphthalic anhydride; Trimellitic anhydride; Trimellic acid anhydride; Trimellic acid-1,2-anhydride; 1,3-Dihydro-1,3-dioxo-5-isobenzofurancarboxylic acid; 1,2,4-Benzenetricarboxylic acid anhydride-1,2; 1,2,4-Benzenetricarboxylic acid 1,2-anhydride; Benzene-1,2,4-tricarboxylic-1,2-anhydride; Anhydrotrimellic acid; NCI-C56633; TMA; TMAN; 5-Phthalanacarboxylic acid, 1,3-dioxo-; Epon 9150; NSC 60252; benzene-1,2,4-tricarboxylic acid 1,2-anhydride
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• Information on this page:
  • Phase change data
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • Mass spectrum (electron ionization)
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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:
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

Enthalpy of vaporization

Enthalpy of fusion

Entropy of fusion

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.

Marchidan and Ciopec, 1978
Marchidan, D.I.; Ciopec, M., Thermodynamic properties of maleic, trimellitic and pryomellitic anhydrides, Rev. Roum. Chim., 1978, 23, 1, 19-20. [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]

Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D., Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III, J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985 . [all data]

Marchidan and Ciopec, 1978, 2
Marchidan, D.I.; Ciopec, M., Thermodynamic properties of maleic, trimellitic and pyromellitic anhydrides, Rev. Roum. Chim., 1978, 23, 19-29. [all data]

Notes

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• Symbols used in this document:
  

  Tfus	Fusion (melting) point
  ΔfusH	Enthalpy of fusion
  ΔfusS	Entropy of fusion
  ΔvapH	Enthalpy of vaporization

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