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
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Condensed phase thermochemistry data
  • Phase change data
  • References
  • Notes
• Other data available:
  • Mass spectrum (electron ionization)
• Options:
  • Switch to SI units

Data at NIST subscription sites:

• NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.

Condensed phase thermochemistry data

Go To: Top, Phase change data, References, Notes

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

Data compiled by: Eugene S. Domalski and Elizabeth D. Hearing

Constant pressure heat capacity of solid

Phase change data

Go To: Top, Condensed phase thermochemistry data, References, Notes

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

Go To: Top, Condensed phase thermochemistry data, Phase change data, Notes

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 pyromellitic anhydrides, Rev. Roum. Chim., 1978, 23, 19-29. [all data]

Marchidan and Ciopec, 1978, 2
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]

Notes

Go To: Top, Condensed phase thermochemistry data, Phase change data, References

• Symbols used in this document:
  

  Cp,solid	Constant pressure heat capacity of solid
  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
• The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
• Customer support for NIST Standard Reference Data products.