1,2-Benzenedicarboxylic acid
- Formula: C8H6O4
- Molecular weight: 166.1308
- IUPAC Standard InChI: InChI=1S/C8H6O4/c9-7(10)5-3-1-2-4-6(5)8(11)12/h1-4H,(H,9,10)(H,11,12)
- IUPAC Standard InChIKey: XNGIFLGASWRNHJ-UHFFFAOYSA-N
- CAS Registry Number: 88-99-3
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Phthalic acid; o-Benzenedicarboxylic acid; o-Dicarboxybenzene; Benzene-1,2-dicarboxylic acid; o-Phthalic acid; Acide phtalique; Kyselina ftalova; Sunftal 20; Orthophthalic acid
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Reaction 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
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By formula: C8H6O4 = H2O + C8H4O3
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 31.93 ± 0.29 | kJ/mol | Cm | Alekseev, Kizaev, et al., 1989 | solid phase; solvent: Aqueous; Enthapy of anhydridisation |
IR Spectrum
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Data compiled by: Coblentz Society, Inc.
- Not specified, most likely a prism, grating, or hybrid spectrometer.; (NO SPECTRUM, ONLY SCANNED IMAGE IS AVAILABLE)
- SOLID (MINERAL OIL MULL); Not specified, most likely a prism, grating, or hybrid spectrometer.; DIGITIZED BY NIST FROM HARD COPY; 4 cm-1 resolution
Gas Chromatography
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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 by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Normal alkane RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | SPB-1 | 1643. | Escalona-Arranz, Perez-Roses, et al., 2010 | 30. m/0.32 mm/0.25 μm, Helium, 30. C @ 3. min, 4. K/min, 250. C @ 10. min |
Lee's RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | HP-5 | 225.33 | Pedersen, Durant, et al., 2005 | 30. m/0.25 mm/0.25 μm, Helium, 50. C @ 1.5 min, 6. K/min, 310. C @ 10. min |
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.
Alekseev, Kizaev, et al., 1989
Alekseev, V.G.; Kizaev, V.D.; Fedyainov, N.V.; Bushinskii, V.I.,
Standard enthalpies of anhydridisation of phthalic and pyromellitic acids,
Russ. J. Phys. Chem. (Engl. Transl.), 1989, 63, 1280-1282. [all data]
Escalona-Arranz, Perez-Roses, et al., 2010
Escalona-Arranz, J.C.; Perez-Roses, R.; Jimenez, I.L.; Rodriguez-Amado, J.; Argota-Coello, H.; Canizares-Lay, J.; Morris-Quevedo, H.J.; Sierra-Gonzales, G.,
Chemical constituents of Tamarindus indica L. leaves,
Rev. Cubana Quim., 2010, 22, 3, 65-71. [all data]
Pedersen, Durant, et al., 2005
Pedersen, D.U.; Durant, J.L.; Taghizadeh, K.; Hemond, H.F.; Lafleur, A.L.; Cass, G.R.,
Human cell mutagenes in respirable airborne particles from the Northeastern United States. 2. Quantification of mutagenes and other organic compounds.,
Environ. Sci. Technol., 2005, 39, 24, 9547-9560, https://doi.org/10.1021/es050886c
. [all data]
Notes
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- Symbols used in this document:
ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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