Benzoic acid, 4-methoxy-

• Formula: C₈H₈O₃
• Molecular weight: 152.1473
• IUPAC Standard InChI: InChI=1S/C8H8O3/c1-11-7-4-2-6(3-5-7)8(9)10/h2-5H,1H3,(H,9,10) Copy

  
• IUPAC Standard InChIKey: ZEYHEAKUIGZSGI-UHFFFAOYSA-N Copy
• CAS Registry Number: 100-09-4
• 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: p-Anisic acid; p-Methoxybenzoic acid; Draconic acid; 4-Anisic acid; 4-Methoxybenzoic acid; Anisic acid, para; Kyselina 4-methoxybenzoova
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• Information on this page:
  • Condensed phase thermochemistry data
  • Phase change data
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Mass spectrum (electron ionization)
  • UV/Visible spectrum
  • Gas Chromatography
• Data at other public NIST sites:
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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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Enthalpy of sublimation

Enthalpy 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.

Colomina, Jimenez, et al., 1978
Colomina, M.; Jimenez, P.; Roux, M.V.; Turrion, C., Thermochemical properties of benzoic acid derivatives VII. Enthalpies of combustion and formation of the o-, m-, and p-methoxy-benzoic acids, J. Chem. Thermodyn., 1978, 10, 661-665. [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. (3), Sci., Pap. Inst. Phys. Chem. Res. (Tokyo), 1941, 38, 238-245. [all data]

Anonymous, 1988
Anonymous, X., , NBS Spec. Publ. (U. S.) 260, 1988. [all data]

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

Armstrong, James, et al., 1979
Armstrong, N.A.; James, K.C.; Wong, C.K., Inter-relationships between solubilities, distribution coefficients and melting points of some substituted benzoic and phenylacetic acids, J. Pharm. Pharmacol., 1979, 31, 1, 627, https://doi.org/10.1111/j.2042-7158.1979.tb13606.x . [all data]

Herbert, 1967
Herbert, A.J., Transition temperatures and transition energies of the p-n-alkoxy benzoic acids, from n-propyl to n-octadecyl, Trans. Faraday Soc., 1967, 63, 555, https://doi.org/10.1039/tf9676300555 . [all data]

Perlovich, Volkova, et al., 2008
Perlovich, German L.; Volkova, Tatyana V.; Manin, Alex N.; Bauer-Brandl, Annette, Extent and mechanism of solvation and partitioning of isomers of substituted benzoic acids: A thermodynamic study in the solid state and in solution, J. Pharm. Sci., 2008, 97, 9, 3883-3896, https://doi.org/10.1002/jps.21260 . [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]

Sabbah and El Watik, 1992
Sabbah, R.; El Watik, L., New reference materials for the calibration (temperature and energy) of differential thermal analysers and scanning calorimeters, J. Therm. Anal., 1992, 38(4), 855-863. [all data]

Acree, 1991
Acree, William E., Thermodynamic properties of organic compounds: enthalpy of fusion and melting point temperature compilation, Thermochimica Acta, 1991, 189, 1, 37-56, https://doi.org/10.1016/0040-6031(91)87098-H . [all data]

Notes

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• Symbols used in this document:
  

  Cp,solid	Constant pressure heat capacity of solid
  Tfus	Fusion (melting) point
  ΔcH°solid	Enthalpy of combustion of solid at standard conditions
  ΔfH°solid	Enthalpy of formation of solid at standard conditions
  ΔfusH	Enthalpy of fusion
  ΔsubH	Enthalpy of sublimation
  ΔsubH°	Enthalpy of sublimation at standard conditions
  ΔvapH°	Enthalpy of vaporization at standard conditions

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