2,5-Dimethoxybenzoic acid


Gas 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Δfgas-138.3 ± 0.53kcal/molCcbJimenex, Roux, et al., 1996 

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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Δfsolid-166.0 ± 0.50kcal/molCcbJimenex, Roux, et al., 1996 
Quantity Value Units Method Reference Comment
Δcsolid-1022.0 ± 0.41kcal/molCcbJimenex, Roux, et al., 1996Corresponding Δfsolid = -166.0 kcal/mol (simple calculation by NIST; no Washburn corrections)

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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Δsub27.7 ± 0.2kcal/molVJimenex, Roux, et al., 1996ALS
Δsub27.75kcal/molN/AJimenex, Roux, et al., 1996DRB
Δsub27.7 ± 0.2kcal/molMEJimenex, Roux, et al., 1996Based on data from 324. - 342. K.; AC

Enthalpy of sublimation

ΔsubH (kcal/mol) Temperature (K) Method Reference Comment
27.1 ± 0.2333.MEJimenex, Roux, et al., 1996Based on data from 324. - 342. K.; AC

IR Spectrum

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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

Gas Phase Spectrum

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IR spectrum
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Additional Data

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Owner NIST Standard Reference Data Program
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin NIST Mass Spectrometry Data Center
State gas
Instrument HP-GC/MS/IRD

This IR spectrum is from the NIST/EPA Gas-Phase Infrared Database .


Mass spectrum (electron ionization)

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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

Spectrum

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Mass spectrum
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Additional Data

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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin NIST Mass Spectrometry Data Center, 1990.
NIST MS number 118938

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.


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, isothermal

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Column type Active phase Temperature (C) I Reference Comment
PackedApieson L140.1431.Hedin, Minyard, et al., 1967Nitrogen, Chromosorb W HMDS (60-80 mesh); Column length: 1.8 m

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, Notes

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

Jimenex, Roux, et al., 1996
Jimenex, P.; Roux, M.V.; Kulhanek, J.; Exner, O., Enthalpies of formation of methoxybenzoic acids and their dependence on structure, Struct. Chem., 1996, 7, 375-381. [all data]

Hedin, Minyard, et al., 1967
Hedin, P.A.; Minyard, J.P.; Thompson, A.C., Chromatographic and spectral analysis of phenolic acids and related compounds, J. Chromatogr., 1967, 30, 43-53, https://doi.org/10.1016/S0021-9673(00)84111-4 . [all data]


Notes

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