Ethanedioic acid, dimethyl ester

• Formula: C₄H₆O₄
• Molecular weight: 118.0880
• IUPAC Standard InChI: InChI=1S/C4H6O4/c1-7-3(5)4(6)8-2/h1-2H3 Copy

  
• IUPAC Standard InChIKey: LOMVENUNSWAXEN-UHFFFAOYSA-N Copy
• CAS Registry Number: 553-90-2
• Chemical structure:
  This structure is also available as a 2d Mol file
• Other names: Oxalic acid, dimethyl ester; Dimethyl oxalate; Methyl oxalate; CH3OCOCOOCH3; Dimethyl ester of oxalic acid; Ethanedioc acid dimethyl ester
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• Information on this page:
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Gas Chromatography
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Phase change data
  • Mass spectrum (electron ionization)
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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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

 + 2 =  + 2

By formula: C₄H₆O₄ + 2H₂O = C₂H₂O₄ + 2CH₄O

Gas phase ion energetics 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: Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Ionization energy determinations

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

Kovats' RI, non-polar column, isothermal

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Kovats' RI, polar column, isothermal

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Van Den Dool and Kratz RI, non-polar column, temperature ramp

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Van Den Dool and Kratz RI, non-polar column, custom temperature program

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Van Den Dool and Kratz RI, polar column, temperature ramp

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Normal alkane RI, non-polar column, temperature ramp

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Normal alkane RI, polar column, temperature ramp

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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.

Anthoney, Finch, et al., 1975
Anthoney, M.E.; Finch, A.; Stephens, M., The solution of dimethyl oxalate and oxalic acid in water and alkali. Standard enthalpy of formation of dimethyl oxalate, Thermochim. Acta, 1975, 12, 427-431. [all data]

McGlynn and Meeks, 1976
McGlynn, S.P.; Meeks, J.L., Photoelectron spectra of carbonyls, carbonates, oxalates and esterification effects, J. Electron Spectrosc. Relat. Phenom., 1976, 8, 85. [all data]

Grigor'eva, Vasil'ev, et al., 1993
Grigor'eva, D.N.; Vasil'ev, A.V.; Golovnya, R.V., Effect of the temperature on the retention indices in homologous series of bifunctional compounds under capillary gas chromatography conditions, J. Anal. Chem. USSR (Engl. Transl.), 1993, 48, 7, 817-822. [all data]

Wu, Zorn, et al., 2007
Wu, S.; Zorn, H.; Krings, U.; Berger, R.G., Volatiles from submerged and surface-cultured beefsteak fungus, Fistulina hepatica, Flavour Fragr. J., 2007, 22, 1, 53-60, https://doi.org/10.1002/ffj.1758 . [all data]

van den Dool and Kratz, 1963
van den Dool, H.; Kratz, P. Dec., A generalization of the retention index system including linear temperature programmed gas-liquid partition chromatography, J. Chromatogr., 1963, 11, 463-471, https://doi.org/10.1016/S0021-9673(01)80947-X . [all data]

Peng, Ding, et al., 1988
Peng, C.T.; Ding, S.F.; Hua, R.L.; Yang, Z.C., Prediction of Retention Indexes I. Structure-Retention Index Relationship on Apolar Columns, J. Chromatogr., 1988, 436, 137-172, https://doi.org/10.1016/S0021-9673(00)94575-8 . [all data]

Wu, Krings, et al., 2005
Wu, S.; Krings, U.; Zorn, H.; Berger, R.G., Volatile compounds from the fruiting bodies of beefsteak fungus Fistulina hepatica (Schaeffer: Fr.) Fr., Food Chem., 2005, 92, 2, 221-226, https://doi.org/10.1016/j.foodchem.2004.07.013 . [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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