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
- IUPAC Standard InChIKey: LOMVENUNSWAXEN-UHFFFAOYSA-N
- 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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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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -709.27 ± 0.54 | kJ/mol | Ccb | Anthoney, Carson, et al., 1976 | See Anthoney, Carson, et al., 1975; ALS |
| ΔfH°gas | -709.7 | kJ/mol | N/A | Anthoney, Finch, et al., 1975 | Value computed using ΔfHsolid° value of -756.7±0.3 kj/mol from Anthoney, Finch, et al., 1975 and ΔsubH° value of 47.0 kj/mol from Anthoney, Carson, et al., 1976.; DRB |
Reaction thermochemistry data
Go To: Top, Gas 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 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
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 17.428 ± 0.065 | kJ/mol | Cm | Anthoney, Finch, et al., 1975 | solid phase; solvent: Water; Hydrolysis |
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, Carson, et al., 1976
Anthoney, M.E.; Carson, A.S.; Laye, P.G.; Yrekli, M.,
The enthalpy of formation of dimethyl oxalate,
J. Chem. Thermodyn., 1976, 8, 1009-1010. [all data]
Anthoney, Carson, et al., 1975
Anthoney, M.E.; Carson, A.S.; Laye, P.G.,
The thermochemistry of formates and oxalates,
Conf. Int. Thermodyn. Chim. C.R. 4th, 1975, 1, 99-103. [all data]
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]
Notes
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, References
- Symbols used in this document:
ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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