Tetramethyl orthocarbonate
- Formula: C5H12O4
- Molecular weight: 136.1464
- IUPAC Standard InChIKey: AHJWSRRHTXRLAQ-UHFFFAOYSA-N
- CAS Registry Number: 1850-14-2
- 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: Tetramethoxymethane; Methane, tetramethoxy-
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction 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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -173.80 ± 0.36 | kcal/mol | Cm | Wiberg and Squires, 1979 | Hydrolysis |
ΔfH°gas | -173.9 | kcal/mol | Cm | Hine and Klueppet, 1974 |
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 |
---|---|---|---|---|---|
ΔfH°liquid | -183.34 ± 0.31 | kcal/mol | Cm | Wiberg and Squires, 1979 | Hydrolysis |
ΔfH°liquid | -183.4 | kcal/mol | Cm | Hine and Klueppet, 1974 |
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:
BS - Robert L. Brown and Stephen E. Stein
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 |
---|---|---|---|---|---|
Tboil | 387.2 | K | N/A | Weast and Grasselli, 1989 | BS |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 9.56 ± 0.18 | kcal/mol | E | Wiberg and Squires, 1979 | Hydrolysis; ALS |
ΔvapH° | 9.54 | kcal/mol | N/A | Wiberg and Squires, 1979 | DRB |
ΔvapH° | 9.56 | kcal/mol | V | Hine and Klueppet, 1974 | ALS |
ΔvapH° | 9.49 | kcal/mol | N/A | Hine and Klueppet, 1974 | DRB |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
9.85 | 319. | Thomas, Smith, et al., 2007 | Based on data from 304. to 387. K.; AC |
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
By formula: C5H12O4 + H2O = C3H6O3 + 2CH4O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 7.521 ± 0.011 | kcal/mol | Cm | Wiberg, 1980 | liquid phase; solvent: Water; Hydroysis |
ΔrH° | -7.521 ± 0.011 | kcal/mol | Cm | Wiberg and Squires, 1979 | liquid phase; solvent: Water; Hydrolysis |
ΔrH° | -7.43 ± 0.41 | kcal/mol | Cm | Hine and Klueppet, 1974 | liquid phase |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Wiberg and Squires, 1979
Wiberg, K.B.; Squires, R.R.,
A microprocessor-controlled system for precise measurement of temperature changes. Determination of the enthalpies of hydrolysis of some polyoxygenated hydrocarbons,
J. Chem. Thermodyn., 1979, 11, 773-786. [all data]
Hine and Klueppet, 1974
Hine, J.; Klueppet, A.W.,
Structural effects on rates and equilibria. XVIII. Thermodynamic stability of ortho esters,
J. Am. Chem. Soc., 1974, 96, 2924-2929. [all data]
Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]
Thomas, Smith, et al., 2007
Thomas, Leo H.; Smith, Harry; Davies, Gwyn H.,
Vapour pressures, molar entropies of vaporisation and liquid-state conformation of alkoxides,
J. Chem. Technol. Biotechnol., 2007, 30, 1, 476-480, https://doi.org/10.1002/jctb.503300160
. [all data]
Wiberg, 1980
Wiberg, K.B.,
Energies of organic compounds,
Rept. DOE-E(11-1)4060 Prepared for US Dept. of Energy by Yale Univ., New Haven, CT. Avail. NTIS, 1980, 1-24. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, References
- Symbols used in this document:
Tboil Boiling point ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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