Propane, 2,2-dimethoxy-
- Formula: C5H12O2
- Molecular weight: 104.1476
- IUPAC Standard InChI: InChI=1S/C5H12O2/c1-5(2,6-3)7-4/h1-4H3
- IUPAC Standard InChIKey: HEWZVZIVELJPQZ-UHFFFAOYSA-N
- CAS Registry Number: 77-76-9
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Acetone, dimethyl acetal; Acetone dimethyl ketal; 2,2-Dimethoxypropane
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Reaction thermochemistry data
Go To: Top, Mass spectrum (electron ionization), 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
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Individual Reactions
+
= 2
+
By formula: H2O + C5H12O2 = 2CH4O + C3H6O
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 4.86 ± 0.01 | kcal/mol | Cm | Wiberg, Morgan, et al., 1994 | liquid phase |
| ΔrH° | 4.88 ± 0.01 | kcal/mol | Cm | Wiberg and Squires, 1979 | liquid phase; Heat of hydrolysis |
| ΔrH° | 4.8836 ± 0.0067 | kcal/mol | Cm | Wiberg and Squires, 1979, 2 | liquid phase; solvent: Water; Hydrolysis |
| ΔrH° | -3.95 ± 0.05 | kcal/mol | Cm | Stern and Dorer, 1962 | liquid phase; Reanalyzed by Cox and Pilcher, 1970, Original value = 3.69 ± 0.05 kcal/mol; Heat of hydrolysis |
2 +
=
+
By formula: 2CH4O + C3H6O = H2O + C5H12O2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -11.1 ± 0.3 | kcal/mol | Cm | Wiberg, Morgan, et al., 1994 | gas phase |
Mass spectrum (electron ionization)
Go To: Top, 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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Due to licensing restrictions, this spectrum cannot be downloaded.
| 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. |
|---|---|
| NIST MS number | 20002 |
References
Go To: Top, Reaction thermochemistry data, Mass spectrum (electron ionization), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Wiberg, Morgan, et al., 1994
Wiberg, K.B.; Morgan, K.M.; Maltz, H.,
Thermochemistry of carbonyl reactions. 6. A study of hydration equilibria,
J. Am. Chem. Soc., 1994, 116, 11067-11077. [all data]
Wiberg and Squires, 1979
Wiberg, K.B.; Squires, R.R.,
Thermodynamics of hydrolysis aliphatic ketals. An entropy component of steric effects,
J. Am. Chem. Soc., 1979, 101, 5512-5515. [all data]
Wiberg and Squires, 1979, 2
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]
Stern and Dorer, 1962
Stern, J.H.; Dorer, F.H.,
Standard heats of formation of 2,2-Dimethoxypropane (1), and 2,2 -Diethoxypropane (1). Group additivity theory and calculated heats of formation and five ketals,
J. Phys. Chem., 1962, 66, 97-99. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Mass spectrum (electron ionization), References
- 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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