Methyl isovalerate
- Formula: C6H12O2
- Molecular weight: 116.1583
- IUPAC Standard InChI: InChI=1S/C6H12O2/c1-5(2)4-6(7)8-3/h5H,4H2,1-3H3
- IUPAC Standard InChIKey: OQAGVSWESNCJJT-UHFFFAOYSA-N
- CAS Registry Number: 556-24-1
- 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: Butanoic acid, 3-methyl-, methyl ester; Isovaleric acid, methyl ester; Methyl isopentanoate; Methyl 3-methylbutanoate; Methyl 3-methylbutyrate; 3-Methylbutanoic acid methyl ester; UN 2400
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Condensed phase thermochemistry data
Go To: Top, Phase change 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°liquid | -538.9 ± 7.1 | kJ/mol | Ccb | Hancock, Watson, et al., 1954 | Reanalyzed by Cox and Pilcher, 1970, Original value = -540. kJ/mol |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°liquid | -3537.2 ± 7.1 | kJ/mol | Ccb | Hancock, Watson, et al., 1954 | Reanalyzed by Cox and Pilcher, 1970, Original value = -3540. kJ/mol; Corresponding ΔfHºliquid = -538.90 kJ/mol (simple calculation by NIST; no Washburn corrections) |
Phase change data
Go To: Top, Condensed 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 as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
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 | 390. ± 1. | K | AVG | N/A | Average of 6 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔvapH° | 41. ± 1. | kJ/mol | E | Hancock, Watson, et al., 1954 | Heat of formation derived by Cox and Pilcher, 1970; ALS |
| ΔvapH° | 41.0 | kJ/mol | N/A | Hancock, Watson, et al., 1954 | DRB |
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 41.2 | 269. | A | Stephenson and Malanowski, 1987 | Based on data from 254. to 390. K. See also Stull, 1947.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
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| Temperature (K) | A | B | C | Reference | Comment |
|---|---|---|---|---|---|
| 254.0 to 389.8 | 4.52819 | 1582.466 | -40.123 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Hancock, Watson, et al., 1954
Hancock, C.K.; Watson, G.M.; Gilby, R.F.,
Heats of combustion of five-carbon fatty acids and their methyl and ethyl esters,
J. Phys. Chem., 1954, 58, 127-129. [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]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Stull, 1947
Stull, Daniel R.,
Vapor Pressure of Pure Substances. Organic and Inorganic Compounds,
Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022
. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Tboil Boiling point ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°liquid Enthalpy of formation of liquid 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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