Butanal, 2-methyl-
- Formula: C5H10O
- Molecular weight: 86.1323
- IUPAC Standard InChI: InChI=1S/C5H10O/c1-3-5(2)4-6/h4-5H,3H2,1-2H3
- IUPAC Standard InChIKey: BYGQBDHUGHBGMD-UHFFFAOYSA-N
- CAS Registry Number: 96-17-3
- 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. - Species with the same structure:
- Stereoisomers:
- Other names: Butyraldehyde, 2-methyl-; α-Methylbutanal; α-Methylbutyraldehyde; α-Methylbutyric aldehyde; Methylethylacetaldehyde; 2-Formylbutane; 2-Methylbutanal; 2-Methylbutyraldehyde; 2-Methylbutyric aldehyde; sec-C4H9CHO; Acetaldehyde, ethylmethyl-; 2-Methyl-1-butanal; (.+/-.)-2-Methylbutanal; 2-Ethylpropanal; NSC 77077
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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
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 365. ± 2. | K | AVG | N/A | Average of 14 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| Tfus | 167.7 | K | N/A | Anonymous, 1957 | Uncertainty assigned by TRC = 0.7 K; TRC |
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
+
By formula: C7H16O2 + H2O = 2CH4O + C5H10O
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 34.03 ± 0.14 | kJ/mol | Eqk | Wiberg and Squires, 1981 | liquid phase |
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
View reactions leading to C5H10O+ (ion structure unspecified)
Ionization energy determinations
| IE (eV) | Method | Reference |
|---|---|---|
| 9.59 ± 0.01 | PE | Hernandez, Masclet, et al., 1977 |
References
Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Anonymous, 1957
Anonymous, R.,
, Am. Pet. Inst. Res. Proj. 6, Carnegie-Mellon Univ., 1957. [all data]
Wiberg and Squires, 1981
Wiberg, K.B.; Squires, R.R.,
Thermochemical studies of carbonyl reactions. 2. Steric effects in acetal and ketal hydrolysis,
J. Am. Chem. Soc., 1981, 103, 4473-4478. [all data]
Hernandez, Masclet, et al., 1977
Hernandez, R.; Masclet, P.; Mouvier, G.,
Spectroscopie de photoelectrons d'aldehydes et de cetones aliphatiques,
J. Electron Spectrosc. Relat. Phenom., 1977, 10, 333. [all data]
Notes
Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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