3,5-Heptanedione
- Formula: C7H12O2
- Molecular weight: 128.1690
- IUPAC Standard InChI: InChI=1S/C7H12O2/c1-3-6(8)5-7(9)4-2/h3-5H2,1-2H3
- IUPAC Standard InChIKey: DGCTVLNZTFDPDJ-UHFFFAOYSA-N
- CAS Registry Number: 7424-54-6
- 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: Dipropionylmethane; heptane-3,5-dione
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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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -438.9 | kJ/mol | Ion | Conrath, Van de Sande, et al., 1974 | Mass spectrometery (enol) |
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 by: Robert L. Brown and Stephen E. Stein
Reduced pressure boiling point
| Tboil (K) | Pressure (bar) | Reference |
|---|---|---|
| 445.7 | 0.948 | Weast and Grasselli, 1989 |
| 352.2 | 0.040 | Weast and Grasselli, 1989 |
Gas Chromatography
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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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Kovats' RI, non-polar column, isothermal
| Column type | Active phase | Temperature (C) | I | Reference | Comment |
|---|---|---|---|---|---|
| Packed | SE-30 | 150. | 977. | Haken, Ho, et al., 1975 | Column length: 3.7 m |
Normal alkane RI, non-polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | Squalane | 977. | Chen, 2008 | Program: not specified |
References
Go To: Top, Gas phase thermochemistry data, Phase change data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Conrath, Van de Sande, et al., 1974
Conrath, k.; Van de Sande, C.; Vandewalle, M.,
Studies in organic mass spectrometry. XVI. A combined approach to the structures of ions generated from the molecular ions of acyclic β-diketones through loss of small neutral molecules,
Org. Mass Spectrom., 1974, 9, 585-593. [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]
Haken, Ho, et al., 1975
Haken, J.K.; Ho, D.K.M.; Vaughan, C.E.,
Gas chromatography of homologous esters. VII. The retention behaviour of pyruvate esters and related carbonyl and carboxyl compounds,
J. Chromatogr., 1975, 106, 2, 317-325, https://doi.org/10.1016/S0021-9673(00)93839-1
. [all data]
Chen, 2008
Chen, H.-F.,
Quantitative prediction of gas chromatography retention indices with support vector machines, radial basis neutral networks and multiple linear regression,
Anal. Chim. Acta, 2008, 609, 1, 24-36, https://doi.org/10.1016/j.aca.2008.01.003
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Phase change data, Gas Chromatography, References
- Symbols used in this document:
Tboil Boiling point ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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