Methyl glyoxal
- Formula: C3H4O2
- Molecular weight: 72.0627
- IUPAC Standard InChI: InChI=1S/C3H4O2/c1-3(5)2-4/h2H,1H3
- IUPAC Standard InChIKey: AIJULSRZWUXGPQ-UHFFFAOYSA-N
- CAS Registry Number: 78-98-8
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Pyruvaldehyde; Propanal, 2-oxo-; α-Ketopropionaldehyde; Acetylformaldehyde; Acetylformyl; Pyroracemic aldehyde; Pyruvic aldehyde; 2-Ketopropionaldehyde; 2-Oxopropanal; 1,2-Propanedione; CH3COCHO; Glyoxal, methyl; Propanedione; Propanolone; Propionaldehyde, 2-keto; Propionaldehyde, 2-oxo-; 1-Ketopropionaldehyde; NSC 79019; 2-Oxopropionaldehyde; NSC 626580
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Condensed phase thermochemistry data
Go To: Top, Gas Chromatography, 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 | -73.9 ± 1.0 | kcal/mol | Ccb | Moulds and Riley, 1938 | Heat of formation derived by Cox and Pilcher, 1970 |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°liquid | -344.9 ± 1.0 | kcal/mol | Ccb | Moulds and Riley, 1938 | Corresponding ΔfHºliquid = -73.9 kcal/mol (simple calculation by NIST; no Washburn corrections) |
| ΔcH°liquid | -345.7 | kcal/mol | Ccb | Neuberg and Hofmann, 1932 | Corresponding ΔfHºliquid = -73.1 kcal/mol (simple calculation by NIST; no Washburn corrections) |
Gas Chromatography
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 by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Normal alkane RI, polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | EC-1000 | 970. | Bendall, 2001 | 30. m/0.25 mm/0.25 μm, He, 35. C @ 5. min, 5. K/min, 230. C @ 15. min |
Normal alkane RI, polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | EC-1000 | 970. | Delabre and Bendall, 9999 | Program: not specified |
References
Go To: Top, Condensed phase thermochemistry data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Moulds and Riley, 1938
Moulds, L.V.; Riley, H.L.,
The polymerisation of methylglyoxal,
J. Chem. Soc., 1938, 621-626. [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]
Neuberg and Hofmann, 1932
Neuberg, C.; Hofmann, E.,
Uber die Verbrennungswarme des methylglyoxals und damit zusammenhingende fragen,
Biochem. Z., 1932, 262, 440-450. [all data]
Bendall, 2001
Bendall, J.G.,
Aroma compounds of fresh milk from New Zealand cows fed different diets,
J. Agric. Food Chem., 2001, 49, 10, 4825-4832, https://doi.org/10.1021/jf010334n
. [all data]
Delabre and Bendall, 9999
Delabre, M.-L.; Bendall, J.F.,
Flavour ingredients from fermented dairy streams,
Expression of Multidisciplinary Flavour Sci., 9999, 375-378. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Gas Chromatography, References
- Symbols used in this document:
ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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