2,3-Butanedione
- Formula: C4H6O2
- Molecular weight: 86.0892
- IUPAC Standard InChIKey: QSJXEFYPDANLFS-UHFFFAOYSA-N
- CAS Registry Number: 625-34-3
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
View 3d structure (requires JavaScript / HTML 5) - Species with the same structure:
- Information on this page:
- Other data available:
- Options:
Gas phase thermochemistry data
Go To: Top, Phase change data, UV/Visible spectrum, 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°gas | -78.10 | kcal/mol | Ccb | Nicholson, Szwarc, et al., 1954 |
Phase change data
Go To: Top, Gas phase thermochemistry data, UV/Visible spectrum, 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 |
---|---|---|---|---|---|
ΔvapH° | 9.25 ± 0.22 | kcal/mol | V | Nicholson, Szwarc, et al., 1954 | |
ΔvapH° | 8.6 | kcal/mol | E | Springall and White, 1954 |
UV/Visible spectrum
Go To: Top, Gas phase thermochemistry data, 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.
Spectrum
Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.
Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
View spectrum image in SVG format.
Download spectrum in JCAMP-DX format.
Source | Cohen and Blout, 1953 |
---|---|
Owner | INEP CP RAS, NIST OSRD Collection (C) 2007 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
Origin | INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS |
Source reference | RAS UV No. 10570 |
Instrument | n.i.g. |
Melting point | - 2.4 |
Boiling point | 88 |
References
Go To: Top, Gas phase thermochemistry data, Phase change data, UV/Visible spectrum, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Nicholson, Szwarc, et al., 1954
Nicholson, G.R.; Szwarc, M.; Taylor, J.W.,
The heats of formation of diacetyl and of benzyl methyl ketone in the vapour phase,
J. Chem. Soc., 1954, 2767-2769. [all data]
Springall and White, 1954
Springall, H.D.; White, T.R.,
Heats of combustion and molecular structure. Part II. The mean bond energy term for the carbonyl system in certain ketones,
J. Chem. Soc., 1954, 2765-27. [all data]
Cohen and Blout, 1953
Cohen, S.G.; Blout, E.R.,
J. Polymer Sci., 1953, 3, 264. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Phase change data, UV/Visible spectrum, References
- Symbols used in this document:
ΔfH°gas Enthalpy of formation of gas at standard conditions ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.