Ketene
- Formula: C2H2O
- Molecular weight: 42.0367
- IUPAC Standard InChI: InChI=1S/C2H2O/c1-2-3/h1H2
- IUPAC Standard InChIKey: CCGKOQOJPYTBIH-UHFFFAOYSA-N
- CAS Registry Number: 463-51-4
- 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: Ethenone; Carbomethene; CH2CO; Keto-ethylene
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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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔvapH° | 20.4 ± 5.9 | kJ/mol | V | Reuben, 1969 | ALS |
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 20.4 ± 0.1 | 209. | A,MM | Stephenson and Malanowski, 1987 | Based on data from 159. to 224. K. See also Reuben, 1969, 2.; 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 |
|---|---|---|---|---|---|
| 159.3 to 223.80 | 3.97722 | 766.685 | -30.609 | Reuben, 1969, 2 | Coefficents calculated by NIST from author's data. |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Reuben, 1969
Reuben, B.G.,
Vapor pressure of ketene,
J. Chem. Eng. Data, 1969, 14, 235. [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]
Reuben, 1969, 2
Reuben, Bryan G.,
Vapor pressure of ketene,
J. Chem. Eng. Data, 1969, 14, 2, 235-236, https://doi.org/10.1021/je60041a008
. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
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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