2-Butenoic acid, 2-methyl-, (Z)-
- Formula: C5H8O2
- Molecular weight: 100.1158
- IUPAC Standard InChI: InChI=1S/C5H8O2/c1-3-4(2)5(6)7/h3H,1-2H3,(H,6,7)/b4-3-
- IUPAC Standard InChIKey: UIERETOOQGIECD-ARJAWSKDSA-N
- CAS Registry Number: 565-63-9
- Chemical structure:
This structure is also available as a 2d Mol file - Stereoisomers:
- Other names: cis-2-Methyl-2-butenoic acid; Angelic acid; Crotonic acid, 2-methyl-, (Z)-; 2-Methyl-2-butenoic acid, cis; (Z)-2-Methyl-2-butenoic acid; (Z) CH3CH=C(CH3)COOH; (2Z)-2-Methyl-2-butenoic acid; 2-methylisocrotonic acid
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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
AC - William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 458.2 | K | N/A | Weast and Grasselli, 1989 | BS |
| Quantity | Value | Units | Method | Reference | Comment |
| Tc | 661.14 | K | N/A | D'Souza and Teja, 1987 | Uncertainty assigned by TRC = 3. K; Ambrose's procedure; TRC |
| Quantity | Value | Units | Method | Reference | Comment |
| Pc | 44.3293 | atm | N/A | D'Souza and Teja, 1987 | Uncertainty assigned by TRC = 0.987 atm; Ambrose's procedure; TRC |
Reduced pressure boiling point
| Tboil (K) | Pressure (atm) | Reference | Comment |
|---|---|---|---|
| 361.7 | 0.013 | Weast and Grasselli, 1989 | BS |
Enthalpy of vaporization
| ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 14.8 | 376. | A | Stephenson and Malanowski, 1987 | Based on data from 361. to 458. K.; AC |
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.
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]
D'Souza and Teja, 1987
D'Souza, R.; Teja, A.S.,
The prediction of the vapor pressures of carboxylic acids,
Chem. Eng. Commun., 1987, 61, 13. [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]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Pc Critical pressure Tboil Boiling point Tc Critical temperature ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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