2-Ethylbenzoic acid
- Formula: C9H10O2
- Molecular weight: 150.1745
- IUPAC Standard InChIKey: CGMMPMYKMDITEA-UHFFFAOYSA-N
- CAS Registry Number: 612-19-1
- 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. - Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Options:
Data at NIST subscription sites:
NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.
Condensed phase thermochemistry data
Go To: Top, 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.
Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°solid | -441.4 ± 1.5 | kJ/mol | Ccb | Colomina, Jimenez, et al., 1976 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -4529.4 ± 3.7 | kJ/mol | Ccb | Colomina, Jimenez, et al., 1976 | Corresponding ΔfHºsolid = -441.37 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
Constant pressure heat capacity of solid
Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
208.7 | 298.15 | Colomina, Jimenez, et al., 1984 | Cp given as 1.39 J/g*K.; DH |
Phase change data
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 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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 532.2 | K | N/A | Weast and Grasselli, 1989 | BS |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 338. | K | N/A | Crawford and Stewart, 1952 | Uncertainty assigned by TRC = 3. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 101.1 ± 0.4 | kJ/mol | ME | Colomina, Jimenez, et al., 1984, 2 | AC |
ΔsubH° | 100.7 ± 0.4 | kJ/mol | V | Colomina, Jimenez, et al., 1976 | ALS |
ΔsubH° | 100.7 | kJ/mol | N/A | Colomina, Jimenez, et al., 1976 | DRB |
ΔsubH° | 100.7 ± 2.5 | kJ/mol | ME | Colomina, Jimenez, et al., 1976 | Based on data from 298. to 313. K.; AC |
Enthalpy of sublimation
ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
100.5 | 305.5 | ME | Stephenson and Malanowski, 1987 | Based on data from 298. to 313. K. See also Colomina, Jimenez, et al., 1976.; AC |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Colomina, Jimenez, et al., 1976
Colomina, M.; Jimenez, P.; Perez-Ossorio, R.; Turrion, C.,
Thermochemical properties of alkylbenzoic acids VI. Enthalpies of combustion and formation of the o-, m-, and p-ethylbenzoic acids,
J. Chem. Thermodyn., 1976, 8, 439-444. [all data]
Colomina, Jimenez, et al., 1984
Colomina, M.; Jimenez, P.; Roux, M.V.; Turrion, C.,
Thermochemical properties of benzoic acid derivatives. XI. Vapour pressures and enthalpies of sublimation and formation of the six dimethylbenzoic acids,
J. Chem. Thermodyn., 1984, 16, 1121-1127. [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]
Crawford and Stewart, 1952
Crawford, M.; Stewart, F.H.C.,
The Preparation of Some Alkyl-substituted Benzoic Acids,
J. Chem. Soc., 1952, 1952, 4443-7. [all data]
Colomina, Jimenez, et al., 1984, 2
Colomina, M.; Jimenez, P.; Roux, M.V.; Turrion, C.,
Thermochemistry of p-ethylbenzoic acid,
J. Chem. Thermodyn., 1984, 16, 379-384. [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, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid Tboil Boiling point Tfus Fusion (melting) point ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation 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.