Thiophene, 2-ethyl-
- Formula: C6H8S
- Molecular weight: 112.193
- IUPAC Standard InChI: InChI=1S/C6H8S/c1-2-6-4-3-5-7-6/h3-5H,2H2,1H3
- IUPAC Standard InChIKey: JCCCMAAJYSNBPR-UHFFFAOYSA-N
- CAS Registry Number: 872-55-9
- 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: 2-Ethylthiophene; 2-Ethylthiophenol
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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 | 407.2 | K | N/A | Weast and Grasselli, 1989 | BS |
| Tboil | 406.15 | K | N/A | Levi and Nicholls, 1958 | Uncertainty assigned by TRC = 2. K; TRC |
| Tboil | 407. | K | N/A | Wender, Greenfield, et al., 1951 | Uncertainty assigned by TRC = 4. K; TRC |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔvapH° | 9.5 ± 0.2 | kcal/mol | C | Ribeiro da Silva and Santos, 2007 | AC |
Enthalpy of vaporization
| ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 9.49 | 348. | IA | Stephenson and Malanowski, 1987 | Based on data from 333. to 374. K. See also Eon, Pommier, et al., 1971 and Dykyj, Svoboda, et al., 1999.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
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| Temperature (K) | A | B | C | Reference | Comment |
|---|---|---|---|---|---|
| 333.4 to 373.5 | 5.34485 | 2248.151 | 15.596 | Eon, Pommier, et al., 1971 | 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.
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]
Levi and Nicholls, 1958
Levi, L.; Nicholls, R.V.V.,
Formation of Styrene by Pyrolysis of Aromatic Heterocyclic Aldehyde- Aliphatic Acid Anhydride Mixtures on Morden Bentonite,
Ind. Eng. Chem., 1958, 50, 1005. [all data]
Wender, Greenfield, et al., 1951
Wender, I.; Greenfield, H.; Orchin, M.,
Chemistry of Oxo and Related Reactions IV. Reductions in the Aromatic Series,
J. Am. Chem. Soc., 1951, 73, 2656. [all data]
Ribeiro da Silva and Santos, 2007
Ribeiro da Silva, M.A.V.; Santos, Ana Filipa L.O.M.,
Thermochemical study of 2- and 3-alkyl substituted thiophenes,
J Therm Anal Calorim, 2007, 88, 1, 7-17, https://doi.org/10.1007/s10973-006-8326-3
. [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]
Eon, Pommier, et al., 1971
Eon, C.; Pommier, C.; Guiochon, G.,
Vapor pressures and second virial coefficients of some five-membered heterocyclic derivatives,
J. Chem. Eng. Data, 1971, 16, 4, 408-410, https://doi.org/10.1021/je60051a008
. [all data]
Dykyj, Svoboda, et al., 1999
Dykyj, J.; Svoboda, J.; Wilhoit, R.C.; Frenkel, M.L.; Hall, K.R.,
Vapor Pressure of Chemicals: Part A. Vapor Pressure and Antoine Constants for Hydrocarbons and Sulfur, Selenium, Tellurium and Hydrogen Containing Organic Compounds, Springer, Berlin, 1999, 373. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Tboil Boiling point 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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