Ethane, 1,1,1-trifluoro-
- Formula: C2H3F3
- Molecular weight: 84.0404
- IUPAC Standard InChI: InChI=1S/C2H3F3/c1-2(3,4)5/h1H3
- IUPAC Standard InChIKey: UJPMYEOUBPIPHQ-UHFFFAOYSA-N
- CAS Registry Number: 420-46-2
- 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: Methylfluoroform; 1,1,1-Trifluoroethane; CH3CF3; Freon 143a; FC 143a; Fluorocarbon FC143a; R 143a; 1,1,1-Trifluoroform
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Reaction 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -178.94 ± 0.76 | kcal/mol | Eqk | Wu and Rodgers, 1974 | Reanalyzed by Kolesov and Papina, 1983, Original value = -178.2 ± 0.4 kcal/mol; Heat of formation Unpublished results by B.J. Zwolinski |
| ΔfH°gas | -178.9 ± 0.4 | kcal/mol | Ccb | Kolesov, Martynov, et al., 1965 | Corrected for CODATA value of ΔfH; Authors hf298_gas[kcal/mol]=-174.1±0.4 |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°gas | -241.0 ± 0.4 | kcal/mol | Ccb | Kolesov, Martynov, et al., 1965 | Corrected for CODATA value of ΔfH; Authors hf298_gas[kcal/mol]=-174.1±0.4 |
Condensed phase thermochemistry 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 by: Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| S°liquid | 53.561 | cal/mol*K | N/A | Russell, Golding, et al., 1944 |
Constant pressure heat capacity of liquid
| Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 26.209 | 220. | Russell, Golding, et al., 1944 | T = 15 to 226 K. |
Reaction thermochemistry data
Go To: Top, Gas phase thermochemistry data, 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
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=
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By formula: C2H3F3 + I2 = HI + C2H2F3I
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -15.3 ± 0.5 | kcal/mol | Eqk | Wu and Rodgers, 1974 | gas phase; Heat of formation Unpublished results by B.J. Zwolinski |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Wu and Rodgers, 1974
Wu, E.; Rodgers, A.S.,
Thermochemistry of gas-phase equilibrium CF3CH3 + I2 = CF3CH2I + HI. The carbon-hydrogen bond dissociation energy in 1,1,1-trifluoroethane and the heat of formation of the 2,2,2-trifluoroethyl radical,
J. Phys. Chem., 1974, 78, 2315-2317. [all data]
Kolesov and Papina, 1983
Kolesov, V.P.; Papina, T.S.,
Thermochemistry of Haloethanes,
Russ. Chem. Rev., 1983, 52, 425. [all data]
Kolesov, Martynov, et al., 1965
Kolesov, V.P.; Martynov, A.M.; Skuratov, S.M.,
Standard enthalpy of formation of 1,1,1-trifluoroethane,
Russ. J. Phys. Chem. (Engl. Transl.), 1965, 39, 223-225. [all data]
Russell, Golding, et al., 1944
Russell, H., Jr.; Golding, D.R.V.; Yost, D.M.,
The heat capacity, heats of transition, fusion and vaporization, vapor pressure and entropy of 1,1,1-trifluoroethane,
J. Am. Chem. Soc., 1944, 66, 16-20. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions ΔcH°gas Enthalpy of combustion of gas at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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