Ethene, tetrafluoro-
- Formula: C2F4
- Molecular weight: 100.0150
- IUPAC Standard InChI: InChI=1S/C2F4/c3-1(4)2(5)6
- IUPAC Standard InChIKey: BFKJFAAPBSQJPD-UHFFFAOYSA-N
- CAS Registry Number: 116-14-3
- 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: Ethylene, tetrafluoro-; Perfluoroethene; Perfluoroethylene; Tetrafluoroethene; Tetrafluoroethylene; TFE; C2F4; Fluoroplast 4; Tetrafluorethylene; 1,1,2,2-Tetrafluoroethylene; Tetrafluorethene; Ethene, 1,1,2,2-tetrafluoro-
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Gas phase thermochemistry data
Go To: Top, 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
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -658.56 | kJ/mol | Review | Chase, 1998 | Data last reviewed in June, 1969 |
| ΔfH°gas | -661. ± 3. | kJ/mol | Cm | Kolesov, Zenkov, et al., 1962 | Reanalyzed by Cox and Pilcher, 1970, Original value = -636. ± 3. kJ/mol; ALS |
| ΔfH°gas | -661. ± 3. | kJ/mol | Chyd | Neugebauer and Margrave, 1956 | Reanalyzed by Cox and Pilcher, 1970, Original value = -635.5 ± 4.6 kJ/mol; ALS |
| ΔfH°gas | -686. | kJ/mol | Ccb | Wartenberg and Schiefer, 1955 | ALS |
| ΔfH°gas | -678. ± 4. | kJ/mol | Cm | Kirkbride and Davidson, 1954 | Von Wartenberg method; ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 300.01 | J/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1969 |
Gas Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 298. to 1100. | 1100. to 6000. |
|---|---|---|
| A | 43.55126 | 129.9776 |
| B | 175.9079 | 1.690918 |
| C | -138.7331 | -0.340087 |
| D | 40.35619 | 0.023448 |
| E | -0.381260 | -10.83204 |
| F | -679.4983 | -725.3048 |
| G | 303.9350 | 417.1829 |
| H | -658.5616 | -658.5616 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in June, 1969 | Data last reviewed in June, 1969 |
References
Go To: Top, Gas phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Kolesov, Zenkov, et al., 1962
Kolesov, V.P.; Zenkov, I.D.; Skuratov, S.M.,
The standard enthalpy of formation of tetrafluoroethylene,
Russ. J. Phys. Chem. (Engl. Transl.), 1962, 36, 45-47. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Neugebauer and Margrave, 1956
Neugebauer, C.A.; Margrave, J.L.,
The heats of formation of tetrafluoroethylene, tetrafluoromethane and 1,1-difluoroethylene,
J. Phys. Chem., 1956, 60, 1318-1321. [all data]
Wartenberg and Schiefer, 1955
Wartenberg, H.V.; Schiefer, J.,
Bildungswarmen von fluor-chlor-kohlenstoff-verbindungen,
Z. Anorg. Chem., 1955, 278, 326-332. [all data]
Kirkbride and Davidson, 1954
Kirkbride, F.W.; Davidson, F.G.,
Heats of formation of gaseous fluoro- and fluorochloro-carbons,
Nature (London), 1954, 174, 79-80. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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