Ethane, 1,1-difluoro-
- Formula: C2H4F2
- Molecular weight: 66.0500
- IUPAC Standard InChI: InChI=1S/C2H4F2/c1-2(3)4/h2H,1H3
- IUPAC Standard InChIKey: NPNPZTNLOVBDOC-UHFFFAOYSA-N
- CAS Registry Number: 75-37-6
- 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: Ethylidene fluoride; Algofrene Type 67; Freon 152a; FC 152a; Genetron 152a; R 152a; 1,1-Difluoroethane; CH3CHF2; Ethylidene difluoride; GENETRON 100; Propellant 152a; Halocarbon 152A; UN 1030; Dymel 152; Dymel 152A; HFC 152a
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Gas phase thermochemistry 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -118.78 ± 0.95 | kcal/mol | Ccb | Kolesov, Shtekher, et al., 1968 | Reanalyzed by Kolesov and Papina, 1983, Original value = -117.3 ± 2.0 kcal/mol |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°gas | -291.5 ± 2.0 | kcal/mol | Ccb | Kolesov, Shtekher, et al., 1968 |
Condensed phase thermochemistry data
Go To: Top, Gas 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: Eugene S. Domalski and Elizabeth D. Hearing
Constant pressure heat capacity of liquid
| Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 28.038 | 300. | Nakagawa, Hori, et al., 1993 | T = 276 to 360 K. p = 0.629 MPa. |
| 28.30 | 298.17 | Porichanskii, Ponomareva, et al., 1982 | T = 220 to 425 K. Unsmoothed experimental datum. Cp data given as 1.793 J/g*K. |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Kolesov, Shtekher, et al., 1968
Kolesov, V.P.; Shtekher, S.N.; Martynov, A.M.; Skuratov, S.M.,
Standard enthalpy of formation of 1,1-difluoroethane,
Russ. J. Phys. Chem. (Engl. Transl.), 1968, 42, 975-976. [all data]
Kolesov and Papina, 1983
Kolesov, V.P.; Papina, T.S.,
Thermochemistry of Haloethanes,
Russ. Chem. Rev., 1983, 52, 425. [all data]
Nakagawa, Hori, et al., 1993
Nakagawa, S.; Hori, T.; Sato, H.,
and Watanabe K., Isobaric heat capacity for liquid 1-chloro-1,1-difluorethane and 1,1-difluoroethane,
J. Chem. Eng. Data, 1993, 38(1), 70-74. [all data]
Porichanskii, Ponomareva, et al., 1982
Porichanskii, E.G.; Ponomareva, O.P.; Svetlichnyi, P.I.,
Study of the isobaric heat capacity of Freon 152A in a wide range of parametric conditions, Izv. Vyssh. Uchebn. Zaved.,
Energ., 1982, (3), 122-125. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid ΔcH°gas Enthalpy of combustion of gas at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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