Ethene, 1,1-difluoro-
- Formula: C2H2F2
- Molecular weight: 64.0341
- IUPAC Standard InChIKey: BQCIDUSAKPWEOX-UHFFFAOYSA-N
- CAS Registry Number: 75-38-7
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
View 3d structure (requires JavaScript / HTML 5) - Other names: Ethylene, 1,1-difluoro-; Genetron 1132a; Vinylidene difluoride; Vinylidene fluoride; 1,1-Difluoroethene; 1,1-Difluoroethylene; CH2=CF2; Halocarbon 1132A; NCI-C60208; UN 1959; VDF; FC 1132a
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Gas phase thermochemistry data
Go To: Top, Phase change data, Henry's Law 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 | -82.2 ± 2.4 | kcal/mol | Ccb | Kolesov, Martynov, et al., 1962 | Reanalyzed by Cox and Pilcher, 1970, Original value = -79.6 ± 2.4 kcal/mol |
ΔfH°gas | -77.7 ± 0.8 | kcal/mol | Ccr | Neugebauer and Margrave, 1957 | |
ΔfH°gas | -79.83 ± 0.20 | kcal/mol | Ccb | Neugebauer and Margrave, 1956 | Reanalyzed by Cox and Pilcher, 1970, Original value = -77.5 ± 0.8 kcal/mol |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°gas | -259.8 ± 2.4 | kcal/mol | Ccb | Kolesov, Martynov, et al., 1962 | |
ΔcH°gas | -262.2 ± 0.8 | kcal/mol | Ccb | Neugebauer and Margrave, 1956 |
Phase change data
Go To: Top, Gas phase thermochemistry data, Henry's Law 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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 190. | K | N/A | PCR Inc., 1990 | BS |
Tboil | 190.2 | K | N/A | Weast and Grasselli, 1989 | BS |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 302.74 | K | N/A | Tsiklis and Prokhorov, 1967 | TRC |
Tc | 303.25 | K | N/A | Mears, Stahl, et al., 1955 | Uncertainty assigned by TRC = 0.7 K; by sealed tube method; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 43.7534 | atm | N/A | Mears, Stahl, et al., 1955 | Uncertainty assigned by TRC = 1.0888 atm; from vapor pressure equation at Tc; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 6.40 | mol/l | N/A | Tsiklis and Prokhorov, 1967 | Vis in pVT apparatus, Khodeeva and Lebedeva Russ. J. Phys. Chem. 1966, 40, 1668.; TRC |
ρc | 6.51 | mol/l | N/A | Mears, Stahl, et al., 1955 | Uncertainty assigned by TRC = 0.23 mol/l; rectilinear diameters; TRC |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
3.15 | 233. | BG | Mears, Stahl, et al., 1955, 2 | AC |
2.3 | 273. | BG | Mears, Stahl, et al., 1955, 2 | AC |
Henry's Law data
Go To: Top, Gas phase thermochemistry data, 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 by: Rolf Sander
Henry's Law constant (water solution)
kH(T) = k°H exp(d(ln(kH))/d(1/T) ((1/T) - 1/(298.15 K)))
k°H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(kH))/d(1/T) = Temperature dependence constant (K)
k°H (mol/(kg*bar)) | d(ln(kH))/d(1/T) (K) | Method | Reference | Comment |
---|---|---|---|---|
0.0025 | Q | N/A | missing citation give several references for the Henry's law constants but don't assign them to specific species. |
References
Go To: Top, Gas phase thermochemistry data, Phase change data, Henry's Law data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Kolesov, Martynov, et al., 1962
Kolesov, V.P.; Martynov, A.M.; Shtekher, S.M.; Skuratov, S.M.,
Standard enthalpies of formation of 1,1-difluoroethylene and of trifluoroethylene,
Russ. J. Phys. Chem. (Engl. Transl.), 1962, 36, 1118-1120. [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, 1957
Neugebauer, C.A.; Margrave, J.L.,
Heats of formation of the fluoromethanes and fluoroethylenes,
Tech. Rept., 1957, 1-45. [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]
PCR Inc., 1990
PCR Inc.,
Research Chemicals Catalog 1990-1991, PCR Inc., Gainesville, FL, 1990, 1. [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]
Tsiklis and Prokhorov, 1967
Tsiklis, D.S.; Prokhorov, V.M.,
Phase equilibria in systems containing fluorine compounds,
Zh. Fiz. Khim., 1967, 41, 2195-9. [all data]
Mears, Stahl, et al., 1955
Mears, W.H.; Stahl, R.F.; Orfeo, S.R.; Shair, R.C.; Kells, L.F.; Thompson, W.; McCann, H.,
Thermodynamic Properties of Halogenated Ethanes and Ethylenes,
Ind. Eng. Chem., 1955, 47, 1449. [all data]
Mears, Stahl, et al., 1955, 2
Mears, Whitney H.; Stahl, Richard F.; Orfeo, S. Robert; Shair, Robert C.; Kells, Lyman F.; Thompson, Walter; McCann, Harold,
Thermodynamic Properties of Halogenated Ethanes and Ethylenes,
Ind. Eng. Chem., 1955, 47, 7, 1449-1454, https://doi.org/10.1021/ie50547a052
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Phase change data, Henry's Law data, References
- Symbols used in this document:
Pc Critical pressure Tboil Boiling point Tc Critical temperature d(ln(kH))/d(1/T) Temperature dependence parameter for Henry's Law constant k°H Henry's Law constant at 298.15K ΔcH°gas Enthalpy of combustion of gas at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔvapH Enthalpy of vaporization ρc Critical density - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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