Ethane, 1,2,2-trichloro-1,1-difluoro-
- Formula: C2HCl3F2
- Molecular weight: 169.385
- IUPAC Standard InChI: InChI=1S/C2HCl3F2/c3-1(4)2(5,6)7/h1H
- IUPAC Standard InChIKey: FQAMAOOEZDRHHB-UHFFFAOYSA-N
- CAS Registry Number: 354-21-2
- 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: Frigen 122; 1,1-Difluoro-1,2,2-trichloroethane; 1,1,2-Trichloro-2,2-difluoroethane; 1,2,2-Trichloro-1,1-difluoroethane; 2,2-Difluoro-1,1,2-trichloroethane; Ethane, 1,1-difluoro-1,2,2-trichloro-; Ucon fluorocarbon 122; F 122 (halocarbon); FC 122; Freon 122; HCFC 122; R 122; 1,2-Difluoro-1,2,2-trichloroethane
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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 | 281.03 | J/mol*K | N/A | Lebedev and Kulagina, 1992 |
Constant pressure heat capacity of liquid
| Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 167.04 | 298.15 | Lebedev and Kulagina, 1992 | T = 13.8 to 330 K. |
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
AC - William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 345. | K | N/A | Farchan Laboratories, 1990 | BS |
| Tboil | 345. | K | N/A | PCR Inc., 1990 | BS |
| Tboil | 345.1 | K | N/A | Weast and Grasselli, 1989 | BS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔvapH° | 32.8 ± 0.4 | kJ/mol | N/A | Varushchenko, Druzhinina, et al., 2007 | Based on data from 297. - 345. K. See also Varushchenko and Bulgakova, 1976.; AC |
| ΔvapH° | 32.9 ± 0.1 | kJ/mol | C | Varushchenko, Pashchenko, et al., 1997 | AC |
IR Spectrum
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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: Coblentz Society, Inc.
Condensed Phase Spectrum
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Notice: Except where noted, spectra from this collection were measured on dispersive instruments, often in carefully selected solvents, and hence may differ in detail from measurements on FTIR instruments or in other chemical environments. More information on the manner in which spectra in this collection were collected can be found here.
Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.
Additional Data
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| Owner | COBLENTZ SOCIETY Collection (C) 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
|---|---|
| Origin | DOW CHEMICAL COMPANY |
| Source reference | COBLENTZ NO. 277 |
| Date | Not specified, most likely prior to 1970 |
| Name(s) | 1,2,2-trichloro-1,1-difluoroethane |
| State | SOLUTION (10% CCl4 FOR 2.5-7.5, 10% CS2 FOR 7.5-16 MICRON) |
| Instrument | Not specified, most likely a prism, grating, or hybrid spectrometer. |
| Path length | 0.01 CM, 0.01 CM SPECTRAL CONTAMINATION DUE TO CCl4 AROUND 1550 CM-1 |
| Resolution | 4 |
| Sampling procedure | TRANSMISSION |
| Data processing | DIGITIZED BY NIST FROM HARD COPY |
Mass spectrum (electron ionization)
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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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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Due to licensing restrictions, this spectrum cannot be downloaded.
| Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
|---|---|
| NIST MS number | 6547 |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, IR Spectrum, Mass spectrum (electron ionization), NIST Free Links, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Lebedev and Kulagina, 1992
Lebedev, B.V.; Kulagina, T.G.,
Thermodynamic properties of 1,2-difluoro-1,2,2-trichloroethane and 1,2-difluoro-2,2-dichloroethane at temperatures from 0 to 330 K,
J. Chem. Thermodynam., 1992, 24, 751-760. [all data]
Farchan Laboratories, 1990
Farchan Laboratories,
Research Chemicals Catalog, Farchan Laboratories, Gainesville, FL, 1990, 91. [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]
Varushchenko, Druzhinina, et al., 2007
Varushchenko, R.M.; Druzhinina, A.I.; Kuramshina, G.M.; Dorofeeva, O.V.,
Thermodynamics of vaporization of some freons and halogenated ethanes and propanes,
Fluid Phase Equilibria, 2007, 256, 1-2, 112-122, https://doi.org/10.1016/j.fluid.2007.02.017
. [all data]
Varushchenko and Bulgakova, 1976
Varushchenko, R.M.; Bulgakova, L.L.,
Tr. Khim. Khim. Tekhnol., 1976, 3, 29. [all data]
Varushchenko, Pashchenko, et al., 1997
Varushchenko, A.M.; Pashchenko, L.L.; Yuldasheva, V.M.; Orlov, A.P.,
Thermodynamics of vaporization of 1,1-difluoro-1,2,2- and 1,2-difluoro-1,1,2-trichloroethanes,
Zh. Fiz. Khim., 1997, 71, 4, 620. [all data]
Notes
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- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions Tboil Boiling point ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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