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
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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

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Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity	Value	Units	Method	Reference	Comment
Δ_fH°_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Wu and Rodgers, 1974	Reanalyzed by Kolesov and Papina, 1983, Original value = -178.2 ± 0.4 kcal/mol; Heat of formation Unpublished results by B.J. Zwolinski
Δ_fH°_gas	-178.9 ± 0.4	kcal/mol	Ccb	Kolesov, Martynov, et al., 1965	Corrected for CODATA value of Δ_fH; Authors hf298_gas[kcal/mol]=-174.1±0.4
Quantity	Value	Units	Method	Reference	Comment
Δ_cH°_gas	-241.0 ± 0.4	kcal/mol	Ccb	Kolesov, Martynov, et al., 1965	Corrected for CODATA value of Δ_fH; Authors hf298_gas[kcal/mol]=-174.1±0.4

Gas Chromatography

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Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Normal alkane RI, non-polar column, temperature ramp

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Column type	Active phase	I	Reference	Comment
Capillary	OV-101	268.	Zenkevich, 2005	25. m/0.20 mm/0.10 μm, N2/He, 6. K/min; T_start: 50. C; T_end: 250. C

References

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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]

Zenkevich, 2005
Zenkevich, I.G., Experimentally measured retention indices., 2005. [all data]

Notes

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Symbols used in this document:

Δ_cH°_gas Enthalpy of combustion of gas at standard conditions

Δ_fH°_gas Enthalpy of formation of gas at standard conditions
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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Δ_cH°_gas	Enthalpy of combustion of gas at standard conditions
Δ_fH°_gas	Enthalpy of formation of gas at standard conditions