Ethane, 1,1,1-trifluoro-

Data at NIST subscription sites:

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.


Gas phase thermochemistry data

Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), 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
Δfgas-178.94 ± 0.76kcal/molEqkWu and Rodgers, 1974Reanalyzed by Kolesov and Papina, 1983, Original value = -178.2 ± 0.4 kcal/mol; Heat of formation Unpublished results by B.J. Zwolinski
Δfgas-178.9 ± 0.4kcal/molCcbKolesov, Martynov, et al., 1965Corrected for CODATA value of ΔfH; Authors hf298_gas[kcal/mol]=-174.1±0.4
Quantity Value Units Method Reference Comment
Δcgas-241.0 ± 0.4kcal/molCcbKolesov, Martynov, et al., 1965Corrected for CODATA value of ΔfH; Authors hf298_gas[kcal/mol]=-174.1±0.4

Condensed phase thermochemistry data

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), 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

Quantity Value Units Method Reference Comment
liquid53.561cal/mol*KN/ARussell, Golding, et al., 1944 

Constant pressure heat capacity of liquid

Cp,liquid (cal/mol*K) Temperature (K) Reference Comment
26.209220.Russell, Golding, et al., 1944T = 15 to 226 K.

Phase change data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Mass spectrum (electron ionization), 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
DH - Eugene S. Domalski and Elizabeth D. Hearing
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil226.KN/APCR Inc., 1990BS
Tboil226.45KN/AHenne and Renoll, 1936Uncertainty assigned by TRC = 0.1 K; TRC
Quantity Value Units Method Reference Comment
Ttriple161.82KN/ARussell, Golding, et al., 1944, 2Crystal phase 1 phase; Uncertainty assigned by TRC = 0.02 K; TRC
Quantity Value Units Method Reference Comment
Tc345.860KN/AFujiwara, Nakamura, et al., 1998Uncertainty assigned by TRC = 0.05 K; For ITS-90 scale. Includes review of and comparison with previous literature; TRC
Tc345.860KN/AAoyama, Kishizawa, et al., 1996Uncertainty assigned by TRC = 0.02 K; For ITS-90, at temperture corres. to DC, includes review of and comparison with previous literture; TRC
Tc345.97KN/AFukushima, 1993Uncertainty assigned by TRC = 0.2 K; TRC
Tc346.25KN/AMears, Stahl, et al., 1955Uncertainty assigned by TRC = 0.7 K; by sealed tube method; TRC
Quantity Value Units Method Reference Comment
Pc37.147atmN/AFujiwara, Nakamura, et al., 1998Uncertainty assigned by TRC = 0.05 atm; includes review of and comparison with previous literature; TRC
Pc33.670atmN/AZhang, Sato, et al., 1995Uncertainty assigned by TRC = 0.05 atm; by extrapolation of vapor pressure to Tc from previous publ.; TRC
Pc37.20atmN/AFukushima, 1993Uncertainty assigned by TRC = 0.05 atm; TRC
Pc37.0849atmN/AMears, Stahl, et al., 1955Uncertainty assigned by TRC = 1.0207 atm; from vapor pressure equation at Tc; TRC
Quantity Value Units Method Reference Comment
ρc5.16mol/lN/AFujiwara, Nakamura, et al., 1998Uncertainty assigned by TRC = 0.04 mol/l; includes review of and comparison with previous literature; TRC
ρc5.16mol/lN/AAoyama, Kishizawa, et al., 1996Uncertainty assigned by TRC = 0.02 mol/l; at critical opalesence, includes review of and comparison with previous literature; TRC
ρc5.10mol/lN/AFukushima, 1993Uncertainty assigned by TRC = 0.04 mol/l; TRC
ρc5.16mol/lN/AMears, Stahl, et al., 1955Uncertainty assigned by TRC = 0.18 mol/l; rectilinear diameters; TRC

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
4.5829224.40N/ARussell, Golding, et al., 1944P - 94.54 kPa; DH
4.33240.EBWeber and Defibaugh, 1996Based on data from 236. to 280. K.; AC
4.18250.EBWeber and Defibaugh, 1996Based on data from 236. to 280. K.; AC
3.99260.EBWeber and Defibaugh, 1996Based on data from 236. to 280. K.; AC
3.80270.EBWeber and Defibaugh, 1996Based on data from 236. to 280. K.; AC
4.52233.BGMears, Stahl, et al., 1955, 2AC
3.92273.BGMears, Stahl, et al., 1955, 2AC
3.30303.BGMears, Stahl, et al., 1955, 2AC
2.1333.BGMears, Stahl, et al., 1955, 2AC
4.90211.N/ARussell, Golding, et al., 1944Based on data from 174. to 226. K.; AC
4.59 ± 0.02224.CRussell, Golding, et al., 1944AC

Entropy of vaporization

ΔvapS (cal/mol*K) Temperature (K) Reference Comment
20.42224.40Russell, Golding, et al., 1944P; DH

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (atm)
    T = temperature (K)

View plot Requires a JavaScript / HTML 5 canvas capable browser.

Temperature (K) A B C Reference Comment
173.60 to 225.784.01852786.645-30.093Russell, Golding, et al., 1944Coefficents calculated by NIST from author's data.

Enthalpy of fusion

ΔfusH (kcal/mol) Temperature (K) Reference Comment
1.48161.9Acree, 1991AC

Enthalpy of phase transition

ΔHtrs (kcal/mol) Temperature (K) Initial Phase Final Phase Reference Comment
0.0710156.35crystaline, IIcrystaline, IRussell, Golding, et al., 1944DH
1.480161.82crystaline, IliquidRussell, Golding, et al., 1944DH

Entropy of phase transition

ΔStrs (cal/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
0.454156.35crystaline, IIcrystaline, IRussell, Golding, et al., 1944DH
9.144161.82crystaline, IliquidRussell, Golding, et al., 1944DH

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), 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

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

Ethane, 1,1,1-trifluoro- + Iodine = Hydrogen iodide + 1,1,1-Trifluoro-2-iodoethane

By formula: C2H3F3 + I2 = HI + C2H2F3I

Quantity Value Units Method Reference Comment
Δr-15.3 ± 0.5kcal/molEqkWu and Rodgers, 1974gas phase; Heat of formation Unpublished results by B.J. Zwolinski

Mass spectrum (electron ionization)

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction 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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.

Mass spectrum
For Zoom
1.) Enter the desired X axis range (e.g., 100, 200)
2.) Check here for automatic Y scaling
3.) Press here to zoom

Additional Data

View image of digitized spectrum (can be printed in landscape orientation).

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 19362

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.


References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

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]

Russell, Golding, et al., 1944
Russell, H., Jr.; Golding, D.R.V.; Yost, D.M., The heat capacity, heats of transition, fusion and vaporization, vapor pressure and entropy of 1,1,1-trifluoroethane, J. Am. Chem. Soc., 1944, 66, 16-20. [all data]

PCR Inc., 1990
PCR Inc., Research Chemicals Catalog 1990-1991, PCR Inc., Gainesville, FL, 1990, 1. [all data]

Henne and Renoll, 1936
Henne, A.L.; Renoll, M.W., J. Am. Chem. Soc., 1936, 58, 889. [all data]

Russell, Golding, et al., 1944, 2
Russell, H.K.; Golding, D.R.; Yost, D.M., The heat capacity, heat of transition, fusion & vaporization, Vapor press. and entropy of 1,1,1-trifluoroethane, J. Am. Chem. Soc., 1944, 66, 16. [all data]

Fujiwara, Nakamura, et al., 1998
Fujiwara, K.; Nakamura, S.; Noguchi, M., Critical Parameters and Vapor Pressure Measurements for 1,1,1-Trifluoroethane (R-143a), J. Chem. Eng. Data, 1998, 43, 55-9. [all data]

Aoyama, Kishizawa, et al., 1996
Aoyama, H.; Kishizawa, G.; Sato, H.; Watanabe, K., Vapor-Liquid Coexistence Curves in the Critical Region and the Critical Temperatures and Densities of 1,1,1,2-Tetrafluoroethane (R-134a), 1,1,1- Trifluoroethane (R-143a), and 1,1,1,2,3,3- Hexafluorop, J. Chem. Eng. Data, 1996, 41, 1046-1051. [all data]

Fukushima, 1993
Fukushima, M., Measurements of vapor pressure , vapor-liquid coexistence curve and critical parameters of HFC-143a, Nippon Reito Kyokai Ronbunshu, 1993, 10, 87-93. [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]

Zhang, Sato, et al., 1995
Zhang, H.-L.; Sato, H.; Watanabe, K., Vapor Pressures, Gas-Phase PVT Properties, and Second Virial Coefficients for 1,1,1-Trifluoroethane, J. Chem. Eng. Data, 1995, 40, 887-90. [all data]

Weber and Defibaugh, 1996
Weber, L.A.; Defibaugh, D.R., Vapor Pressures and PVT Properties of the Gas Phase of 1,1,1-Trifluoroethane, J. Chem. Eng. Data, 1996, 41, 6, 1477-1480, https://doi.org/10.1021/je9602071 . [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]

Acree, 1991
Acree, William E., Thermodynamic properties of organic compounds: enthalpy of fusion and melting point temperature compilation, Thermochimica Acta, 1991, 189, 1, 37-56, https://doi.org/10.1016/0040-6031(91)87098-H . [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), References