Ethane, 1,1,1-trifluoro-

• Formula: C₂H₃F₃
• Molecular weight: 84.0404
• IUPAC Standard InChI: InChI=1S/C2H3F3/c1-2(3,4)5/h1H3 Copy

  
• IUPAC Standard InChIKey: UJPMYEOUBPIPHQ-UHFFFAOYSA-N Copy
• 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
  The 3d structure may be viewed using Java or Javascript.
• Other names: Methylfluoroform; 1,1,1-Trifluoroethane; CH3CF3; Freon 143a; FC 143a; Fluorocarbon FC143a; R 143a; 1,1,1-Trifluoroform
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• Information on this page:
  • Phase change data
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Mass spectrum (electron ionization)
  • Gas Chromatography
  • Fluid Properties
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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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
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

Enthalpy of vaporization

Entropy of vaporization

Antoine Equation Parameters

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

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Enthalpy of fusion

Enthalpy of phase transition

Entropy of phase transition

References

Go To: Top, Phase change data, Notes

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

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
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]

Russell, Golding, et al., 1944, 2
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]

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

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• Symbols used in this document:
  

  Pc	Critical pressure
  Tboil	Boiling point
  Tc	Critical temperature
  Ttriple	Triple point temperature
  ΔHtrs	Enthalpy of phase transition
  ΔStrs	Entropy of phase transition
  ΔfusH	Enthalpy of fusion
  ΔvapH	Enthalpy of vaporization
  ΔvapS	Entropy of vaporization
  ρc	Critical density

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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