Perfluoropropane

• Formula: C₃F₈
• Molecular weight: 188.0193
• IUPAC Standard InChI: InChI=1S/C3F8/c4-1(5,2(6,7)8)3(9,10)11 Copy

  
• IUPAC Standard InChIKey: QYSGYZVSCZSLHT-UHFFFAOYSA-N Copy
• CAS Registry Number: 76-19-7
• Chemical structure:
  This structure is also available as a 2d Mol file
• Other names: Propane, octafluoro-; Freon 218; Genetron 218; Octafluoropropane; C3F8; UN 2424; 1,1,1,2,2,3,3,3-Octafluoropropane; R 218; Perflutren; Propane, 1,1,1,2,2,3,3,3-octafluoro-; Definity; DMP 115; FC 218; FC 218 (refrigerant); HFC 218; MRX 115; PFC 218
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• Information on this page:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Mass spectrum (electron ionization)
  • References
  • Notes
• Other data available:
  • Gas phase ion energetics data
  • Fluid Properties
• Data at other public NIST sites:
  • Electron-Impact Ionization Cross Sections (on physics web site)
  • Gas Phase Kinetics Database
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Gas 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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

Constant pressure heat capacity of liquid

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
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis

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

Entropy of fusion

Enthalpy of phase transition

Entropy of phase transition

Reaction 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: 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

8 +  = 3 + 8

By formula: 8Na + C₃F₈ = 3C + 8FNa

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

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.

Kolesov, Talakin, et al., 1967
Kolesov, V.P.; Talakin, O.G.; Skuratov, S.M., Standard enthalpy of formation of perfluoropropane and enthalpies of formation of normal perfluoroalkanes, Vestn. Mosk. Univ. Khim., 1967, 22, 38-42. [all data]

Kolesov and Kozina, 1986
Kolesov, V.P.; Kozina, M.P., Thermochemistry of organic and organohalogen compounds, Russ. Chem. Rev., 1986, 55, 912. [all data]

Pace and Plaush, 1967
Pace, E.L.; Plaush, A.C., Thermodynamic properties of octafluoropropane from 14K to its normal boiling point. An estimate of the barrier to internal rotation from the entropy and heat capacity of the gas, J. Chem. Phys., 1967, 47, 38-43. [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]

Streng, 1971
Streng, A.G., Miscibility and Compatibility of Some Liquid and Solidified Gases at Low Temperature, J. Chem. Eng. Data, 1971, 16, 357. [all data]

Gilmour, Zwicker, et al., 1967
Gilmour, J.B.; Zwicker, J.O.; Katz, J.; Scott, R.L., Fluorocarbon Solutions at Low Temperatures V. The Liquid Mixtures C2H6 + C2F6m, C3H8 + C2F6, CH4 + C3F8, C2H6 + C3F8, C3H8 + C3F8, n-C4H10 + C3F8, i-C4H10 + C3F8, C3H8 + n-C4F10, n-C6H14 + n-C4F10, n, J. Phys. Chem., 1967, 71, 3259. [all data]

Crowder, Taylor, et al., 1967
Crowder, G.A.; Taylor, Z.L.; Reed, T.M.; Young, J.A., Vapor Pressures and Triple Point Temp. for Several Pure Fluorocarbons fluorocarbons, J. Chem. Eng. Data, 1967, 12, 481. [all data]

Leu and Robinson, 1992
Leu, A.D.; Robinson, D.B., High-pressure vapor-liquid equilibrium phase properties of the octafluoropropane (K-218)-chlorodifluoromethane (Freon-22) binary system, J. Chem. Eng. Data, 1992, 37, 7-10. [all data]

Mousa, Kay, et al., 1972
Mousa, A.H.N.; Kay, W.B.; Kreglewski, A., The critical constants of binary mixtures of certain perfluoro-compounds with alkanes, J. Chem. Thermodyn., 1972, 4, 301-11. [all data]

Brown, 1963
Brown, J.A., Physical Properties of Perfluoropropane, J. Chem. Eng. Data, 1963, 8, 106. [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Pace, 1967
Pace, E.L., Thermodynamic Properties of Octafluoropropane from 14°K to Its Normal Boiling Point. An Estimate of the Barrier to Internal Rotation from the Entropy and Heat Capacity of the Gas, J. Chem. Phys., 1967, 47, 1, 38, https://doi.org/10.1063/1.1711886 . [all data]

Brown, 1963, 2
Brown, James A., Physical Properties of Perfluoropropane., J. Chem. Eng. Data, 1963, 8, 1, 106-108, https://doi.org/10.1021/je60016a032 . [all data]

Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D., Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III, J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985 . [all data]

Notes

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• Symbols used in this document:
  

  Cp,liquid	Constant pressure heat capacity of liquid
  Pc	Critical pressure
  S°liquid	Entropy of liquid at standard conditions
  Tboil	Boiling point
  Tc	Critical temperature
  Tfus	Fusion (melting) point
  Ttriple	Triple point temperature
  ΔHtrs	Enthalpy of phase transition
  ΔStrs	Entropy of phase transition
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔfusH	Enthalpy of fusion
  ΔfusS	Entropy of fusion
  ΔrH°	Enthalpy of reaction at standard conditions
  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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