Sulfur hexafluoride

• Formula: F₆S
• Molecular weight: 146.055
• IUPAC Standard InChI: InChI=1S/F6S/c1-7(2,3,4,5)6 Copy

  
• IUPAC Standard InChIKey: SFZCNBIFKDRMGX-UHFFFAOYSA-N Copy
• CAS Registry Number: 2551-62-4
• Chemical structure:
  This structure is also available as a 2d Mol file
• Other names: Sulfur fluoride; OC-6-11; Elegas; SF6; Hexafluorure de soufre; UN 1080; Esaflon; sulphur hexafluoride
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Gas phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Henry's Law data
  • Gas Chromatography
  • References
  • Notes
• Other data available:
  • Gas phase ion energetics data
  • Ion clustering data
  • IR Spectrum
  • Fluid Properties
• Data at other public NIST sites:
  • Electron-Impact Ionization Cross Sections (on physics web site)
  • Gas Phase Kinetics Database
  • X-ray Photoelectron Spectroscopy Database, version 5.0
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• NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)

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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.

Gas Phase Heat Capacity (Shomate Equation)

C_p° = A + B*t + C*t² + D*t³ + E/t²
H° − H°_298.15= A*t + B*t²/2 + C*t³/3 + D*t⁴/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t²/2 + D*t³/3 − E/(2*t²) + G
    C_p = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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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
AC - William E. Acree, Jr., James S. Chickos

Enthalpy of sublimation

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: John E. Bartmess

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

( • ) +  = ( • 2)

By formula: (F^- • F₆S) + F₆S = (F^- • 2F₆S)

F₆S^- +  = (F₆S^- • )

By formula: F₆S^- + F₆S = (F₆S^- • F₆S)

 +  = ( • )

By formula: F^- + F₆S = (F^- • F₆S)

C₆H₄N₂O₄^- +  = (C₆H₄N₂O₄^- • )

By formula: C₆H₄N₂O₄^- + F₆S = (C₆H₄N₂O₄^- • F₆S)

C₆H₄N₂O₄^- +  = (C₆H₄N₂O₄^- • )

By formula: C₆H₄N₂O₄^- + F₆S = (C₆H₄N₂O₄^- • F₆S)

F₅S^- +  = (F₅S^- • )

By formula: F₅S^- + F₆S = (F₅S^- • F₆S)

 +  = ( • )

By formula: Cl^- + F₆S = (Cl^- • F₆S)

Henry's Law 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: Rolf Sander

Henry's Law constant (water solution)

k_H(T) = k°_H exp(d(ln(k_H))/d(1/T) ((1/T) - 1/(298.15 K)))
k°_H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(k_H))/d(1/T) = Temperature dependence constant (K)

Gas Chromatography

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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

Normal alkane RI, non-polar column, custom temperature program

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References

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

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

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

Ohta, Yamamuro, et al., 1994
Ohta, T.; Yamamuro, O.; Suga, H., Heat capacity and enthalpy of sublimation of sulful hexafluoride, J. Chem. Thermodyn., 1994, 26, 319-31. [all data]

Matzik and Schneider, 1985
Matzik, I.; Schneider, G.M., Fluid phase equilibria of binary mixtures of sulfur hexafluoride with octane, nonane, hendecane, and cis-decahydronaphthalene at temperature between 280 K and 440 K and at pressures up to 140 MPa, Ber. Bunsen-Ges. Phys. Chem., 1985, 89, 551. [all data]

Goloborod'ko and Khodeeva, 1972
Goloborod'ko, N.P.; Khodeeva, S.M., Russ. J. Phys. Chem. (Engl. Transl.), 1972, 46, 235-7. [all data]

Makarevich, Sokolova, et al., 1968
Makarevich, L.A.; Sokolova, E.S.; Sorina, G.A., Critical Parameters pf Sulfur Hexafluoride, Zh. Fiz. Khim., 1968, 42, 22-3. [all data]

Khodeeva, 1966
Khodeeva, S.M., Visual Observation of Gas-Gas Mixture, Russ. J. Phys. Chem. (Engl. Transl.), 1966, 40, 1061-3. [all data]

Atack and Schneider, 1951
Atack, D.; Schneider, W.G., The Coexistence Curve of Sulfur Hexafluoride in the Critical Region., J. Phys. Colloid Chem., 1951, 55, 532. [all data]

Makarevich and Sokolova, 1973
Makarevich, L.A.; Sokolova, O.N., Russ. J. Phys. Chem. (Engl. Transl.), 1973, 47, 436-7. [all data]

Ohta, Yamamuro, et al., 1994, 2
Ohta, Tomoko; Yamamuro, Osamu; Suga, Hiroshi, Heat capacity and enthalpy of sublimation of sulfur hexafluoride, The Journal of Chemical Thermodynamics, 1994, 26, 3, 319-331, https://doi.org/10.1016/0021-9614(94)90009-4 . [all data]

Klemm and Henkel, 1932
Klemm, Wilhelm; Henkel, Paul, «65533»ber einige physikalische Eigenschaften von SF6, SeF6, TeF6 und CF4, Z. Anorg. Allg. Chem., 1932, 207, 1, 73-86, https://doi.org/10.1002/zaac.19322070107 . [all data]

Hiraoka, Shimizu, et al., 1995
Hiraoka, K.; Shimizu, A.; Minamitsu, A.; Nasu, M.; Fujimaki, S.; Yamabe, S., The small binding energies of the negative cluster ions: SF5-(SF6)1, SF6-(SF6)1 and F-(SF6)n (n=1 and 2), in the gas phase, Chem. Phys. Lett., 1995, 241, 5-6, 623, https://doi.org/10.1016/0009-2614(95)00676-U . [all data]

Chowdhury and Kebarle, 1986
Chowdhury, S.; Kebarle, P., Role of Binding Energies in A^-.B and A.B^- Complexes in the Kinetics of Gas Phase Electron Transfer Reactions:A^- + B = A + B^- Involving Perfluoro Compounds: SF₆, C₆F₁₁CF₃, J. Chem. Phys., 1986, 85, 9, 4989, https://doi.org/10.1063/1.451687 . [all data]

Flanagan, Streete, et al., 1997
Flanagan, R.J.; Streete, P.J.; Ramsey, J.D., Volatile Substance Abuse, UNODC Technical Series, No 5, United Nations, Office on Drugs and Crime, Vienna International Centre, PO Box 500, A-1400 Vienna, Austria, 1997, 56, retrieved from http://www.odccp.org/pdf/technical_series₁997-01-01₁.pdf. [all data]

Strete, Ruprah, et al., 1992
Strete, P.J.; Ruprah, M.; Ramsey, J.D.; Flanagan, R.J., Detection and identification of volatile substances by headspace capillary gas chromatography to aid the diagnosis of acute poisoning, Analyst, 1992, 117, 7, 1111-1127, https://doi.org/10.1039/an9921701111 . [all data]

Notes

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas Chromatography, References

• Symbols used in this document:
  

  Pc	Critical pressure
  S°gas,1 bar	Entropy of gas at standard conditions (1 bar)
  Tboil	Boiling point
  Tc	Critical temperature
  Ttriple	Triple point temperature
  Vc	Critical volume
  d(ln(kH))/d(1/T)	Temperature dependence parameter for Henry's Law constant
  k°H	Henry's Law constant at 298.15K
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔsubH	Enthalpy of sublimation
  ρc	Critical density

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