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
  • IR Spectrum
  • References
  • Notes
• Other data available:
  • Henry's Law data
  • Gas phase ion energetics data
  • Ion clustering data
  • Gas Chromatography
  • 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
• Options:
  • Switch to calorie-based units

Data at NIST subscription sites:

• NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)

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, Phase change data, Reaction thermochemistry data, IR Spectrum, References, Notes

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.

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

View table.

Phase change data

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, IR Spectrum, 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
AC - William E. Acree, Jr., James S. Chickos

Enthalpy of sublimation

Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Phase change data, IR Spectrum, 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: 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)

IR Spectrum

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, References, Notes

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

• gas

Data compiled by: Pamela M. Chu, Franklin R. Guenther, George C. Rhoderick, and Walter J. Lafferty

• gas; IFS66V (Bruker); 3-Term B-H Apodization
  0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm^-1 resolution
• gas; IFS66V (Bruker); Boxcar Apodization
  0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm^-1 resolution
• gas; IFS66V (Bruker); Happ Genzel Apodization
  0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm^-1 resolution
• gas; IFS66V (Bruker); NB Strong Apodization
  0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm^-1 resolution
• gas; IFS66V (Bruker); Triangular Apodization
  0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm^-1 resolution

References

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Notes

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]

Notes

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, 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
  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
• The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
• Customer support for NIST Standard Reference Data products.