Sulfur hexafluoride

Formula: F₆S
Molecular weight: 146.055
IUPAC Standard InChI: InChI=1S/F6S/c1-7(2,3,4,5)6
IUPAC Standard InChIKey: SFZCNBIFKDRMGX-UHFFFAOYSA-N
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
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Gas phase thermochemistry data

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Quantity	Value	Units	Method	Reference	Comment
Δ_fH°_gas	-1220.47	kJ/mol	Review	Chase, 1998	Data last reviewed in June, 1976
Quantity	Value	Units	Method	Reference	Comment
S°_{gas,1 bar}	291.52	J/mol*K	Review	Chase, 1998	Data last reviewed in June, 1976

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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Temperature (K)	298. to 1000.	1000. to 6000.
A	58.90319	157.1393
B	255.5399	0.484022
C	-252.2747	-0.100724
D	88.76063	0.007127
E	-1.608971	-8.279635
F	-1252.744	-1291.990
G	287.9914	443.2111
H	-1220.473	-1220.473
Reference	Chase, 1998	Chase, 1998
Comment	Data last reviewed in June, 1976	Data last reviewed in June, 1976

Phase change data

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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

Quantity	Value	Units	Method	Reference	Comment
T_boil	209.3	K	N/A	PCR Inc., 1990	BS
Quantity	Value	Units	Method	Reference	Comment
T_triple	223.72	K	N/A	Ohta, Yamamuro, et al., 1994	Crystal phase 1 phase; Uncertainty assigned by TRC = 0.01 K; TRC
Quantity	Value	Units	Method	Reference	Comment
T_c	568.8	K	N/A	Matzik and Schneider, 1985	Uncertainty assigned by TRC = 0.7 K; TRC
T_c	318.72	K	N/A	Goloborod'ko and Khodeeva, 1972	Vis, as Goloborod'ko and Khodeeva Zh.Fiz.Khim. 1969,43,1340; TRC
T_c	318.71	K	N/A	Makarevich, Sokolova, et al., 1968	Uncertainty assigned by TRC = 0.005 K; TRC
T_c	318.76	K	N/A	Khodeeva, 1966	TRC
T_c	591.85	K	N/A	Atack and Schneider, 1951	Uncertainty assigned by TRC = 0.05 K; By observation of meniscus and plot of density vs. temp. Temperature measured with Pt Res. Therm., calibration at N.B.S., presumably IPTS-48; TRC
Quantity	Value	Units	Method	Reference	Comment
P_c	24.90	bar	N/A	Matzik and Schneider, 1985	Uncertainty assigned by TRC = 0.30 bar; TRC
P_c	37.586	bar	N/A	Makarevich, Sokolova, et al., 1968	Uncertainty assigned by TRC = 0.005 bar; TRC
Quantity	Value	Units	Method	Reference	Comment
V_c	0.198	l/mol	N/A	Makarevich, Sokolova, et al., 1968	Uncertainty assigned by TRC = 0.0004 l/mol; Vis, rect; method as Sorina and Efremova Russ. J. Phys. Chem. 1966, 40, 143.; TRC
V_c	0.197	l/mol	N/A	Khodeeva, 1966	Vis, samples thoroughly purified; TRC
Quantity	Value	Units	Method	Reference	Comment
ρ_c	5.0581	mol/l	N/A	Makarevich and Sokolova, 1973	Uncertainty assigned by TRC = 0.001 mol/l; Vis, volume adjusted by injection of mercury; TRC
ρ_c	5.147	mol/l	N/A	Atack and Schneider, 1951	Uncertainty assigned by TRC = 0.004 mol/l; from plot of density vs temperature, at the Tc; TRC

Enthalpy of sublimation

Δ_subH (kJ/mol)	Temperature (K)	Reference	Comment
23.2 ± 0.01	186.	Ohta, Yamamuro, et al., 1994, 2	AC
23.3	191.	Klemm and Henkel, 1932	Based on data from 175. to 207. K.; AC

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

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Data compiled by: John E. Bartmess

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Individual Reactions

( • Sulfur hexafluoride ) + = ( • 2)

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	16.7 ± 1.3	kJ/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase; Entropy estimated. Gaff = +1.4 at 141 K
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-5.9 ± 1.3	kJ/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase; Entropy estimated. Gaff = +1.4 at 141 K

F₆S^- + Sulfur hexafluoride = (F₆S^- • )

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.6 ± 1.3	kJ/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase; Entropy estimated. Gaff=+0.37 at 141K
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-13.0 ± 1.3	kJ/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase; Entropy estimated. Gaff=+0.37 at 141K

+ Sulfur hexafluoride = ( • )

By formula: F^- + F₆S = (F^- • F₆S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	22.6 ± 1.3	kJ/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-3. ± 13.	kJ/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase

C₆H₄N₂O₄^- + Sulfur hexafluoride = (C₆H₄N₂O₄^- • )

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	<35.6	kJ/mol	IMRB	Chowdhury and Kebarle, 1986	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	<7.95	kJ/mol	IMRB	Chowdhury and Kebarle, 1986	gas phase

C₆H₄N₂O₄^- + Sulfur hexafluoride = (C₆H₄N₂O₄^- • )

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	<35.1	kJ/mol	IMRB	Chowdhury and Kebarle, 1986	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	<7.11	kJ/mol	IMRB	Chowdhury and Kebarle, 1986	gas phase

F₅S^- + Sulfur hexafluoride = (F₅S^- • )

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	<9.62	kJ/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase; No formation at 141 K

+ Sulfur hexafluoride = ( • )

By formula: Cl^- + F₆S = (Cl^- • F₆S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	<7.53	kJ/mol	IMRB	Chowdhury and Kebarle, 1986	gas phase

Henry's Law data

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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)

k°_H (mol/(kg*bar))	d(ln(k_H))/d(1/T) (K)	Method	Reference
0.00024	2400.	L	N/A

Gas phase ion energetics data

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Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
MM - Michael M. Meot-Ner (Mautner)
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
LL - Sharon G. Lias and Joel F. Liebman
B - John E. Bartmess

Quantity	Value	Units	Method	Reference	Comment
IE (evaluated)	15.32 ± 0.02	eV	N/A	N/A	L
Quantity	Value	Units	Method	Reference	Comment
Proton affinity (review)	575.3	kJ/mol	N/A	Hunter and Lias, 1998	HL
Quantity	Value	Units	Method	Reference	Comment
Gas basicity	550.7	kJ/mol	N/A	Hunter and Lias, 1998	HL

Electron affinity determinations

EA (eV)	Method	Reference	Comment
0.910 ± 0.070	N/A	Menk, Das, et al., 2014	B
1.030 ± 0.050	N/A	Troe, Miller, et al., 2012	W4 theory supports this (12KER/MAR) and lower level calculations have flaws; B
1.070 ± 0.070	TDAs	Chen, Wiley, et al., 1994	B
1.15 ± 0.15	Kine	Chen, Shuie, et al., 1988	From the temperature dependence of the API spectra of SF5-/SF6-; B
1.05 ± 0.10	TDEq	Grimsrud, Chowdhury, et al., 1985	ΔGea(423 K) = -29.8 kcal/mol; ΔSea = +13 eu. See also Chowdhury, Heinis, et al., 1986, Bopp, Roscioli, et al., 2007; B
1.39 ± 0.13	Kine	Heneghan and Benson, 1983	B
0.799982	Kine	Lifshitz, 1983	Review: literature consistent with ΔS(act) for detachment = -14 eu; B
1.20 ± 0.30	N/A	Chase Jr., Curnutt, et al., 1982	Literature average; B
0.542052	LPD	Drzaic and Brauman, 1982	B
>0.934931	R-A	Refaey and Franklin, 1978	B
2.60 ± 0.10	ECD	Chen and Chen, 2007	B
2.60 ± 0.10	ECD	Chen and Chen, 2007	B
3.15999	LPD	Datskos, Carter, et al., 1995	Stated electron affinity is the Vertical Detachment Energy; B
>0.698163	ECD	Chen and Wentworth, 1983	B
0.46 ± 0.20	NBIE	Compton, Reinhardt, et al., 1978	B
0.75 ± 0.10	NBIE	Leffert, Tang, et al., 1974	B
0.54 ± 0.17	NBIE	Compton and Cooper, 1973	B
0.53 ± 0.10	NBIE	Compton, Cooper, et al., 1973	B
>0.60 ± 0.10	Endo	Lifshitz, Tiernan, et al., 1973	B
0.95 ± 0.52	IMRB	Fehsenfeld, 1971	B
0.43	IMRB	Lifshitz, Hughes, et al., 1970	B
>0.698163	ECD	Chen, George, et al., 1968	B
1.10002	ES	Compton, Christophorou, et al., 1966	B
0.32 ± 0.15	NBIE	Hubers and Los, 1975	B
1.49 ± 0.22	SI	Kay and Page, 1964	The Magnetron method, lacking mass analysis, is not considered reliable.; B

Gas basicity at 298K

Gas basicity (review) (kJ/mol)	Reference	Comment
575.3	Pepi, Ricci, et al., 2005	T = 298K; PA(SF6) equated to PA(N2O) based on dissociative PT reactions with large entropy changes that may affect the kinetics.; MM

Ionization energy determinations

IE (eV)	Method	Reference	Comment
15.30	PE	Delwiche, 1969	RDSH
15.30	PE	Delwiche, 1969	RDSH
15.35 ± 0.02	PE	Frost, McDowell, et al., 1967	RDSH
15.7	PE	Bieri, Asbrink, et al., 1982	Vertical value; LBLHLM
15.7	PE	Sell and Kupperman, 1978	Vertical value; LLK
15.69	PE	Potts, Lempka, et al., 1970	Vertical value; RDSH
15.81	PE	Delwiche, 1969	Vertical value; RDSH

Appearance energy determinations

Ion	AE (eV)	Other Products	Method	Reference	Comment
F⁺	37.5 ± 1.0	?	EI	Pullen and Stockdale, 1976	LLK
FS⁺	37.6 ± 3.0	?	EI	Pullen and Stockdale, 1976	LLK
FS⁺	30.5 ± 0.5	?	EI	Hildenbrand, 1973	LLK
F₂⁺	18.0 ± 1.0	?	EI	Pullen and Stockdale, 1976	LLK
F₂S⁺	27.0 ± 0.3	?	EI	Pullen and Stockdale, 1976	LLK
F₂S⁺	27.5 ± 0.5	?	EI	Hildenbrand, 1973	LLK
F₃S⁺	18.79 ± 0.14	?	PI	Mitsuke, Suzuki, et al., 1990	LL
F₃S⁺	19.4 ± 0.5	?	PI	Sasanuma, Ishiguro, et al., 1979	LLK
F₃S⁺	19.6 ± 0.5	?	EI	Pullen and Stockdale, 1976	LLK
F₃S⁺	20.0 ± 0.5	?	EI	Hildenbrand, 1973	LLK
SF₃⁺	19.80 ± 0.10	F₂+F?	EI	Delwiche, 1969	RDSH
F₃S⁺	21.5	3F	PE	Delwiche, 1969	RDSH
F₃S⁺	19.8 ± 0.1	F₂+F	PE	Delwiche, 1969	RDSH
F₄S⁺	19.1 ± 0.5	2F	PI	Sasanuma, Ishiguro, et al., 1979	LLK
F₄S⁺	19.6 ± 1.0	2F	EI	Pullen and Stockdale, 1976	LLK
F₄S⁺	18.44 ± 0.10	2F	EI	Hildenbrand, 1973	LLK
F₄S⁺	18.5 ± 0.1	2F	PE	Delwiche, 1969	RDSH
SF₄⁺	18.50 ± 0.10	2F?	EI	Delwiche, 1969	RDSH
F₅S⁺	15.32 ± 0.04	F	PI	Mitsuke, Suzuki, et al., 1990	LL
F₅S⁺	≤13.78	F	IMB	Stone and Wytenberg, 1989	T = 298K; LL
F₅S⁺	13.97 ± 0.04	F	END	Tichy, Javahery, et al., 1987	LBLHLM
F₅S⁺	≤14.4	F	IMB	Shul, Upschulte, et al., 1987	LBLHLM
F₅S⁺	14.62 ± 0.09	F	IMB	Babcock and Streit, 1981	LLK
F₅S⁺	15.3 ± 0.2	F	PI	Sasanuma, Ishiguro, et al., 1979	LLK
F₅S⁺	16.2 ± 0.2	F	EI	Pullen and Stockdale, 1976	LLK
F₅S⁺	≤14.53 ± 0.05	F	PIPECO	Simm, Danby, et al., 1975	LLK
F₅S⁺	15.50 ± 0.10	F	EI	Hildenbrand, 1973	LLK
F₅S⁺	15.75 ± 0.05	F	PE	Delwiche, 1969	RDSH
SF₅⁺	15.75 ± 0.05	F	EI	Delwiche, 1969	RDSH
SF₅⁺	15.29	F	PI	Dibeler and Walker, 1966	RDSH
SF₅⁺	15.85 ± 0.15	F	EI	Fox and Curran, 1961	RDSH
F₅S⁺	15.9 ± 0.2	F	EI	Dibeler and Mohler, 1948	RDSH

Ion clustering data

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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. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

C₆H₄N₂O₄^- + Sulfur hexafluoride = (C₆H₄N₂O₄^- • )

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	<35.6	kJ/mol	IMRB	Chowdhury and Kebarle, 1986	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	<7.95	kJ/mol	IMRB	Chowdhury and Kebarle, 1986	gas phase

C₆H₄N₂O₄^- + Sulfur hexafluoride = (C₆H₄N₂O₄^- • )

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	<35.1	kJ/mol	IMRB	Chowdhury and Kebarle, 1986	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	<7.11	kJ/mol	IMRB	Chowdhury and Kebarle, 1986	gas phase

+ Sulfur hexafluoride = ( • )

By formula: Cl^- + F₆S = (Cl^- • F₆S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	<7.53	kJ/mol	IMRB	Chowdhury and Kebarle, 1986	gas phase

+ Sulfur hexafluoride = ( • )

By formula: F^- + F₆S = (F^- • F₆S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	22.6 ± 1.3	kJ/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-3. ± 13.	kJ/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase

( • Sulfur hexafluoride ) + = ( • 2)

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	16.7 ± 1.3	kJ/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase; Entropy estimated. Gaff = +1.4 at 141 K
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-5.9 ± 1.3	kJ/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase; Entropy estimated. Gaff = +1.4 at 141 K

F₅S^- + Sulfur hexafluoride = (F₅S^- • )

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	<9.62	kJ/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase; No formation at 141 K

F₆S^- + Sulfur hexafluoride = (F₆S^- • )

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.6 ± 1.3	kJ/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase; Entropy estimated. Gaff=+0.37 at 141K
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-13.0 ± 1.3	kJ/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase; Entropy estimated. Gaff=+0.37 at 141K

IR Spectrum

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

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

Gas Chromatography

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

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

View large format table.

Column type	Active phase	I	Reference	Comment
Capillary	SPB-1	135.	Flanagan, Streete, et al., 1997	60. m/0.53 mm/5. μm, He; Program: 40C(6min) => 5C/min => 80C => 10C/min => 200C
Capillary	SPB-1	135.	Strete, Ruprah, et al., 1992	60. m/0.53 mm/5.0 μm, Helium; Program: 40 0C (6 min) 5 0C/min -> 80 0C 10 0C/min -> 200 0C

References

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
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Notes

Symbols used in this document:

AE	Appearance energy
EA	Electron affinity
IE (evaluated)	Recommended ionization energy
P_c	Critical pressure
S°_{gas,1 bar}	Entropy of gas at standard conditions (1 bar)
T_boil	Boiling point
T_c	Critical temperature
T_triple	Triple point temperature
V_c	Critical volume
d(ln(k_H))/d(1/T)	Temperature dependence parameter for Henry's Law constant
k°_H	Henry's Law constant at 298.15K
Δ_fH°_gas	Enthalpy of formation of gas at standard conditions
Δ_rG°	Free energy of reaction at standard conditions
Δ_rH°	Enthalpy of reaction at standard conditions
Δ_subH	Enthalpy of sublimation
ρ_c	Critical density

Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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