Tetrafluoromethane

Formula: CF₄
Molecular weight: 88.0043
IUPAC Standard InChI: InChI=1S/CF4/c2-1(3,4)5
IUPAC Standard InChIKey: TXEYQDLBPFQVAA-UHFFFAOYSA-N
CAS Registry Number: 75-73-0
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: Carbon tetrafluoride; Methane, tetrafluoro-; Arcton 0; Carbon fluoride (CF4); Freon 14; FC 14; Perfluoromethane; CF4; Halon 14; Carbon fluoride; F 14; Halocarbon 14; R 14; UN 1982; Refrigerant 14; CFC 14; R 14 (Refrigerant); Refrigerant R 14; Methane, tetrafluo-
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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
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

Quantity	Value	Units	Method	Reference	Comment
T_boil	145.1 ± 0.2	K	AVG	N/A	Average of 9 values; Individual data points
Quantity	Value	Units	Method	Reference	Comment
T_fus	89.	K	N/A	Streng, 1971	Uncertainty assigned by TRC = 1.5 K; TRC
T_fus	89.5	K	N/A	Thorp and Scott, 1956	Uncertainty assigned by TRC = 0.5 K; TRC
T_fus	86.85	K	N/A	Ruff and Keim, 1930	Uncertainty assigned by TRC = 1. K; TRC
Quantity	Value	Units	Method	Reference	Comment
T_triple	89.4 ± 0.8	K	AVG	N/A	Average of 7 values; Individual data points
Quantity	Value	Units	Method	Reference	Comment
T_c	227.5	K	N/A	Altunin, Geller, et al., 1987	Uncertainty assigned by TRC = 0.1 K; TRC
T_c	227.5	K	N/A	Chari, 1960	Uncertainty assigned by TRC = 0.02 K; TRC
Quantity	Value	Units	Method	Reference	Comment
P_c	36.96	atm	N/A	Altunin, Geller, et al., 1987	Uncertainty assigned by TRC = 0.099 atm; TRC
Quantity	Value	Units	Method	Reference	Comment
V_c	0.142	l/mol	N/A	Terry, Lynch, et al., 1969	Uncertainty assigned by TRC = 800. l/mol; TRC
Quantity	Value	Units	Method	Reference	Comment
ρ_c	7.155	mol/l	N/A	Altunin, Geller, et al., 1987	Uncertainty assigned by TRC = 0.01 mol/l; TRC

Enthalpy of vaporization

Δ_vapH (kcal/mol)	Temperature (K)	Method	Reference	Comment
2.8236	145.12	N/A	Smith and Pace, 1969	P = 101.325 kPa.; DH
2.89	212.	A	Stephenson and Malanowski, 1987	Based on data from 195. to 227. K.; AC
2.94	148.	A	Stephenson and Malanowski, 1987	Based on data from 89. to 163. K.; AC
2.84	182.	A	Stephenson and Malanowski, 1987	Based on data from 160. to 197. K.; AC
2.96	131.	N/A	Smith and Pace, 1969	Based on data from 116. to 146. K.; AC
3.06	131.	N/A	Menzel and Mohry, 1933	Based on data from 93. to 146. K. See also Stephenson and Malanowski, 1987.; AC

Entropy of vaporization

Δ_vapS (cal/mol*K)	Temperature (K)	Reference	Comment
19.46	145.12	Smith and Pace, 1969	P; DH

Antoine Equation Parameters

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

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Temperature (K)	A	B	C	Reference	Comment
121.59 to 135.39	3.31456	376.716	-31.901	Regnier, 1972	Coefficents calculated by NIST from author's data.
89.71 to 101.46	0.62910	103.578	-61.461	Smith and Pace, 1969	Coefficents calculated by NIST from author's data.
92.51 to 145.87	4.1625	556.616	-11.43	Menzel and Mohry, 1933	Coefficents calculated by NIST from author's data.

Enthalpy of sublimation

Δ_subH (kcal/mol)	Temperature (K)	Method	Reference	Comment
3.51	88.	N/A	Simon, Knobler, et al., 1967	Based on data from 86. to 89. K.; AC
4.06	76.	N/A	Bondi, 1963	AC
3.35	83.	A	Menzel and Mohry, 1933	Based on data from 80. to 86. K.; AC

Enthalpy of fusion

Δ_fusH (kcal/mol)	Temperature (K)	Reference	Comment
0.17	89.56	Domalski and Hearing, 1996	AC

Entropy of fusion

Δ_fusS (cal/mol*K)	Temperature (K)	Reference	Comment
5.361	76.27	Domalski and Hearing, 1996	CAL
1.90	89.56
5.11	76.1
1.8	88.4
4.59	76.1
1.9	89.5

Enthalpy of phase transition

ΔH_trs (kcal/mol)	Temperature (K)	Initial Phase	Final Phase	Reference	Comment
0.34950	76.09	crystaline, II	crystaline, I	Enokida, Shinoda, et al., 1969	DH
0.1686	89.529	crystaline, I	liquid	Enokida, Shinoda, et al., 1969	DH
0.40851	76.27	crystaline, II	crystaline, I	Smith and Pace, 1969	DH
0.1702	89.56	crystaline, I	liquid	Smith and Pace, 1969	DH
0.41451	76.09	crystaline, II	crystaline, I	Kostryukov, Samorukov, et al., 1958	DH
0.16580	88.44	crystaline, I	liquid	Kostryukov, Samorukov, et al., 1958	DH

Entropy of phase transition

ΔS_trs (cal/mol*K)	Temperature (K)	Initial Phase	Final Phase	Reference	Comment
4.589	76.09	crystaline, II	crystaline, I	Enokida, Shinoda, et al., 1969	DH
1.88	89.529	crystaline, I	liquid	Enokida, Shinoda, et al., 1969	DH
5.356	76.27	crystaline, II	crystaline, I	Smith and Pace, 1969	DH
1.90	89.56	crystaline, I	liquid	Smith and Pace, 1969	DH
5.110	76.09	crystaline, II	crystaline, I	Kostryukov, Samorukov, et al., 1958	DH
1.85	88.44	crystaline, I	liquid	Kostryukov, Samorukov, et al., 1958	DH

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:

References

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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]

Thorp and Scott, 1956
Thorp, N.; Scott, R.L., Fluorocarbon solutions at low termperatures. I. The liquid mixtures CF4-CHF3, CF4-CH4, CF4-Kr, CH4-Kr., J. Phys. Chem., 1956, 60, 670. [all data]

Ruff and Keim, 1930
Ruff, O.; Keim, R., The reaction products of carbon with fluorine: I. Tetrafluoromethane., Z. Anorg. Allg. Chem., 1930, 192, 249. [all data]

Altunin, Geller, et al., 1987
Altunin, V.V.; Geller, V.Z.; Kremenvskaya, E.A.; Perel'shtein, I.I.; Petrov, E.K., Thermophysical Properties of Freons, Methane Ser. Part 2, Vol. 9, NSRDS-USSR, Selover, T. B., Ed., Hemisphere, New York, 1987. [all data]

Chari, 1960
Chari, N.C., Thermodynamic Properties of Carbon Tetrafluoride., Ph.D. Dissertation, Univ. Mich., Ann Arbour, MI, 1960. [all data]

Terry, Lynch, et al., 1969
Terry, M.J.; Lynch, J.T.; Bunclark, M.; Mansell, K.R.; Staveley, L.A.K., The Densities of Liquid Argon, Krypton, Xenon, Oxygen, Nitrogen, Carbon Monoxide, Methane and Carbon Tetrafluoride Along the Orthobaric Liquid Curve, J. Chem. Thermodyn., 1969, 1, 413. [all data]

Smith and Pace, 1969
Smith, J.H.; Pace, E.L., The thermodynamic properties of carbon tetrafluoride from 12°K to its boiling point. The significance of the parameter {nu}, J. Phys. Chem., 1969, 73, 4232-4236. [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]

Menzel and Mohry, 1933
Menzel, Walter; Mohry, Friedrich, Die Dampfdrucke des CF4 und NF3 und der Tripelpunkt des CF4, Z. Anorg. Allg. Chem., 1933, 210, 3, 257-263, https://doi.org/10.1002/zaac.19332100305 . [all data]

Regnier, 1972
Regnier, J., Tension de Vapeur de L'Ethane Entre 80 et 135 K, J. Chim. Phys., 1972, 69, 942-944. [all data]

Simon, Knobler, et al., 1967
Simon, M.; Knobler, C.M.; Duncan, A.G., The vapour pressure of tetrafluoromethane from 86 to 146° K, Cryogenics, 1967, 7, 1-4, 138-140, https://doi.org/10.1016/S0011-2275(67)80053-5 . [all data]

Bondi, 1963
Bondi, A., Heat of Siblimation of Molecular Crystals: A Catalog of Molecular Structure Increments., J. Chem. Eng. Data, 1963, 8, 3, 371-381, https://doi.org/10.1021/je60018a027 . [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]

Enokida, Shinoda, et al., 1969
Enokida, H.; Shinoda, T.; Mashiko, Y., Thermodynamic properties of carbon tetrafluoride from 40°K to its melting point, Bull. Chem. Soc. Japan, 1969, 42, 3415-3421. [all data]

Kostryukov, Samorukov, et al., 1958
Kostryukov, V.N.; Samorukov, O.P.; Strelkov, P.G., Thermodynamic studies at low temperatures VII. Phase transitions in solid BF₃, CF₄ and SiF₄, Zhur. Fiz. Khim., 1958, 32, 1354-1361. [all data]

Notes

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Symbols used in this document:

P_c	Critical pressure
T_boil	Boiling point
T_c	Critical temperature
T_fus	Fusion (melting) point
T_triple	Triple point temperature
V_c	Critical volume
ΔH_trs	Enthalpy of phase transition
ΔS_trs	Entropy of phase transition
Δ_fusH	Enthalpy of fusion
Δ_fusS	Entropy of fusion
Δ_subH	Enthalpy of sublimation
Δ_vapH	Enthalpy of vaporization
Δ_vapS	Entropy of vaporization
ρ_c	Critical density

Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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