Perfluoropropane
- Formula: C3F8
- Molecular weight: 188.0193
- IUPAC Standard InChIKey: QYSGYZVSCZSLHT-UHFFFAOYSA-N
- 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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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -1784.7 ± 8.8 | kJ/mol | Ccb | Kolesov, Talakin, et al., 1967 | Reanalyzed by Kolesov and Kozina, 1986, Original value = -1729. kJ/mol |
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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
S°liquid | 287.23 | J/mol*K | N/A | Pace and Plaush, 1967 |
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
181.38 | 235. | Pace and Plaush, 1967 | T = 14 to 236 K. |
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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 234. | K | N/A | PCR Inc., 1990 | BS |
Tboil | 237.2 | K | N/A | Weast and Grasselli, 1989 | BS |
Tboil | 235. | K | N/A | Streng, 1971 | Uncertainty assigned by TRC = 2. K; TRC |
Tboil | 236.5 | K | N/A | Gilmour, Zwicker, et al., 1967 | Uncertainty assigned by TRC = 0.5 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 90. | K | N/A | Streng, 1971 | Uncertainty assigned by TRC = 2. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 124.85 | K | N/A | Crowder, Taylor, et al., 1967 | Uncertainty assigned by TRC = 0.3 K; TRC |
Ttriple | 125.45 | K | N/A | Pace and Plaush, 1967 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.02 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 345.1 | K | N/A | Leu and Robinson, 1992 | Uncertainty assigned by TRC = 0.5 K; TRC |
Tc | 345.03 | K | N/A | Mousa, Kay, et al., 1972 | Uncertainty assigned by TRC = 0.2 K; TRC |
Tc | 345.05 | K | N/A | Brown, 1963 | Uncertainty assigned by TRC = 0.3 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 26.75 | bar | N/A | Leu and Robinson, 1992 | Uncertainty assigned by TRC = 0.10 bar; TRC |
Pc | 61.839 | bar | N/A | Mousa, Kay, et al., 1972 | Uncertainty assigned by TRC = 0.064 bar; TRC |
Pc | 26.8005 | bar | N/A | Brown, 1963 | Uncertainty assigned by TRC = 0.2026 bar; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 3.21 | mol/l | N/A | Mousa, Kay, et al., 1972 | Uncertainty assigned by TRC = 0.0320 mol/l; TRC |
ρc | 3.34 | mol/l | N/A | Brown, 1963 | Uncertainty assigned by TRC = 0.11 mol/l; TRC |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
19.761 | 236.42 | N/A | Pace and Plaush, 1967 | P = 101.325 kPa; DH |
21.6 | 222. | A | Stephenson and Malanowski, 1987 | Based on data from 193. to 237. K. See also Pace, 1967.; AC |
20.9 | 244. | N/A | Brown, 1963, 2 | Based on data from 213. to 259. K.; AC |
Entropy of vaporization
ΔvapS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
83.58 | 236.42 | Pace and Plaush, 1967 | P; DH |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
193.78 to 236.81 | 4.08856 | 842.613 | -30.023 | Pace and Plaush, 1967 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
0.48 | 125.5 | Domalski and Hearing, 1996 | AC |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
35.77 | 99.4 | Domalski and Hearing, 1996 | CAL |
3.81 | 125.5 |
Enthalpy of phase transition
ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
3.5556 | 99.39 | crystaline, II | crystaline, I | Pace and Plaush, 1967 | DH |
0.4774 | 125.45 | crystaline, I | liquid | Pace and Plaush, 1967 | DH |
Entropy of phase transition
ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
35.77 | 99.39 | crystaline, II | crystaline, I | Pace and Plaush, 1967 | DH |
3.81 | 125.45 | crystaline, I | liquid | Pace and Plaush, 1967 | DH |
Reaction thermochemistry data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, 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: 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
By formula: 8Na + C3F8 = 3C + 8FNa
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -2761. ± 7.1 | kJ/mol | Ccb | Kolesov, Talakin, et al., 1967 | gas phase |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, 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
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, References
- 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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