Pentane, dodecafluoro-
- Formula: C5F12
- Molecular weight: 288.0343
- IUPAC Standard InChIKey: NJCBUSHGCBERSK-UHFFFAOYSA-N
- CAS Registry Number: 678-26-2
- 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: Dodecafluoropentane; Perfluoro-n-pentane; Perfluoropentane; n-Perfluoropentane
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Condensed phase thermochemistry data
Go To: Top, Phase change data, Mass spectrum (electron ionization), 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: Eugene S. Domalski and Elizabeth D. Hearing
Constant pressure heat capacity of liquid
Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
45.00 | 293. | Campos-Vallette and Diaz, 1983 | Interpolated data. |
Phase change data
Go To: Top, Condensed phase thermochemistry data, Mass spectrum (electron ionization), 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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 302.6 | K | N/A | PCR Inc., 1990 | BS |
Tboil | 303.2 | K | N/A | Weast and Grasselli, 1989 | BS |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 148.35 | K | N/A | Crowder, Taylor, et al., 1967 | Uncertainty assigned by TRC = 0.3 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 421.9 | K | N/A | Ermakov and Skripov, 1967 | Uncertainty assigned by TRC = 0.5 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 6.36 | kcal/mol | N/A | Boublik, Fried, et al., 1984 | Based on data from 280. to 340. K. See also Basarová and Svoboda, 1991.; AC |
ΔvapH° | 6.57 | kcal/mol | N/A | Barber and Cady, 1956 | Based on data from 288. to 338. K.; AC |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
7.43 | 236. | A | Stephenson and Malanowski, 1987 | Based on data from 221. to 303. K. See also Crowder, Taylor, et al., 1967, 2.; AC |
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 |
---|---|---|---|---|---|
221.17 to 303.00 | 4.29645 | 1130.731 | -38.982 | Crowder, Taylor, et al., 1967, 2 | Coefficents calculated by NIST from author's data. |
300. to 421.9 | 4.37852 | 1257.758 | -13.231 | Ermakov and Skripov, 1967, 2 | Coefficents calculated by NIST from author's data. |
282.82 to 337.94 | 4.2006 | 1103.454 | -39.77 | Barber and Cady, 1956 | Coefficents calculated by NIST from author's data. |
Enthalpy of sublimation
ΔsubH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
10.4 | 145. | Bondi, 1963 | See also Burger and Cady, 1951 and Barber and Cady, 1956.; AC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
1.6 | 147.8 | Burger and Cady, 1951 | AC |
Mass spectrum (electron ionization)
Go To: Top, 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
Due to licensing restrictions, this spectrum cannot be downloaded.
Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
NIST MS number | 13898 |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Campos-Vallette and Diaz, 1983
Campos-Vallette, M.; Diaz, F.G.,
Some physical and thermodynamic properties of n-CnF2n+2 compounds with n = 4-8,
Semina (Londrian Braz.), 1983, 4(14), 405-409. [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]
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]
Ermakov and Skripov, 1967
Ermakov, G.V.; Skripov, V.P.,
Saturation Line, Critical Parameters, and Attainable Superheating of the Perfluoroparaffins,
Russ. J. Phys. Chem. (Engl. Transl.), 1967, 41, 39-43. [all data]
Boublik, Fried, et al., 1984
Boublik, T.; Fried, V.; Hala, E.,
The Vapour Pressures of Pure Substances: Selected Values of the Temperature Dependence of the Vapour Pressures of Some Pure Substances in the Normal and Low Pressure Region, 2nd ed., Elsevier, New York, 1984, 972. [all data]
Basarová and Svoboda, 1991
Basarová, Pavlína; Svoboda, Václav,
Calculation of heats of vaporization of halogenated hydrocarbons from saturated vapour pressure data,
Fluid Phase Equilibria, 1991, 68, 13-34, https://doi.org/10.1016/0378-3812(91)85008-I
. [all data]
Barber and Cady, 1956
Barber, Eugene John; Cady, George H.,
Vapor Pressures of Perfluoropentanes,
J. Phys. Chem., 1956, 60, 4, 504-505, https://doi.org/10.1021/j150538a030
. [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]
Crowder, Taylor, et al., 1967, 2
Crowder, Gene A.; Taylor, Zelma Lowell; Reed, Thomas McKennan; Young, John Adams,
Vapor pressures and triple point temperatures for several pure fluorocarbons,
J. Chem. Eng. Data, 1967, 12, 4, 481-485, https://doi.org/10.1021/je60035a005
. [all data]
Ermakov and Skripov, 1967, 2
Ermakov, H.V.; Skripov, V.P.,
Saturation Line Critical Parameters and Reachable Overheat of Perfluoroparaffins,
Zh. Fiz. Khim., 1967, 41, 1, 77-81. [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]
Burger and Cady, 1951
Burger, Leland L.; Cady, George H.,
Physical Properties of Perfluoropentanes 1a,
J. Am. Chem. Soc., 1951, 73, 9, 4243-4246, https://doi.org/10.1021/ja01153a061
. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid Tboil Boiling point Tc Critical temperature Ttriple Triple point temperature ΔfusH Enthalpy of fusion ΔsubH Enthalpy of sublimation ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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