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Ethane, pentafluoro-

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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
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil227. ± 6.KAVGN/AAverage of 11 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus170.KN/AYoung, Fukuhara, et al., 1940Uncertainty assigned by TRC = 3. K; TRC
Quantity Value Units Method Reference Comment
Tc339.22KN/AYata, Hori, et al., 1996Uncertainty assigned by TRC = 0.3 K; TRC
Tc339.160KN/AKuwabara, Aoyama, et al., 1995Uncertainty assigned by TRC = 0.04 K; TRC
Tc339.17KN/AHigashi, 1994Uncertainty assigned by TRC = 0.03 K; TRC
Tc339.4KN/AWilson, Wilding, et al., 1992Uncertainty assigned by TRC = 0.7 K; TRC
Quantity Value Units Method Reference Comment
Pc36.29barN/ATsvetkov, Kletskii, et al., 1995Uncertainty assigned by TRC = 0.06 bar; by extrapolation of obs. vapor pressure to selected Tc; TRC
Pc36.199barN/AYe, Sato, et al., 1995Uncertainty assigned by TRC = 0.03 bar; calc. from vapor pressure equation fit to data at selected Tc(339.165 K); TRC
Pc36.20barN/AHigashi, 1994Uncertainty assigned by TRC = 0.07 bar; TRC
Pc36.19barN/ASagawa, Sato, et al., 1994Uncertainty assigned by TRC = 0.05 bar; Calculated from vapor pressure curve for Tc = 339.165 K; TRC
Pc35.19barN/AWilson, Wilding, et al., 1992Uncertainty assigned by TRC = 1.50 bar; by extrapoltion of vapor pressure equation to Tc; TRC
Quantity Value Units Method Reference Comment
rhoc4.73mol/lN/AKuwabara, Aoyama, et al., 1995Uncertainty assigned by TRC = 0.02 mol/l; TRC
rhoc4.7658mol/lN/AHigashi, 1994Uncertainty assigned by TRC = 0.05 mol/l; TRC
rhoc4.757mol/lN/AWilson, Wilding, et al., 1992Uncertainty assigned by TRC = 0.07 mol/l; TRC

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
22.8175.CWeber, 1999AC
21.9190.CWeber, 1999AC
20.9205.CWeber, 1999AC
20.3215.CWeber, 1999AC

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Reference Comment
2.25172.6L«65533»ddecke and Magee, 1996AC

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 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:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
ALS - 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

Chlorine anion + Ethane, pentafluoro- = (Chlorine anion bullet Ethane, pentafluoro-)

By formula: Cl- + C2HF5 = (Cl- bullet C2HF5)

Quantity Value Units Method Reference Comment
Deltar78.7 ± 8.4kJ/molIMRELarson and McMahon, 1984gas phase; B,M
Quantity Value Units Method Reference Comment
Deltar97.5J/mol*KN/ALarson and McMahon, 1984, 2gas phase; switching reaction(Cl-)t-C4H9OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M
Quantity Value Units Method Reference Comment
Deltar49.4 ± 8.4kJ/molIMRELarson and McMahon, 1984gas phase; B,M

Fluorine anion + Ethane, pentafluoro- = (Fluorine anion bullet Ethane, pentafluoro-)

By formula: F- + C2HF5 = (F- bullet C2HF5)

Quantity Value Units Method Reference Comment
Deltar127. ± 8.4kJ/molIMRELarson and McMahon, 1983gas phase; B,M
Quantity Value Units Method Reference Comment
Deltar111.J/mol*KN/ALarson and McMahon, 1983gas phase; switching reaction(F-)H2O, Entropy change calculated or estimated; Arshadi, Yamdagni, et al., 1970; M
Quantity Value Units Method Reference Comment
Deltar94.1 ± 8.4kJ/molIMRELarson and McMahon, 1983gas phase; B,M

C2F5- + Hydrogen cation = Ethane, pentafluoro-

By formula: C2F5- + H+ = C2HF5

Quantity Value Units Method Reference Comment
Deltar1567. ± 14.kJ/molG+TSSullivan and Beauchamp, 1976gas phase; Between tBuOH and HF; value altered from reference due to change in acidity scale; B
Quantity Value Units Method Reference Comment
Deltar1535. ± 13.kJ/molIMRBSullivan and Beauchamp, 1976gas phase; Between tBuOH and HF; value altered from reference due to change in acidity scale; B

Ethane, 2-chloro-1,1,1,2-tetrafluoro- + hydrogen fluoride = Ethane, pentafluoro- + Hydrogen chloride

By formula: C2HClF4 + HF = C2HF5 + HCl

Quantity Value Units Method Reference Comment
Deltar-10.5 ± 6.3kJ/molKinCoulson, 1993gas phase; solvent: On solid catalyst; ALS

Gas phase ion energetics 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: John E. Bartmess

De-protonation reactions

C2F5- + Hydrogen cation = Ethane, pentafluoro-

By formula: C2F5- + H+ = C2HF5

Quantity Value Units Method Reference Comment
Deltar1567. ± 14.kJ/molG+TSSullivan and Beauchamp, 1976gas phase; Between tBuOH and HF; value altered from reference due to change in acidity scale
Quantity Value Units Method Reference Comment
Deltar1535. ± 13.kJ/molIMRBSullivan and Beauchamp, 1976gas phase; Between tBuOH and HF; value altered from reference due to change in acidity scale

Ion clustering data

Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), Site Links, NIST Free Links, 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:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

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

Chlorine anion + Ethane, pentafluoro- = (Chlorine anion bullet Ethane, pentafluoro-)

By formula: Cl- + C2HF5 = (Cl- bullet C2HF5)

Quantity Value Units Method Reference Comment
Deltar78.7 ± 8.4kJ/molIMRELarson and McMahon, 1984gas phase; B,M
Quantity Value Units Method Reference Comment
Deltar97.5J/mol*KN/ALarson and McMahon, 1984, 2gas phase; switching reaction(Cl-)t-C4H9OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M
Quantity Value Units Method Reference Comment
Deltar49.4 ± 8.4kJ/molIMRELarson and McMahon, 1984gas phase; B,M

Fluorine anion + Ethane, pentafluoro- = (Fluorine anion bullet Ethane, pentafluoro-)

By formula: F- + C2HF5 = (F- bullet C2HF5)

Quantity Value Units Method Reference Comment
Deltar127. ± 8.4kJ/molIMRELarson and McMahon, 1983gas phase; B,M
Quantity Value Units Method Reference Comment
Deltar111.J/mol*KN/ALarson and McMahon, 1983gas phase; switching reaction(F-)H2O, Entropy change calculated or estimated; Arshadi, Yamdagni, et al., 1970; M
Quantity Value Units Method Reference Comment
Deltar94.1 ± 8.4kJ/molIMRELarson and McMahon, 1983gas phase; B,M

IR Spectrum

Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Mass spectrum (electron ionization), Site Links, NIST Free Links, References, Notes

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


Mass spectrum (electron ionization)

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

Spectrum

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Additional Data

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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.
Origin T.J. Bruno, Cent. Chem. Technol., NIST, Boulder, CO 80303, USA
NIST MS number 142366

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References

Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), Site Links, NIST Free Links, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Young, Fukuhara, et al., 1940
Young, D.W.S.; Fukuhara, N.; Bigelow, L.A., The Action of Elementary Fluorine Upon Organic Compounds VIII. The Influence of Dilution on the Vapor Phase Fluorination of Ethane, J. Am. Chem. Soc., 1940, 62, 1171. [all data]

Yata, Hori, et al., 1996
Yata, J.; Hori, M.; Kawakatsu, H.; Minamiyama, T., Measurements of refractive index of alternative refrigerants, Int. J. Thermophys., 1996, 17, 65-74. [all data]

Kuwabara, Aoyama, et al., 1995
Kuwabara, S.; Aoyama, H.; Sato, H.; Watanabe, K., Vapor-liquid coexistence curves in the critical region and the critical temperatures and densities of difluoromethane and pentafluoroehtane, J. Chem. Eng. Data, 1995, 40, 112-116. [all data]

Higashi, 1994
Higashi, Y., Critical parameters for HFC134a, HFC32 and HFC125, Int. J. Refrig., 1994, 17, 524-531. [all data]

Wilson, Wilding, et al., 1992
Wilson, L.C.; Wilding, W.V.; Wilson, G.M.; Rowley, R.L.; Felix, V.M.; Chisolm-Carter, T., Thermophysical properties of HFC-125, Fluid Phase Equilib., 1992, 80, 167-77. [all data]

Tsvetkov, Kletskii, et al., 1995
Tsvetkov, O.B.; Kletskii, A.V.; Laptev, Yu.A.; Asambaev, A.J.; Zausaev, I.A., Thermal conductivity and PVT measurements of pentafluoroethane ( refrigerant HFC-125), Int. J. Thermophys., 1995, 16, 1185-92. [all data]

Ye, Sato, et al., 1995
Ye, F.; Sato, H.; Watanabe, K., Gas-phase PVT properties and vapor pressure of pentafluoroethane (HFC-125) determined according to the burnett method, J. Chem. Eng. Data, 1995, 40, 148-152. [all data]

Sagawa, Sato, et al., 1994
Sagawa, T.; Sato, H.; Watanabe, K., Thermodynamic properties of HFC-125 based on (p,V,T) measurements, High Temp. - High Pressures, 1994, 26, 193-201. [all data]

Weber, 1999
Weber, F., Measurement of the specific enthalpy of vaporization of the alternative refrigerant pentafluoroethane in the temperature range from 175 K to 220 K, PTB-Mitteilungen, 1999, 109, 6, 469. [all data]

L«65533»ddecke and Magee, 1996
L«65533»ddecke, T.O.; Magee, J.W., Molar heat capacity at constant volume of difluoromethane (R32) and pentafluoroethane (R125) from the triple-point temperature to 345 K at pressures to 35 MPa, Int J Thermophys, 1996, 17, 4, 823-849, https://doi.org/10.1007/BF01439192 . [all data]

Larson and McMahon, 1984
Larson, J.W.; McMahon, T.B., Hydrogen bonding in gas phase anions. An experimental investigation of the interaction between chloride ion and bronsted acids from ICR chloride exchange equilibria, J. Am. Chem. Soc., 1984, 106, 517. [all data]

Larson and McMahon, 1984, 2
Larson, J.W.; McMahon, T.B., Gas phase negative ion chemistry of alkylchloroformates, Can. J. Chem., 1984, 62, 675. [all data]

French, Ikuta, et al., 1982
French, M.A.; Ikuta, S.; Kebarle, P., Hydrogen bonding of O-H and C-H hydrogen donors to Cl-. Results from mass spectrometric measurement of the ion-molecule equilibria RH + Cl- = RHCl-, Can. J. Chem., 1982, 60, 1907. [all data]

Larson and McMahon, 1983
Larson, J.W.; McMahon, T.B., Strong hydrogen bonding in gas-phase anions. An ion cyclotron resonance determination of fluoride binding energetics to bronsted acids from gas-phase fluoride exchange equilibria measurements, J. Am. Chem. Soc., 1983, 105, 2944. [all data]

Arshadi, Yamdagni, et al., 1970
Arshadi, M.; Yamdagni, R.; Kebarle, P., Hydration of Halide Negative Ions in the Gas Phase. II. Comparison of Hydration Energies for the Alkali Positive and Halide Negative Ions, J. Phys. Chem., 1970, 74, 7, 1475, https://doi.org/10.1021/j100702a014 . [all data]

Sullivan and Beauchamp, 1976
Sullivan, S.A.; Beauchamp, J.L., Competition between proton transfer and elimination in the reactions of strong bases with fluoroethanes in the gas phase. Influence of base strength on reactivity, J. Am. Chem. Soc., 1976, 98, 1160. [all data]

Coulson, 1993
Coulson, D.R., Kinetics of the fluorination/chlorination of 1-chloro-1,2,2,2-tetrafluoroethane, J. Catal., 1993, 142, 289-302. [all data]


Notes

Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), Site Links, NIST Free Links, References