2,2-Bis(fluoromethyl)-1,3-difluoropropane
- Formula: C5H8F4
- Molecular weight: 144.1106
- IUPAC Standard InChIKey: ACBHFORVXDMTHO-UHFFFAOYSA-N
- CAS Registry Number: 338-23-8
- Chemical structure:
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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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tfus | 362. | K | N/A | Murrill, Whitehead, et al., 1972 | Crystal phase 1 phase; Uncertainty assigned by TRC = 1. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 367.06 | K | N/A | Trowbridge and Westrum, 1964 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.01 K; TRC |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
5.14 | 367.4 | Domalski and Hearing, 1996 | AC |
Enthalpy of phase transition
ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
5.142 | 367.43 | crystaline, I | liquid | Trowbridge and Westrum, 1964, 2 | DH |
13.210 | 249.40 | crystaline, II | crystaline, I | Westrum, 1959 | Lambda transition, no details.; DH |
Entropy of phase transition
ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
13.99 | 367.43 | crystaline, I | liquid | Trowbridge and Westrum, 1964, 2 | DH |
53.0 | 249.40 | crystaline, II | crystaline, I | Westrum, 1959 | Lambda; DH |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Murrill, Whitehead, et al., 1972
Murrill, E.; Whitehead, M.E.; Breed, L.,
Solid-solid phase transition determined by differential scanning calori- meter,
Thermochim. Acta, 1972, 3, 311. [all data]
Trowbridge and Westrum, 1964
Trowbridge, J.C.; Westrum, E.F.,
Heat capacities and thermodynamic properties of globular molecules X. Fusion of pentaerythrityl fluoride,
J. Phys. Chem., 1964, 68, 255-8. [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]
Trowbridge and Westrum, 1964, 2
Trowbridge, J.C.; Westrum, E.F., Jr.,
Heat capacities and thermodynamic properties of globular molecules. X. Fusion of pentaerythrityl fluoride,
J. Phys. Chem., 1964, 68, 255-258. [all data]
Westrum, 1959
Westrum, E.F., Jr.,
Ordering transitions in symmetrical molecules, Symp. Thermodynam. Fritens-Wattens,
Tirol Austria, 1959, No.36, 11p. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Tfus Fusion (melting) point Ttriple Triple point temperature ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔfusH Enthalpy of fusion - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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