Tetrahydrofuran clathrate hydrate
- Formula: C4H8O·H34O17
- Molecular weight: 378.3655
- CAS Registry Number: 18879-05-5
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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 | 1298.7 | J/mol*K | N/A | Yamamuro, Oguni, et al., 1988 |
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
1523.2 | 298.15 | Yamamuro, Oguni, et al., 1988 | T = 12 to 300 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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tfus | 277.3 | K | N/A | Handa, 1985 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.1 K; TRC |
Tfus | 277.4 | K | N/A | Leaist, Murray, et al., 1982 | Uncertainty assigned by TRC = 0.4 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 277.4 | K | N/A | Yamamuro, Oguni, et al., 1988, 2 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.1 K; TRC |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
96.980 | 277.4 | Yamamuro, Oguni, et al., 1988 | DH |
99.100 | 277.3 | Handa, 1985, 2 | DH |
98.999 | 277.3 | Handa, Hawkins, et al., 1984 | DH |
98.000 | 277.4 | Leaist, Murray, et al., 1982, 2 | DH |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
349.6 | 277.4 | Yamamuro, Oguni, et al., 1988 | DH |
357.4 | 277.3 | Handa, 1985, 2 | DH |
353.2 | 277.4 | Leaist, Murray, et al., 1982, 2 | DH |
Temperature of phase transition
Ttrs (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|
85. | crystaline, II | crystaline, I | Yamamuro, Oguni, et al., 1988 | Glass transition.; DH |
References
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Yamamuro, Oguni, et al., 1988
Yamamuro, O.; Oguni, M.; Matsuo, T.; Suga, H.,
Calorimetric study of pure and KOH-doped tetrahydrofuran clathrate hydrate,
J. Phys. Chem Solids, 1988, 49, 425-434. [all data]
Handa, 1985
Handa, Y.P.,
Heat capacities in the ranges 95 to 260 k and enthalpies of fusion for structure-II clathrate hydrates of some cyclic ethers,
J. Chem. Thermodyn., 1985, 17, 201-8. [all data]
Leaist, Murray, et al., 1982
Leaist, D.G.; Murray, J.J.; Post, M.L.; Davidson, D.W.,
Enthalpies of decomposition and heat capacities of ethylene oxide and tetrahydrofuran hydrates,
J. Phys. Chem., 1982, 86, 4175. [all data]
Yamamuro, Oguni, et al., 1988, 2
Yamamuro, O.; Oguni, M.; Matsuo, T.; Suga, H.,
Calorimetric study of pure and koh-doped tetrahydrofuran clathrate hydrate.,
J. Phys. Chem. Solids, 1988, 49, 425. [all data]
Handa, 1985, 2
Handa, Y.P.,
Heat capacities in the range 95 to 260 K and enthalpies of fusion for structure-II clathrate hydrates of some cyclic ethers,
J. Chem. Thermodynam., 1985, 17, 201-208. [all data]
Handa, Hawkins, et al., 1984
Handa, Y.P.; Hawkins, R.E.; Murray, J.J.,
Calibration and testing of a Tian-Calvet heat-flow calorimeter Enthalpies of fusion and heat capacities for ice and tetrahydrofuran hydrate in the range 85 to 270 K,
J. Chem. Thermodynam., 1984, 16, 623-632. [all data]
Leaist, Murray, et al., 1982, 2
Leaist, D.G.; Murray, J.J.; Post, M.L.; Davidson, D.W.,
Enthalpies of decomposition and heat capacities of ethylene oxide and tetrahydrofuran hydrates,
J. Phys Chem., 1982, 86, 4175-4178. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions Tfus Fusion (melting) point Ttriple Triple point temperature Ttrs Temperature of phase transition ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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