Polytetrahydrofuran
- Monomer Formula: C4H8O
- Monomer Molecular weight: 72.1057
- CAS Registry Number: 24979-97-3
- 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: Furan, tetrahydro-, homopolymer; Polytetramethylene Ether Glycol
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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°solid,1 bar | 19.85 | cal/mol*K | N/A | Lebedev and Lityagov, 1977 |
Constant pressure heat capacity of solid
| Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 19.43 | 200. | Lebedev and Lityagov, 1977 | T = 5 to 400 K. Transition region at 298.15 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 by: Eugene S. Domalski and Elizabeth D. Hearing
Enthalpy of fusion
| ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 2.6291 | 316. | Lebedev and Lityagov, 1977, 2 | |
| 2.6291 | 316. | Lebedev and Lityagov, 1977 |
Entropy of fusion
| ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 8.32 | 316. | Lebedev and Lityagov, 1977, 2 | |
| 8.32 | 316. | Lebedev and Lityagov, 1977 |
Temperature of phase transition
| Ttrs (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|
| 186. | crystaline, II | crystaline, I | Lebedev and Lityagov, 1977, 2 | Glass point. |
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.
Lebedev and Lityagov, 1977
Lebedev, B.V.; Lityagov, V.Ya.,
Calorimetric study of tetrahydrofuran and its polymerization in the temperature range 0-400°K,
Vysokomol. Soedin., 1977, A19, 2283-2290. [all data]
Lebedev and Lityagov, 1977, 2
Lebedev, B.V.; Lityagov, V.Ya.,
The difference between the entropies and enthalpies of vitreous and crystalline polytetrahydrofuran at 0 K,
Zhur. Fiz. Khim., 1977, 51, 1276. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) 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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