Ethylene oxide hydrate
- Formula: C2H4O·H14O7
- Molecular weight: 170.1595
- CAS Registry Number: 16002-48-5
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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 | 608.86 | J/mol*K | N/A | Yammamuro, Handa, et al., 1990 |
Constant pressure heat capacity of liquid
| Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 642.20 | 298.15 | Yammamuro, Handa, et al., 1990 | T = 5 to 298.15 K. Since the melting point is 284.11 K, Cp value at 298.15 is anomolous. |
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 | 283.2 | K | N/A | Leaist, Murray, et al., 1982 | Uncertainty assigned by TRC = 0.4 K; TRC |
Enthalpy of fusion
| ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 48.260 | 284.11 | Yammamuro, Handa, et al., 1990 | DH |
| 48.000 | 283.2 | Leaist, Murray, et al., 1982, 2 | DH |
Entropy of fusion
| ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 169.5 | 283.2 | Leaist, Murray, et al., 1982, 2 | DH |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Yammamuro, Handa, et al., 1990
Yammamuro, O.; Handa, Y.P.; Oguni, M.; Suga, H.,
Heat capacity and glass transition of ethylene oxide clathrate hydrate,
J. Inclusion Phenom. Mol. Recognit. Chem., 1990, 8(1-2), 45-58. [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]
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 ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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