Polyoxymethylene
- Monomer Formula: CH2O
- Monomer Molecular weight: 30.0260
- CAS Registry Number: 9002-81-7
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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 | 10.67 | cal/mol*K | N/A | Dainton, Evans, et al., 1962 | T = 20 to 300 K, Data given for Delrin. Data also given for trioxan copolymer where S(300 K) = 43.21 J/mol*K. |
Constant pressure heat capacity of solid
| Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 10.23 | 300. | Dainton, Evans, et al., 1962 | T = 20 to 300 K. Data given for Delrin. Data also given for trioxan copolymer where Cp(300 K) = 41.11 J/mol*K. |
| 8.10 | 300. | Dainton, Ivin, et al., 1959 | T = 300 to 333 K, mean value. Value per monomer unit. |
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.
Dainton, Evans, et al., 1962
Dainton, F.S.; Evans, D.M.; Hoare, F.E.; Melia, T.P.,
Thermodynamic functions of linear high polymers. Part I. Polyoxymethylene,
Polymer, 1962, 3, 263-270. [all data]
Dainton, Ivin, et al., 1959
Dainton, F.S.; Ivin, K.J.; Walmsley, D.A.G.,
The equilbrium between gaseous formaldehyde and solid polyoxymethylene,
Trans. Faraday Soc., 1959, 55, 61-64. [all data]
Notes
Go To: Top, Condensed phase thermochemistry 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) - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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