Polyoxymethylene
- Monomer Formula: CH2O
- Monomer Molecular weight: 30.0260
- CAS Registry Number: 9002-81-7
- Information on this page:
- Options:
Condensed phase thermochemistry data
Go To: Top, References, Notes
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 | 44.65 | J/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 (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 42.79 | 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. |
| 33.9 | 300. | Dainton, Ivin, et al., 1959 | T = 300 to 333 K, mean value. Value per monomer unit. |
References
Go To: Top, Condensed phase thermochemistry data, Notes
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
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.