Poly[oxy(dimethylsilylene)]
- Monomer Formula: C2H6OSi
- Monomer Molecular weight: 74.1539
- CAS Registry Number: 9016-00-6
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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 | 154.6 | J/mol*K | N/A | Lebedev, Mukhina, et al., 1978 | |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid,1 bar | 150.394 | J/mol*K | N/A | Varma-Nair, Wesson, et al., 1989 | amorphous phase |
| S°solid,1 bar | 135.769 | J/mol*K | N/A | Varma-Nair, Wesson, et al., 1989 |
Constant pressure heat capacity of liquid
| Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 154.6 | 298.15 | Lebedev, Mukhina, et al., 1978 | T = 8 to 332 K. |
Constant pressure heat capacity of solid
| Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 117.775 | 298.15 | Varma-Nair, Wesson, et al., 1989 | amorphous phase; T = 0.10 to 550 K. Cp(liq) = 0.1215T + 81.55 J/mol*K (146 to 340 K). |
| 120.274 | 298.15 | Varma-Nair, Wesson, et al., 1989 | T = 0.10 to 550 K. Cp(c) = exp[0.0189189(lnT)3 - 0.402175(lnT)2 + 3.35144(lnT) - 4.78444] J/mol*K (5 to 146 K). |
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.
Lebedev, Mukhina, et al., 1978
Lebedev, B.V.; Mukhina, N.N.; Kulagina, T.G.,
Thermodynamics of polydimethylsiloxane in the range 0-350°K,
Vysokomol. Soedin., 1978, A20, 1297-1303. [all data]
Varma-Nair, Wesson, et al., 1989
Varma-Nair, M.; Wesson, J.P.; Wunderlich, B.,
The thermal properties of polysiloxanes poly(dimethyl siloxane) and poly(diethyl siloxane),
J. Therm. Anal., 1989, 35(6), 1913-1939. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid Cp,solid Constant pressure heat capacity of solid S°liquid Entropy of liquid at standard conditions 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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