1,1,1,5,5,5-Hexamethyl-3,3-diphenyltrisiloxane
- Formula: C24H28O2Si3
- Molecular weight: 432.7344
- CAS Registry Number: 797-77-3
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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 | 769. | J/mol*K | N/A | Shakhtakhtinskii, Dzhafarov, et al., 1981 |
Constant pressure heat capacity of liquid
| Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 648. | 298. | Shakhtakhtinskii, Dzhafarov, et al., 1981 | T = 12 to 300 K. |
Phase change data
Go To: Top, Condensed phase thermochemistry data, References, Notes
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
AC - William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Ttriple | 270.49 | K | N/A | Shakhtakhtinskii, Dzhafarov, et al., 1981, 2 | Uncertainty assigned by TRC = 0.02 K; TRC |
Enthalpy of fusion
| ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 22.753 | 270.49 | Shakhtakhtinskii, Dzhafarov, et al., 1981 | DH |
| 22.75 | 270.5 | Domalski and Hearing, 1996 | AC |
Entropy of fusion
| ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 84.12 | 270.49 | Shakhtakhtinskii, Dzhafarov, et al., 1981 | 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.
Shakhtakhtinskii, Dzhafarov, et al., 1981
Shakhtakhtinskii, T.N.; Dzhafarov, O.I.; Karasharli, K.A.; Kuliev, A.M.,
Heat capacity and rotational isomerism of 1,1,1,5,5,5-hexamethyl-3,3-diphenyltrisiloxane,
Dokl. Akad. Nauk Azerb., 1981, SSR 37(9), 54-57. [all data]
Shakhtakhtinskii, Dzhafarov, et al., 1981, 2
Shakhtakhtinskii, T.N.; Dzhafarov, O.I.; Karasharli, K.A.; Kuliev, A.M.,
Heat capacity and rotational isomerism of 1,1,1,5,5,5-hexamethyl-3,3-diphenyltrisiloxane,
Dokl. Akad. Nauk. Azerb. SSR, 1981, 37, 54. [all data]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [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 Ttriple Triple point temperature ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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