- InChI
- InChI=1S/C18H54O7Si8/c1-26(2,3)19-28(7,8)21-30(11,12)23-32(15,16)25-33(17,18)24-31(13,14)22-29(9,10)20-27(4,5)6/h1-18H3
- InChI Key
- VWGDPBQTSZDFMX-UHFFFAOYSA-N
- Formula
- C18H54O7Si8
- SMILES
-
C[Si](C)(C)O[Si](C)(C)O[Si](C)
(C)O[Si](C)(C)O[Si](C)(C)O[Si] (C)(C)O[Si](C)(C)O[Si](C)(C)C - Molecular Weight1
- 607.30
- CAS
- 556-69-4
- ΔvapH : Enthalpy of vaporization at a given temperature (kJ/mol).
- log10WS : Log10 of Water solubility in mol/l.
- logPoct/wat : Octanol/Water partition coefficient.
- Pvap : Vapor pressure (kPa).
- 1: Molecular weight from the IUPAC atomic weights tables.
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Physical Properties
| Property | Value | Unit | Source |
|---|---|---|---|
| log10WS | 11.13 | Crippen Calculated Property | |
| logPoct/wat | 6.983 | Crippen Calculated Property |
Temperature Dependent Properties
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| ΔvapH | [67.70; 68.40] | kJ/mol | [470.50; 525.00] | 
|
| ΔvapH | 67.70 | kJ/mol | 470.50 | NIST |
| ΔvapH | 68.40 | kJ/mol | 525.00 | NIST |
| Pvap | [7.27e-04; 1.19] | kPa | [338.15; 438.15] |
|
| Pvap | 7.27e-04 | kPa | 338.15 | Tempera... |
| Pvap | 1.85e-03 | kPa | 348.15 | Tempera... |
| Pvap | 4.45e-03 | kPa | 358.15 | Tempera... |
| Pvap | 0.01 | kPa | 368.15 | Tempera... |
| Pvap | 0.02 | kPa | 378.15 | Tempera... |
| Pvap | 0.05 | kPa | 388.15 | Tempera... |
| Pvap | 0.10 | kPa | 398.15 | Tempera... |
| Pvap | 0.19 | kPa | 408.15 | Tempera... |
| Pvap | 0.36 | kPa | 418.15 | Tempera... |
| Pvap | 0.67 | kPa | 428.15 | Tempera... |
| Pvap | 1.19 | kPa | 438.15 | Tempera... |
Similar Compounds
Find more compounds similar to Octadecamethyloctasiloxane.
Sources
- Crippen Method
- Crippen Method
- Temperature-Dependent Vapor Pressure of Selected Cyclic and Linear Polydimethylsiloxane Oligomers
- NIST Webbook
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