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Octamethyltrisiloxane
CAS: 107-51-7 | C8H24O2Si3
2D Structure
3D Structure
Loading 3D structure...
Basic Information
CAS Registry Number:
107-51-7
Molecular Formula:
C8H24O2Si3
Molecular Mass:
236.54 g/mol
Names and Synonyms:
Octamethyltrisiloxane
Trisiloxane, 1,1,1,3,3,5,5,5-octamethyl-
Trisiloxane, octamethyl-
1,1,1,3,3,5,5,5-Octamethyltrisiloxane
Octamethyltrisiloxane
Dimethylbis(trimethylsiloxy)silane
KF 96L1.0
OS 20
Pentamethyl(trimethylsilyloxy)disiloxane
KF 96A1cs
FRD 20
Pentamethyl(trimethylsiloxy)disiloxane
MDM
MDM (siloxane)
OS 20 Fluid
Dow Corning OS 20
Dowsil OS 20
Identifiers:
SMILES:
C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C
InChI:
InChI=1S/C8H24O2Si3/c1-11(2,3)9-13(7,8)10-12(4,5)6/h1-8H3
Key Properties
Boiling Point
153 °C
CAS Common Chemistry
Melting Point
-80 °C
CAS Common Chemistry
Density
0.82 g/cm³
CAS Common Chemistry
Spectral Data
NMR, IR, and Mass spectral data
1H NMR
13C NMR
Predicting NMR spectra...
10 ppm
9
8
7
6
5
4
3
2
1
0 ppm
| Shift (ppm) | Multiplicity | Integration | Assignment |
|---|
200 ppm
180
160
140
120
100
80
60
40
20
0 ppm
| Shift (ppm) | DEPT | Assignment |
|---|
Note: These NMR spectra are predicted computationally and may differ from experimental data. Predictions are based on chemical environment analysis.
All Properties
Comprehensive physical and chemical properties
| Property | Value | Source |
|---|---|---|
| Molecular Mass | 236.54 g/mol | CAS Common Chemistry |
| 236.53599999999997 g/mol | RDKit | |
| 236.10840959799998 g/mol | RDKit | |
| Density | 0.82 g/cm³ | CAS Common Chemistry |
| 0.820 g/cm3 | CAS Common Chemistry | |
| Boiling Point | 153 °C | CAS Common Chemistry |
| Canonical SMILES | O([Si](O[Si](C)(C)C)(C)C)[Si](C)(C)C | CAS Common Chemistry |
| InChI | InChI=1S/C8H24O2Si3/c1-11(2,3)9-13(7,8)10-12(4,5)6/h1-8H3 | CAS Common Chemistry |
| InChI Key | InChIKey=CXQXSVUQTKDNFP-UHFFFAOYSA-N | CAS Common Chemistry |
| Melting Point | -80 °C | CAS Common Chemistry |
| Name | Octamethyltrisiloxane | CAS Common Chemistry |
| Heavy Atom Count | 13 | RDKit |
| Hydrogen Bond Acceptors | 2 | RDKit |
| Hydrogen Bond Donors | 0 | RDKit |
| Rotatable Bonds | 4 | RDKit |
| Aromatic Ring Count | 0 | RDKit |
| Topological Polar Surface Area | 18.46 Ų | RDKit |
| LogP | 3.391200000000002 | RDKit |
| Molar Refractivity | 66.34400000000004 | RDKit |
