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Molecule
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
Identifiers
CAS Registry Number
107-51-7
SMILES
C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C
InChI Key
CXQXSVUQTKDNFP-UHFFFAOYSA-N
InChI
InChI=1S/C8H24O2Si3/c1-11(2,3)9-13(7,8)10-12(4,5)6/h1-8H3
Names and Synonyms
- Octamethyltrisiloxane Common Name
- Trisiloxane, 1,1,1,3,3,5,5,5-octamethyl- Synonym
- Trisiloxane, octamethyl- Synonym
- 1,1,1,3,3,5,5,5-Octamethyltrisiloxane Synonym
- Octamethyltrisiloxane Synonym
- Dimethylbis(trimethylsiloxy)silane Synonym
- KF 96L1.0 Synonym
- OS 20 Synonym
- Pentamethyl(trimethylsilyloxy)disiloxane Synonym
- KF 96A1cs Synonym
- FRD 20 Synonym
- Pentamethyl(trimethylsiloxy)disiloxane Synonym
- MDM Synonym
- MDM (siloxane) Synonym
- OS 20 Fluid Synonym
- Dow Corning OS 20 Synonym
- Dowsil OS 20 Synonym
All Properties
Comprehensive physical and chemical properties
| Property | Value | Source |
|---|---|---|
| Molecular Mass | 236.54 g/mol | CAS Common Chemistry |
| 236.53599999999997 g/mol | RDKit | |
| 236.536 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 |
| 3.3912 | RDKit | |
| 3.53 | chempirical lib | |
| Molar Refractivity | 66.34400000000004 cm³/mol | RDKit |
| Ring Count | 0 | RDKit |
| Formal Charge | 0 | RDKit |
| Fraction Csp3 | 1.0 | RDKit |
| Exact Mass | 236.10840959799998 g/mol | RDKit |
Spectral Data
NMR, IR, and Mass spectral data
Predicting NMR spectra...
10 ppm
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8
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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.
External Resources
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MW = 236.54 g/mol; density = 0.820 g/mL. Edit any field — others recompute live.
