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Molecule
1,1,3,3,5,5,7,7-Octamethyltetrasiloxane
CAS: 1000-05-1 · C8H26O3Si4
2D Structure
3D Structure
Loading 3D structure...
Basic Information
- CAS Registry Number
- 1000-05-1
- Molecular Formula
- C8H26O3Si4
- Molecular Mass
- 282.64 g/mol
Identifiers
CAS Registry Number
1000-05-1
SMILES
C[SiH](C)O[Si](C)(C)O[Si](C)(C)O[SiH](C)C
InChI Key
MMAKNNYIZYDWTD-UHFFFAOYSA-N
InChI
InChI=1S/C8H26O3Si4/c1-12(2)9-14(5,6)11-15(7,8)10-13(3)4/h12-13H,1-8H3
Names and Synonyms
- 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane Systematic Name
- Tetrasiloxane, 1,1,3,3,5,5,7,7-octamethyl- Synonym
- 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane Synonym
- Octamethyltetrasiloxane Synonym
All Properties
Comprehensive physical and chemical properties
| Property | Value | Source |
|---|---|---|
| Molecular Mass | 282.64 g/mol | CAS Common Chemistry |
| 282.637 g/mol | RDKit | |
| Density | 0.86 g/cm³ | CAS Common Chemistry |
| 0.863 g/cm3 | CAS Common Chemistry | |
| Boiling Point | 169-170 °C | CAS Common Chemistry |
| Canonical SMILES | O([SiH](C)C)[Si](O[Si](O[SiH](C)C)(C)C)(C)C | CAS Common Chemistry |
| InChI | InChI=1S/C8H26O3Si4/c1-12(2)9-14(5,6)11-15(7,8)10-13(3)4/h12-13H,1-8H3 | CAS Common Chemistry |
| InChI Key | InChIKey=MMAKNNYIZYDWTD-UHFFFAOYSA-N | CAS Common Chemistry |
| Name | 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane | CAS Common Chemistry |
| Heavy Atom Count | 15 | RDKit |
| Hydrogen Bond Acceptors | 3 | RDKit |
| Hydrogen Bond Donors | 0 | RDKit |
| Rotatable Bonds | 6 | RDKit |
| Aromatic Ring Count | 0 | RDKit |
| Topological Polar Surface Area | 27.69 Ų | RDKit |
| LogP | 2.4066 | RDKit |
| Molar Refractivity | 75.97300000000004 cm³/mol | RDKit |
| Ring Count | 0 | RDKit |
| Formal Charge | 0 | RDKit |
| Fraction Csp3 | 1.0 | RDKit |
| Exact Mass | 282.09590081199997 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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4
3
2
1
0 ppm
| Shift (ppm) | Multiplicity | Integration | Assignment |
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200 ppm
180
160
140
120
100
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40
20
0 ppm
| Shift (ppm) | DEPT | Assignment |
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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 = 282.64 g/mol; density = 0.860 g/mL. Edit any field — others recompute live.
Related
Related molecules
Other compounds with formula C8H26O3Si4.
