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Molecule
Pentamethyldisiloxane
CAS: 1438-82-0 · C5H16OSi2
2D Structure
3D Structure
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Basic Information
- CAS Registry Number
- 1438-82-0
- Molecular Formula
- C5H16OSi2
- Molecular Mass
- 148.35 g/mol
Identifiers
CAS Registry Number
1438-82-0
SMILES
C[SiH](C)O[Si](C)(C)C
InChI Key
AOJHDNSYXUZCCE-UHFFFAOYSA-N
InChI
InChI=1S/C5H16OSi2/c1-7(2)6-8(3,4)5/h7H,1-5H3
Names and Synonyms
- Pentamethyldisiloxane Common Name
- Disiloxane, 1,1,1,3,3-pentamethyl- Synonym
- Disiloxane, pentamethyl- Synonym
- 1,1,1,3,3-Pentamethyldisiloxane Synonym
- Pentamethyldisiloxane Synonym
- Trimethylsiloxydimethylsilane Synonym
- 1,1,3,3,3-Pentamethyldisiloxane Synonym
- Dimethyl(trimethylsilyloxy)silane Synonym
- Dimethyl(trimethylsiloxy)silane Synonym
- [(Dimethylsilyl)oxy]trimethylsilane Synonym
All Properties
Comprehensive physical and chemical properties
| Property | Value | Source |
|---|---|---|
| Molecular Mass | 148.35 g/mol | CAS Common Chemistry |
| 148.35399999999998 g/mol | RDKit | |
| 148.354 g/mol | RDKit | |
| Density | 0.76 g/cm³ | CAS Common Chemistry |
| 0.758 g/cm3 | CAS Common Chemistry | |
| Boiling Point | 86-87 °C | CAS Common Chemistry |
| Canonical SMILES | O([SiH](C)C)[Si](C)(C)C | CAS Common Chemistry |
| InChI | InChI=1S/C5H16OSi2/c1-7(2)6-8(3,4)5/h7H,1-5H3 | CAS Common Chemistry |
| InChI Key | InChIKey=AOJHDNSYXUZCCE-UHFFFAOYSA-N | CAS Common Chemistry |
| Name | Pentamethyldisiloxane | CAS Common Chemistry |
| Heavy Atom Count | 8 | RDKit |
| Hydrogen Bond Acceptors | 1 | RDKit |
| Hydrogen Bond Donors | 0 | RDKit |
| Rotatable Bonds | 2 | RDKit |
| Aromatic Ring Count | 0 | RDKit |
| Topological Polar Surface Area | 9.23 Ų | RDKit |
| LogP | 1.8213 | RDKit |
| Molar Refractivity | 43.30800000000002 cm³/mol | RDKit |
| Ring Count | 0 | RDKit |
| Formal Charge | 0 | RDKit |
| Fraction Csp3 | 1.0 | RDKit |
| Exact Mass | 148.073968192 g/mol | RDKit |
Spectral Data
NMR, IR, and Mass spectral data
Predicting NMR spectra...
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200 ppm
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| 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 = 148.35 g/mol; density = 0.760 g/mL. Edit any field — others recompute live.
