1,1,3,3-Tetramethyldisiloxane
Also known as: Tetramethyldisiloxane, Bis(dimethylsilyl) ether, Bis(dimethylsilyl) oxide, 1,3-Dihydrotetramethyldisiloxane, sym-Tetramethyldisiloxane, TMDSO, Dimethylsilyl ether, Disiloxane, 1,1,3,3-tetramethyl-, MFCD00008256, EINECS 221-906-4
1,1,3,3-Tetramethyldisiloxane (CAS 3277-26-7) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C4H12OSi2 and a molecular weight of 132.31100 g/mol. Key properties include a melting point of <-78ºC, a boiling point of 70.8±9.0 °C at 760 mmHg, a density of 0.76 g/mL at 25 °C(lit.) and a flash point of -3.4±18.7 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 3277-26-7
- Jingsj CID
- J-9254-6
- Molecular Formula
- C4H12OSi2
- Molecular Weight
- 132.31100 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | <-78ºC |
|---|---|
| Boiling Point | 70.8±9.0 °C at 760 mmHg |
| Density | 0.76 g/mL at 25 °C(lit.) |
| Flash Point | -3.4±18.7 °C |
| Exact Mass | 134.058319 |
| PSA | 9.23000 |
| LogP | 4.12 |
| Vapor Pressure | 138.4±0.1 mmHg at 25°C |
| Refractive Index | n20/D 1.370(lit.) |
| Additional Property | DECOMPOSES |
Customs & Trade Information
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 1,1,3,3-Tetramethyldisiloxane?
The CAS number of 1,1,3,3-Tetramethyldisiloxane is 3277-26-7.
What are the molecular formula and molecular weight of 1,1,3,3-Tetramethyldisiloxane?
1,1,3,3-Tetramethyldisiloxane has molecular formula C4H12OSi2 and molecular weight 132.31100 g/mol.
What are the upstream and downstream products of 1,1,3,3-Tetramethyldisiloxane?
For 1,1,3,3-Tetramethyldisiloxane, Upstream Products: 1,3-Dichloro-1,1,3,3-tetramethyldisiloxane, Tetraethyl orthosilicate, Dimethylethoxysilane; Downstream Products: Tetradecamethylcycloheptasiloxane, Octamethylcyclotetrasiloxane, Decamethylcyclopentasiloxane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,1,3,3-Tetramethyldisiloxane (CAS 3277-26-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-9254-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.