1,1,1,3,5,7,7,7-Octamethyltetrasiloxane
1,1,1,3,5,7,7,7-八甲基四硅氧烷
Also known as: 1,3-BIS(TRIMETHYLSILOXY)-1,3-DIMETHYLDISILOXANE, 3H,5H-OCTAMETHYLTETRASILOXANE, bis(Trimethylsiloxy)dimethyldisiloxane, LS 8630, Tetrasiloxane, 1,1,1,3,5,7,7,7-octamethyl-, MFCD00053664, EINECS 240-209-6
1,1,1,3,5,7,7,7-Octamethyltetrasiloxane (CAS 16066-09-4) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H26O3Si4 and a molecular weight of 282.632 g/mol. It is also known as 1,3-BIS(TRIMETHYLSILOXY)-1,3-DIMETHYLDISILOXANE, 3H,5H-OCTAMETHYLTETRASILOXANE and bis(Trimethylsiloxy)dimethyldisiloxane. Key properties include a melting point of <0ºC, a boiling point of 205.1±23.0 °C at 760 mmHg, a density of 0.863 and a flash point of 77.8±22.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 16066-09-4
- Jingsj CID
- J-26723-0
- Molecular Formula
- C8H26O3Si4
- Chinese Name
- 1,1,1,3,5,7,7,7-八甲基四硅氧烷
- Molecular Weight
- 282.632 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | <0ºC |
|---|---|
| Boiling Point | 205.1±23.0 °C at 760 mmHg |
| Density | 0.863 |
| Flash Point | 77.8±22.6 °C |
Frequently Asked Questions
What is the CAS number of 1,1,1,3,5,7,7,7-Octamethyltetrasiloxane?
The CAS number of 1,1,1,3,5,7,7,7-Octamethyltetrasiloxane is 16066-09-4.
What are the molecular formula and molecular weight of 1,1,1,3,5,7,7,7-Octamethyltetrasiloxane?
1,1,1,3,5,7,7,7-Octamethyltetrasiloxane has molecular formula C8H26O3Si4 and molecular weight 282.632 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,1,1,3,5,7,7,7-Octamethyltetrasiloxane (CAS 16066-09-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26723-0 (accessed 2026-10-24).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.