3-Ethyl-1,1,1,5,5,5-hexamethyl-3-trimethylsilanyloxy-trisiloxane
Also known as: Ethyltris(trimethylsiloxy)silane, Trisiloxane, 3-ethyl-1,1,1,5,5,5-hexamethyl-3-[(trimethylsilyl)oxy]-, ethyl-tris(trimethylsilyloxy)silane, 3-Aethyl-1,1,1,5,5,5-hexamethyl-3-trimethylsilyloxy-trisiloxan, O304, Tris-trimethylsiloxy-aethyl-silan
3-Ethyl-1,1,1,5,5,5-hexamethyl-3-trimethylsilanyloxy-trisiloxane (CAS 18030-66-5) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C11H32O3Si4 and a molecular weight of 324.71200 g/mol. Key properties include a boiling point of 253.314ºC at 760 mmHg, a density of 0.873g/cm3 and a flash point of 97.872ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 18030-66-5
- Jingsj CID
- J-1024558-5
- Molecular Formula
- C11H32O3Si4
- Molecular Weight
- 324.71200 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 253.314ºC at 760 mmHg |
|---|---|
| Density | 0.873g/cm3 |
| Flash Point | 97.872ºC |
| Exact Mass | 324.14300 |
| PSA | 27.69000 |
| LogP | 4.49970 |
| Vapor Pressure | 0.029mmHg at 25°C |
| Refractive Index | 1.415 |
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 3-Ethyl-1,1,1,5,5,5-hexamethyl-3-trimethylsilanyloxy-trisiloxane?
The CAS number of 3-Ethyl-1,1,1,5,5,5-hexamethyl-3-trimethylsilanyloxy-trisiloxane is 18030-66-5.
What are the molecular formula and molecular weight of 3-Ethyl-1,1,1,5,5,5-hexamethyl-3-trimethylsilanyloxy-trisiloxane?
3-Ethyl-1,1,1,5,5,5-hexamethyl-3-trimethylsilanyloxy-trisiloxane has molecular formula C11H32O3Si4 and molecular weight 324.71200 g/mol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Ethyl-1,1,1,5,5,5-hexamethyl-3-trimethylsilanyloxy-trisiloxane (CAS 18030-66-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1024558-5 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.