3-Ethyl-1,1,1,3,5,5,5-heptamethyltrisiloxane
Also known as: 3-ethylheptamethyltrisiloxane, 3-ethyl-1,1,1,3,5,5,5-heptamethyltrisiloxane, ETHYL TRISILOXANE, Ethyl heptamethyltrisiloxane IOTA 20578, Trisiloxane, 3-ethyl-1,1,1,3,5,5,5-heptamethyl-, Trisiloxane,3-ethyl-1,1,1,3,5,5,5-heptamethyl, ethyl-methyl-bis(trimethylsilyloxy)silane, heptamethyl 2-ethyl trisiloxane, 3-Aethyl-1,1,1,3,5,5,5-heptamethyl-trisiloxan
3-Ethyl-1,1,1,3,5,5,5-heptamethyltrisiloxane (CAS 17861-60-8) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C9H26O2Si3 and a molecular weight of 250.558 g/mol. Key properties include a boiling point of 201.0±23.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of 66.3±23.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 17861-60-8
- Jingsj CID
- J-1505301-7
- Molecular Formula
- C9H26O2Si3
- Molecular Weight
- 250.558 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 201.0±23.0 °C at 760 mmHg |
|---|---|
| Density | 0.8±0.1 g/cm3 |
| Flash Point | 66.3±23.0 °C |
| Exact Mass | 250.124054 |
| PSA | 18.46000 |
| LogP | 5.27 |
| Vapor Pressure | 0.4±0.4 mmHg at 25°C |
| Refractive Index | 1.409 |
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-1,1,1,3,5,5,5-heptamethyltrisiloxane?
The CAS number of 3-Ethyl-1,1,1,3,5,5,5-heptamethyltrisiloxane is 17861-60-8.
What are the molecular formula and molecular weight of 3-Ethyl-1,1,1,3,5,5,5-heptamethyltrisiloxane?
3-Ethyl-1,1,1,3,5,5,5-heptamethyltrisiloxane has molecular formula C9H26O2Si3 and molecular weight 250.558 g/mol.
What are the upstream and downstream products of 3-Ethyl-1,1,1,3,5,5,5-heptamethyltrisiloxane?
For 3-Ethyl-1,1,1,3,5,5,5-heptamethyltrisiloxane, Upstream Products: 1,1,1,3,5,5,5-Heptamethyltrisiloxane, Chlorotrimethylsilane, Ethylmethyldichlorosilane.
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-1,1,1,3,5,5,5-heptamethyltrisiloxane (CAS 17861-60-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1505301-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.