Vinyl Tris(Trimethylsiloxy)Silane

乙烯基三(三甲基硅氧基)硅烷

Also known as: 1,1,1,5,5,5-Hexamethyl-3-[(trimethylsilyl)oxy]-3-vinyltrisiloxane, 1,1,1,5,5,5-hexamethyl-3-((trimethylsilyl)oxy)-3-vinyltrisiloxane, 3-ethenyl-1,1,1,5,5,5-hexamethyl-3-[(trimethylsilyl)oxy]trisiloxane, Trisiloxane, 3-ethenyl-1,1,1,5,5,5-hexamethyl-3-((trimethylsilyl)oxy)-, Vinyltris(trimethylsiloxy)silane, Vinyltris(trimethylsilyloxy)silane, [Tris(trimethylsiloxy)silyl]ethylene, ethenyl-tris(trimethylsilyloxy)silane, MFCD00054159, EINECS 226-342-2

Vinyl Tris(Trimethylsiloxy)Silane (CAS 5356-84-3) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C11H30O3Si4 and a molecular weight of 322.696 g/mol. It is also known as 1,1,1,5,5,5-Hexamethyl-3-[(trimethylsilyl)oxy]-3-vinyltrisiloxane, 1,1,1,5,5,5-hexamethyl-3-((trimethylsilyl)oxy)-3-vinyltrisiloxane and 3-ethenyl-1,1,1,5,5,5-hexamethyl-3-[(trimethylsilyl)oxy]trisiloxane. Key properties include a boiling point of 249.1±23.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 95.5±23.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
5356-84-3
Jingsj CID
J-6702-5
Molecular Formula
C11H30O3Si4
Chinese Name
乙烯基三(三甲基硅氧基)硅烷
Molecular Weight
322.696 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point249.1±23.0 °C at 760 mmHg
Density0.9±0.1 g/cm3
Flash Point95.5±23.0 °C
Exact Mass322.127197
PSA27.69000
LogP7.12
Vapor Pressure0.0±0.5 mmHg at 25°C
Refractive Index1.420

Customs & Trade Information

HS Code2934999090
Summary2934999090. 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 Vinyl Tris(Trimethylsiloxy)Silane?

The CAS number of Vinyl Tris(Trimethylsiloxy)Silane is 5356-84-3.

What are the molecular formula and molecular weight of Vinyl Tris(Trimethylsiloxy)Silane?

Vinyl Tris(Trimethylsiloxy)Silane has molecular formula C11H30O3Si4 and molecular weight 322.696 g/mol.

What are the upstream and downstream products of Vinyl Tris(Trimethylsiloxy)Silane?

For Vinyl Tris(Trimethylsiloxy)Silane, Upstream Products: Chlorotrimethylsilane, Triethoxyvinylsilane, Trichlorovinylsilane.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Vinyl Tris(Trimethylsiloxy)Silane (CAS 5356-84-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-6702-5 (accessed 2026-10-28).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.