Tris(trimethylsiloxy)ethylene

Also known as: Tris(trimethylsilyloxy)ethylene, 1,1,2-Tris(trimethylsilyloxy)ethene, Trimethysiloxyethylene, Tris-(trimethoxysiloxy)-ethylene, 2,2,7,7-Tetramethyl-4-[(trimethylsilyl)oxy]-3,6-dioxa-2,7-disilaoct-4-ene, 1,2-bis(trimethylsilyloxy)ethenoxy-trimethylsilane, [vinyl-2-ylidenetris(oxy)]tris[trimethylsilane]

Tris(trimethylsiloxy)ethylene (CAS 69097-20-7) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C11H28O3Si3 and a molecular weight of 292.595 g/mol. Key properties include a boiling point of 272.9±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 95.2±22.2 °C. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 69097-20-7
Jingsj CID: J-44770-1
Molecular Formula: C₁₁H₂₈O₃Si₃
Molecular Weight: 292.595 g/mol
Category: Aliphatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	272.9±0.0 °C at 760 mmHg
Density	0.9±0.1 g/cm3
Flash Point	95.2±22.2 °C
Exact Mass	292.134613
PSA	27.69000
LogP	5.55
Vapor Pressure	0.0±0.5 mmHg at 25°C
Refractive Index	1.425

GHS Safety & Compliance

Flammable / IrritantSignal word: Warning

H226 — Flammable liquid and vapour
H315 — Causes skin irritation
H319 — Causes serious eye irritation
H335 — May cause respiratory irritation

Frequently Asked Questions

What is the CAS number of Tris(trimethylsiloxy)ethylene?

The CAS number of Tris(trimethylsiloxy)ethylene is 69097-20-7.

What are the molecular formula and molecular weight of Tris(trimethylsiloxy)ethylene?

Tris(trimethylsiloxy)ethylene has molecular formula C11H28O3Si3 and molecular weight 292.595 g/mol.

Is Tris(trimethylsiloxy)ethylene hazardous?

Tris(trimethylsiloxy)ethylene has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour; H315 — Causes skin irritation; H319 — Causes serious eye irritation.

What are the upstream and downstream products of Tris(trimethylsiloxy)ethylene?

For Tris(trimethylsiloxy)ethylene, Upstream Products: Trimethylsilyl trifluoromethanesulfonate, Trimethylsilyl trimethylsiloxyacetate, Chlorotrimethylsilane; Downstream Products: 2-Hydroxyacetophenone.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Tris(trimethylsiloxy)ethylene (CAS 69097-20-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44770-1 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.