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Chlorodimethyl(2,3,4,5-tetramethyl-2,4-cyclopentadien-1-yl)silane

Also known as: 1,3-Cyclopentadiene, 5-(chlorodimethylsilyl)-1,2,3,4-tetramethyl-, Chlorodimethyl(2,3,4,5-tetramethylcyclopenta-2,4-dien-1-yl)silane, Dimethylsilyl(2,3,4,5-tetramethylcyclopentadienyl) chloride, Silane, chlorodimethyl(2,3,4,5-tetramethyl-2,4-cyclopentadien-1-yl)- (9CI)

Chlorodimethyl(2,3,4,5-tetramethyl-2,4-cyclopentadien-1-yl)silane (CAS 125542-03-2) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C11H19ClSi and a molecular weight of 214.80700 g/mol. Key properties include a boiling point of 50ºC0.05 mm Hg(lit.), a density of 0.972 g/mL at 25ºC(lit.) and a flash point of 56.1 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour and H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
125542-03-2
Jingsj CID
J-26168-7
Molecular Formula
C11H19ClSi
Molecular Weight
214.80700 g/mol
Category
Aliphatic Hydrocarbons
Last updated
11/2/2026
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Physicochemical Properties

Boiling Point50ºC0.05 mm Hg(lit.)
Density0.972 g/mL at 25ºC(lit.)
Flash Point56.1 °C
Exact Mass214.09400
LogP4.48690
Vapor Pressure0.125mmHg at 25°C
Refractive Indexn20/D 1.496(lit.)

GHS Safety & Compliance

Flammable / CorrosionSignal word: Danger
  • H226 — Flammable liquid and vapour
  • H314 — Causes severe skin burns and eye damage

Frequently Asked Questions

What is the CAS number of Chlorodimethyl(2,3,4,5-tetramethyl-2,4-cyclopentadien-1-yl)silane?

The CAS number of Chlorodimethyl(2,3,4,5-tetramethyl-2,4-cyclopentadien-1-yl)silane is 125542-03-2.

What are the molecular formula and molecular weight of Chlorodimethyl(2,3,4,5-tetramethyl-2,4-cyclopentadien-1-yl)silane?

Chlorodimethyl(2,3,4,5-tetramethyl-2,4-cyclopentadien-1-yl)silane has molecular formula C11H19ClSi and molecular weight 214.80700 g/mol.

Is Chlorodimethyl(2,3,4,5-tetramethyl-2,4-cyclopentadien-1-yl)silane hazardous?

Chlorodimethyl(2,3,4,5-tetramethyl-2,4-cyclopentadien-1-yl)silane has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H314 — Causes severe skin burns and eye damage.

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

Last updated:

How to cite: Jingsj. "Chlorodimethyl(2,3,4,5-tetramethyl-2,4-cyclopentadien-1-yl)silane (CAS 125542-03-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26168-7 (accessed 2026-11-09).

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