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1-chloro-1-methylsilacyclobutane

Also known as: 1-chloro-1-methylsiletane, cyclotrimethylenemethylchlorosilane, silacyclobutane, 1-chloro-1-methyl-, methyl(trimethylene)silyl chloride, Si-chloro-Si-methylsilacyclobutane, MFCD00191926

1-chloro-1-methylsilacyclobutane (CAS 2351-34-0) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C4H9ClSi and a molecular weight of 120.65300 g/mol. Key properties include a boiling point of 99.4ºC at 760mmHg, a density of 0.98g/cm3 and a flash point of 2.6ºC. It is classified under GHS with signal word Danger and hazard statements H225 — Highly 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 Aug 21, 2026.

CAS No.
2351-34-0
Jingsj CID
J-1432154-1
Molecular Formula
C4H9ClSi
Molecular Weight
120.65300 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point99.4ºC at 760mmHg
Density0.98g/cm3
Flash Point2.6ºC
Exact Mass120.01600
LogP2.20420
Vapor Pressure44mmHg at 25°C
Refractive Indexn20/D 1.45(lit.)

GHS Safety & Compliance

Flammable / CorrosionSignal word: Danger
  • H225 — Highly flammable liquid and vapour
  • H314 — Causes severe skin burns and eye damage

Frequently Asked Questions

What is the CAS number of 1-chloro-1-methylsilacyclobutane?

The CAS number of 1-chloro-1-methylsilacyclobutane is 2351-34-0.

What are the molecular formula and molecular weight of 1-chloro-1-methylsilacyclobutane?

1-chloro-1-methylsilacyclobutane has molecular formula C4H9ClSi and molecular weight 120.65300 g/mol.

Is 1-chloro-1-methylsilacyclobutane hazardous?

1-chloro-1-methylsilacyclobutane has GHS signal word Danger and hazard statements H225 — Highly 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. "1-chloro-1-methylsilacyclobutane (CAS 2351-34-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1432154-1 (accessed 2026-11-09).

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