Dichloro(chloromethyl)methylsilane

Also known as: Chloromethyldichloromethylsilane, Chloromethylmethyldichlorosilane, (Chloromethyl)methyldichlorosilane, ChloroMethyl(dichloro)Methylsilane, Dichloro(chloromethyl)methylsilane, methyl(chloromethyl)dichlorosilane, methyldichloro(chloromethyl)silane

Dichloro(chloromethyl)methylsilane (CAS 1558-33-4) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C2H5Cl3Si and a molecular weight of 163.506 g/mol. Key properties include a melting point of <0°C, a boiling point of 120.0±13.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 35.0±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour, H314 — Causes severe skin burns and eye damage and H331 — Toxic if inhaled. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.: 1558-33-4
Jingsj CID: J-9262-6
Molecular Formula: C₂H₅Cl₃Si
Molecular Weight: 163.506 g/mol
Category: Aliphatic Hydrocarbons
Last updated: 11/3/2026

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Physicochemical Properties

Melting Point	<0°C
Boiling Point	120.0±13.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	35.0±0.0 °C
Exact Mass	161.922607
LogP	3.41
Additional Property	>1 (vs air)
Vapor Pressure	18.6±0.2 mmHg at 25°C
Refractive Index	1.439
Additional Property	reacts

GHS Safety & Compliance

Flammable / Corrosion / Acute ToxicitySignal word: Danger

H226 — Flammable liquid and vapour
H314 — Causes severe skin burns and eye damage
H331 — Toxic if inhaled
H335 — May cause respiratory irritation

Frequently Asked Questions

What is the CAS number of Dichloro(chloromethyl)methylsilane?

The CAS number of Dichloro(chloromethyl)methylsilane is 1558-33-4.

What are the molecular formula and molecular weight of Dichloro(chloromethyl)methylsilane?

Dichloro(chloromethyl)methylsilane has molecular formula C2H5Cl3Si and molecular weight 163.506 g/mol.

Is Dichloro(chloromethyl)methylsilane hazardous?

Dichloro(chloromethyl)methylsilane has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H314 — Causes severe skin burns and eye damage; H331 — Toxic if inhaled.

What are the upstream and downstream products of Dichloro(chloromethyl)methylsilane?

For Dichloro(chloromethyl)methylsilane, Upstream Products: Dichlorodimethylsilane, Diazomethane, Methyltrichlorosilane; Downstream Products: Tetrasiloxane, 3,5-bis(chloromethyl)-1,1,1,3,5,7,7,7-octamethyl-, 2,2,4,4,6,6-Hexachloro-2,4,6-trisilaheptane, Chlorodiphenylmethylsilane.

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

Last updated: 11/3/2026

How to cite: Jingsj. "Dichloro(chloromethyl)methylsilane (CAS 1558-33-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-9262-6 (accessed 2026-11-09).

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