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Diethoxymethylsilane

Also known as: Methyldiethoxysilane, Diethoxy(methyl)silane, DEMS, Silane, diethoxymethyl-, Diethoxymethylsilane [Hydrosilylating Reagent]

Diethoxymethylsilane (CAS 2031-62-1) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C5H14O2Si and a molecular weight of 134.249 g/mol. Key properties include a boiling point of 98.0±0.0 °C at 760 mmHg, a density of 0.838 g/mL at 20 °C(lit.) and a flash point of 9.6±18.7 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly 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.
2031-62-1
Jingsj CID
J-1386406-7
Molecular Formula
C5H14O2Si
Molecular Weight
134.249 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point98.0±0.0 °C at 760 mmHg
Density0.838 g/mL at 20 °C(lit.)
Flash Point9.6±18.7 °C
Exact Mass134.076309
PSA18.46000
LogP3.72
Vapor Pressure46.7±0.1 mmHg at 25°C
Refractive Index1.3760

GHS Safety & Compliance

Flammable / IrritantSignal word: Danger
  • H225 — Highly 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 Diethoxymethylsilane?

The CAS number of Diethoxymethylsilane is 2031-62-1.

What are the molecular formula and molecular weight of Diethoxymethylsilane?

Diethoxymethylsilane has molecular formula C5H14O2Si and molecular weight 134.249 g/mol.

Is Diethoxymethylsilane hazardous?

Diethoxymethylsilane has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H315 — Causes skin irritation; H319 — Causes serious eye irritation.

What are the upstream and downstream products of Diethoxymethylsilane?

For Diethoxymethylsilane, Upstream Products: Dichloromethylsilane, Triethyl orthoformate, Tetraethyl orthosilicate; Downstream Products: Diethoxy(methyl)vinylsilane, 4-(Ethoxymethyl)benzoic acid, 1,2-Bis(methyldiethoxysilyl)ethane.

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

Last updated:

How to cite: Jingsj. "Diethoxymethylsilane (CAS 2031-62-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1386406-7 (accessed 2026-11-09).

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