Allyl ethyl ether

Also known as: 3-ethoxy-1-propene, 3-ethoxypropene, ethyl allyl ether, 3-ethoxyprop-1-ene, Ethyl 2-propenyl ether, 1-Propene, 3-ethoxy-

Allyl ethyl ether (CAS 557-31-3) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C5H10O and a molecular weight of 86.132 g/mol. Key properties include a boiling point of 63.3±9.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of -20.6±0.0 °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.: 557-31-3
Jingsj CID: J-45749-9
Molecular Formula: C₅H₁₀O
Molecular Weight: 86.132 g/mol
Category: Ethers
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	63.3±9.0 °C at 760 mmHg
Density	0.8±0.1 g/cm3
Flash Point	-20.6±0.0 °C
Exact Mass	86.073166
PSA	9.23000
LogP	1.28
Vapor Pressure	184.8±0.1 mmHg at 25°C
Refractive Index	1.390

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 Allyl ethyl ether?

The CAS number of Allyl ethyl ether is 557-31-3.

What are the molecular formula and molecular weight of Allyl ethyl ether?

Allyl ethyl ether has molecular formula C5H10O and molecular weight 86.132 g/mol.

Is Allyl ethyl ether hazardous?

Allyl ethyl ether 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 Allyl ethyl ether?

For Allyl ethyl ether, Upstream Products: Ethanol, Allyl bromide, Bromoethane; Downstream Products: Diethyl allylmalonate, Diethyl 2,2-diallylmalonate, Ethyl 1-propenyl ether.

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. "Allyl ethyl ether (CAS 557-31-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-45749-9 (accessed 2026-11-06).

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