Poly(ethylene glycol) dimethyl ether

Also known as: Polyethylene glycol dimethyl ether, Poly(ethylene glycol) dimethyl ether (NHD), Poly(ethylene glycol) dimethyl ether average Mn ~250, Poly(ethylene glycol) dimethyl ether average Mn ~500, Poly(ethylene glycol) dimethyl ether average Mn ~1000, Poly(ethylene glycol) dimethyl ether average Mn ~2000, Polyethylene Glycol Dimethyl Ether (Mw.=ca. 240), Polyethylene glycol dimethyl ether 250 for synthesis, Polyethylene glycol dimethyl ether 500 (stabilised) for synthesis, Dimethyl polyethylene glycol, NHD

Poly(ethylene glycol) dimethyl ether (CAS 24991-55-7) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C4H10O2 and a molecular weight of 90.121 g/mol. Key properties include a melting point of 52-55 °C, a boiling point of 84.5±0.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of 0.0±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 24991-55-7
Jingsj CID: J-1171049-3
Molecular Formula: C₄H₁₀O₂
Molecular Weight: 90.121 g/mol
Category: Solvents
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	52-55 °C
Boiling Point	84.5±0.0 °C at 760 mmHg
Density	0.8±0.1 g/cm3
Flash Point	0.0±0.0 °C
Exact Mass	90.068077
PSA	49.69000
LogP	-0.44
Vapor Pressure	80.6±0.1 mmHg at 25°C
Refractive Index	1.367

Frequently Asked Questions

What is the CAS number of Poly(ethylene glycol) dimethyl ether?

The CAS number of Poly(ethylene glycol) dimethyl ether is 24991-55-7.

What are the molecular formula and molecular weight of Poly(ethylene glycol) dimethyl ether?

Poly(ethylene glycol) dimethyl ether has molecular formula C4H10O2 and molecular weight 90.121 g/mol.

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. "Poly(ethylene glycol) dimethyl ether (CAS 24991-55-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1171049-3 (accessed 2026-11-06).

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