Pentaethylene glycol monomethyl ether

Also known as: 2,5,8,11,14-Pentaoxahexadecan-16-ol, 3,6,9,12,15-Pentaoxahexadecan-1-ol, 2-[2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethoxy]ethanol, Methoxy-PEG5-OH, m-PEG5-OH, PEG5 monomethyl ether

Pentaethylene glycol monomethyl ether (CAS 23778-52-1) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C11H24O6 and a molecular weight of 252.305 g/mol. Key properties include a boiling point of 332.3±32.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 154.7±25.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 23778-52-1
Jingsj CID: J-36462-5
Molecular Formula: C₁₁H₂₄O₆
Molecular Weight: 252.305 g/mol
Category: Solvents
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	332.3±32.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	154.7±25.1 °C
Exact Mass	252.157288
PSA	66.38000
LogP	-2.23
Vapor Pressure	0.0±1.6 mmHg at 25°C
Refractive Index	1.441

Activity & Biological Data

Target	PEGs
Additional Information	[1]. An S, et al. Small-molecule PROTACs: An emerging and promising approach for the development of targeted therapy drugs. EBioMedicine. 2018 Oct;36:553-562

Customs & Trade Information

HS Code	2909499000
Summary	2909499000. ether-alcohols and their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:9.0%. . MFN tariff:5.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Pentaethylene glycol monomethyl ether?

The CAS number of Pentaethylene glycol monomethyl ether is 23778-52-1.

What are the molecular formula and molecular weight of Pentaethylene glycol monomethyl ether?

Pentaethylene glycol monomethyl ether has molecular formula C11H24O6 and molecular weight 252.305 g/mol.

What are the upstream and downstream products of Pentaethylene glycol monomethyl ether?

For Pentaethylene glycol monomethyl ether, Downstream Products: Nonaethylene glycol monomethyl ether, 2,5,8,11,14-Pentaoxahexadecan-16-amine, Heptaethylene glycol monomethyl 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. "Pentaethylene glycol monomethyl ether (CAS 23778-52-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-36462-5 (accessed 2026-11-09).

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