Poly(ethylene glycol) dimethyl ether
Poly(ethylene glycol) dimethyl ether (CAS: 24991-55-7), with the linear formula CH3O(CH2CH2O)nCH3, is a versatile organic compound widely recognised for its utility in various chemical applications. As a homobifunctional PEG derivative, it serves as a valuable building block in materials science and polymer chemistry. Its unique properties make it suitable for research and industrial processes requiring specific solubility and reactivity characteristics.
- IUPAC
- Dimethyl polyethylene glycol

Polymer Science
Utilised as a monomer or crosslinking agent in the synthesis of advanced polymers. Its structure allows for the modification of polymer properties such as flexibility and solubility.
Materials Science
Employed in the development of novel materials, including functionalised surfaces and matrices for drug delivery systems. Its biocompatible nature makes it suitable for bio-applications.
Organic Synthesis
Serves as a solvent or reactant in various organic transformations. The ether linkages offer stability and specific solvation characteristics.
Research and Development
A key reagent in academic and industrial research laboratories for exploring new chemical pathways and material functionalities.
| Linear formula | CH3O(CH2CH2O)nCH3 |
|---|---|
| Boiling point | ≥250 °C(lit.) |
| Density | 1.03 g/mL at 20 °C |
| Refractive index | n20/D 1.441 |
| Protective equipment | Eyeshields, Gloves |
|---|---|
| Flash point | 156 °C / 312.8 °F |
| Water hazard class (WGK, DE) | 1 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Poly(ethylene glycol) dimethyl ether used for?
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Poly(ethylene glycol) dimethyl ether is used in polymer science, materials science, organic synthesis, and research and development as a building block, solvent, or reactant.
What is the CAS number and formula for Poly(ethylene glycol) dimethyl ether?
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The CAS number is 24991-55-7, and the linear formula is CH3O(CH2CH2O)nCH3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Poly(ethylene glycol) dimethyl ether in technical/research grades. We do not represent this product as USP, BP, or EP grade unless explicitly stated in the product specifications.
What are the primary safety concerns when handling Poly(ethylene glycol) dimethyl ether?
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When handling Poly(ethylene glycol) dimethyl ether, it is recommended to use eyeshields and gloves. Refer to the Safety Data Sheet (SDS) for comprehensive handling instructions and hazard information.
How is Poly(ethylene glycol) dimethyl ether packed and shipped?
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Poly(ethylene glycol) dimethyl ether is carefully packed to ensure product integrity during transit and is exported globally by Tech Serve Solutions.
How can I request a sample or quote for Poly(ethylene glycol) dimethyl ether?
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To request a sample or a quote, please contact the Tech Serve Solutions sales team through our website or by phone, providing the product name and CAS number.
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