Description

Polyethylene Glycol Dimethyl Ether is a high-purity, non-ionic solvent and chemical intermediate known for its excellent solvating power and thermal stability. This versatile compound is critical for applications requiring a polar aprotic medium with low volatility and high boiling point. It is essential for manufacturers in the pharmaceutical, polymer, and specialty chemical industries seeking reliable performance in synthesis and formulation.

Application

• Gas Treating Solvent: Widely used as a physical solvent for the selective removal of acid gases like CO₂ and H₂S from natural gas and synthesis gas streams.
• Polymerization Medium: Serves as an inert reaction solvent and chain transfer agent in the synthesis of various polymers, including polyurethanes and polyesters.
• Electrolyte Component: Employed as a co-solvent or plasticizer in lithium-ion battery electrolytes to enhance ionic conductivity and stability.
• Chemical Intermediate: Used in organic synthesis, particularly in phase-transfer catalysis and as a precursor for functionalized polyethylene glycols.
• Industrial Cleaning Formulations: Acts as a coupling agent and solvent in specialty cleaners and degreasers.
• Pharmaceutical Excipient: Utilized as a solvent and vehicle in certain drug delivery systems and topical formulations.

Basic Information

Product Name	Polyethylene Glycol Dimethyl Ether
CAS No.	24991-55-7
Molecular Formula	C2n+2H4n+6On+1 (for PEGDME-n)
Molecular Weight	Varies by chain length (n). Contact for details on specific grades.
Synonyms	PEG Dimethyl Ether; Poly(ethylene glycol) dimethyl ether; Dimethoxypolyethylene glycol; Polyglycol dimethyl ether; PEGDME; Glymes (e.g., Diglyme, Triglyme, Tetraglyme for specific oligomers); Polyoxyethylene dimethyl ether; Dimethyl polyethylene glycol
EINECS	246-574-0

Quality Control

Our Polyethylene Glycol Dimethyl Ether is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency, purity, and compliance with agreed specifications. A comprehensive Certificate of Analysis (COA) detailing assay, water content, color, and other critical parameters is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Keep container tightly sealed when not in use to prevent absorption of atmospheric moisture and CO₂.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Assay (GC or Titration)	≥ 98.0%
Water Content (Karl Fischer)	≤ 0.1%
Color (APHA)	≤ 50
Acid Value	≤ 0.1 mg KOH/g
Peroxide Value	≤ 0.5 meq/kg
Average Molecular Weight (n)	As per grade (e.g., n=2-10)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.