Tetraethylene glycol dimethyl ether

Tetraethylene glycol dimethyl ether (CAS 143-24-8), commercially known as Tetraglyme or by the abbreviation TEGDME, is a high-boiling, aprotic ether solvent used across demanding industrial and research-grade applications. Its thermal stability and low volatility make it a preferred solvent where conventional options fail under process conditions. In battery and electrochemical research, TEGDME functions as an electrolyte solvent.

It is used for lithium-air and lithium-sulfur systems, where its electrochemical stability directly influences cycle performance. Pharmaceutical and biotech manufacturers use it as a reaction solvent and carrier. It is ideal for sensitive active ingredients requiring an inert, non-protic environment. In polymer processing, it supports polymerization reactions and acts as a cross-linking medium for product consistency.

Electronics manufacturers apply it in specialty cleaning and formulation processes where residue-free, high-purity solvent performance is required. TEGDME is supplied as a clear liquid in standard packaging. Standard industrial packaging includes drums and IBC containers. Technical and high-purity grades are available, with high-purity specifications commonly required for battery-grade and pharmaceutical applications.

Anhydrous grades are also offered for moisture-sensitive processes in electrochemical and synthesis applications. This ensures optimal performance in environments where water content must be strictly controlled.