Tetraethylene glycol dimethyl ether

Tetraethylene glycol dimethyl ether (TEGDME or tetraglyme) is a polar aprotic solvent with excellent chemical and thermal stability.

Its high boiling point and stability makes it an ideal candidate for separation processes and high temperature reactions.

TEGDME is also used in lithium-ion battery technology and combined with trifluoroethanol as a working pair for organic absorption heat pumps.

[4][5] TEGDME is listed[6] as a Substance of Very High Concern under REACH regulations.

NFPA 704 four-colored diamond Health 1: Exposure would cause irritation but only minor residual injury. E.g. turpentine Flammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oil Instability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogen Special hazards (white): no code