Tetraethylene glycol dimethyl ether

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Tetraethylene glycol dimethyl ether
Abbreviations TEGDME, E181
CAS number 143-24-8 YesY
PubChem 8925
EC number 205-594-7
Jmol-3D images Image 1
Molecular formula C10H22O5
Molar mass 222.28 g mol−1
Appearance Colorless liquid
Density 1.009 g/mL
Melting point −30 °C (−22 °F; 243 K)
Boiling point 275 °C (527 °F; 548 K)
Solubility in water Miscible[1]
Std enthalpy of
1134.6 kJ/mol
Std enthalpy of
6196.5 kJ/mol
EU classification Irritant (Xi)
R-phrases R19, R43
S-phrases S24, S36
NFPA 704
Flammability code 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g., canola oil Health code 0: Exposure under fire conditions would offer no hazard beyond that of ordinary combustible material. E.g., sodium chloride Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
Flash point 141 °C (286 °F; 414 K)
Related compounds
Related glycol ethers
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Tetraethylene glycol dimethyl ether (also called 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.


  1. ^ http://www.hazard.com/msds/f2/bgx/bgxfk.html
  • Hyo-Jun Ahn, Ki-Won Kim, Jou-Hyun Ahn, Kwon-Koo Cho, Tae-Hyun Nam, Jong-Uk Kim, Gyu-Bong Cho; Ho-Suk Ryu (2006). "Discharge behavior of lithium/sulfur cell with TEGDME based electrolyte at low temperature". Journal of Power Sources (Review) (1): 201–206. doi:10.1016/j.jpowsour.2005.12.061. 
  • Karl Stephan; Andreas Genssle (2000). "Analysis of the process characteristics of an absorption heat transformer with compact heat exchangers and the mixture TFE–E181". International Journal of Thermal Sciences (Review) (1): 30–38. doi:10.1016/S1290-0729(00)00197-5.