Diethylene glycol diethyl ether

Diethylene glycol diethyl ether
Names
	Preferred IUPAC name 1-Ethoxy-2-(2-ethoxyethoxy)ethane
	Other names Diethyl carbitol; Bis(2-ethoxyethyl) ether; Ethyl diglyme; Diethyldiethylene glycol; 3,6,9-Trioxaundecane; Diethyldiglycol
Identifiers
CAS Number	112-36-7 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:44664;
ChemSpider	21106583;
ECHA InfoCard	100.003.603
PubChem CID	8179;
UNII	ZH086O935Z ;
CompTox Dashboard (EPA)	DTXSID3025047 ;
	InChI InChI=1S/C8H18O3/c1-3-9-5-7-11-8-6-10-4-2/h3-8H2,1-2H3 Key: RRQYJINTUHWNHW-UHFFFAOYSA-N;
	SMILES CCOCCOCCOCC;
Properties
Chemical formula	C8H18O3
Molar mass	162.22 g/mol
Appearance	colorless liquid
Density	0.9021 g/cm3
Melting point	−47.7 °C (−53.9 °F; 225.5 K)
Boiling point	188 °C (370 °F; 461 K)
Solubility in water	very soluble
Solubility	very soluble in ethanol, organic solvents; soluble in ethyl ether
log P	0.39
Vapor pressure	0.520 mmHg
Refractive index (nD)	1.40962
Viscosity	1.238 mPa·s
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319
Precautionary statements	P264, P264+P265, P280, P302+P352, P305+P351+P338, P321, P332+P317, P337+P317, P362+P364
Flash point	82 °C (180 °F; 355 K)
Autoignition; temperature	205 °C (401 °F; 478 K)
Related compounds
Related compounds	Diethylene glycol dimethyl ether; Diethylene glycol;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Diethylene glycol diethyl ether (DEGDEE) is an organic solvent with a high boiling point. It has found use as an electrolyte for lithium-ion batteries.^[2]^[3]

References

^ ^a ^b ^c Ku, Hsu-Chen; Tu, Chein-Hsiun (2000-03-01). "Densities and Viscosities of Seven Glycol Ethers from 288.15 K to 343.15 K". Journal of Chemical & Engineering Data. 45 (2): 391–394. doi:10.1021/je990281u. ISSN 0021-9568, 1520-5134. Retrieved 2025-12-07.
^ Fang, Shaohua; Wang, Guojun; Qu, Long; Luo, Dong; Yang, Li; Hirano, Shin-ichi (2015-10-20). "A novel mixture of diethylene glycol diethylether and non-flammable methyl-nonafluorobutyl ether as a safe electrolyte for lithium ion batteries". Journal of Materials Chemistry A. 3 (42): 21159–21166. doi:10.1039/C5TA05242D. ISSN 2050-7496.
^ Han, Sang-Min; Kim, Jae-Hong; Kim, Dong-Won (2014-04-16). "Evaluation of the Electrochemical Performance of a Lithium-Air Cell Utilizing Diethylene Glycol Diethyl Ether-Based Electrolyte". Journal of the Electrochemical Society. 161 (6): –856. doi:10.1149/2.022406jes. ISSN 1945-7111.

[data-1] Ku, Hsu-Chen; Tu, Chein-Hsiun (2000-03-01). "Densities and Viscosities of Seven Glycol Ethers from 288.15 K to 343.15 K". Journal of Chemical & Engineering Data. 45 (2): 391–394. doi:10.1021/je990281u. ISSN 0021-9568, 1520-5134. Retrieved 2025-12-07.

[2] Fang, Shaohua; Wang, Guojun; Qu, Long; Luo, Dong; Yang, Li; Hirano, Shin-ichi (2015-10-20). "A novel mixture of diethylene glycol diethylether and non-flammable methyl-nonafluorobutyl ether as a safe electrolyte for lithium ion batteries". Journal of Materials Chemistry A. 3 (42): 21159–21166. doi:10.1039/C5TA05242D. ISSN 2050-7496.

[3] Han, Sang-Min; Kim, Jae-Hong; Kim, Dong-Won (2014-04-16). "Evaluation of the Electrochemical Performance of a Lithium-Air Cell Utilizing Diethylene Glycol Diethyl Ether-Based Electrolyte". Journal of the Electrochemical Society. 161 (6): –856. doi:10.1149/2.022406jes. ISSN 1945-7111.

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