Diethylene Glycol (DEG)

Diethylene glycol (DEG) is an organic compound with the formula (HOCH2CH2)2O. It is a colorless, practically odorless, poisonous, and hygroscopic liquid with a sweetish taste. It is miscible in water, alcohol, ether, acetone, and ethylene glycol. DEG is a widely used solvent.


Melting Point−10 °C
Boiling Point245 °C
Flash Point143 °C
Density1.118 g/mL at 25 °C

Uses and Applications

Key applications

  • Solvents


  • Coatings & Construction
  • Polymers

Synonyms: 1,5-Dihydroxy-3-oxapentane I 2,2'-dihydroxydiethyl ether I 2,2'-Oxydiethanol

Chemical Formula: C4H10O3

CAS Number: 111-46-6