Triethylene Glycol (TEG)

Triethylene glycol, TEG, or triglycol is a colorless odorless viscous liquid with molecular formula HOCH2CH2OCH2CH2OCH2CH2OH. It is used as a plasticizer for vinyl polymers. It is also used in air sanitizer products, such as "Oust"[1] or "Clean and Pure". When aerosolized it acts as a disinfectant. Glycols are also used as liquid desiccants for natural gas and in air conditioning systems. It is an additive for hydraulic fluids and brake fluids and is used as a base for "smoke machine" fluid in the entertainment industry


Molar Weight402.6 g/mol
Melting Point−7 °C
Boiling Point285 °C
Density1.1255 g/mL
FormsOdourless, Liquid (clear)

Uses and Applications

Key applications

  • Fungicide
  • Resins
  • Adhesives and Sealants
  • Fuel additive
  • Agricultural
  • Solvents
  • Household industrial


  • Oil & Gas

Synonyms: Triglycol

Chemical Formula: C6H14O4

CAS Number: 94-28-0