Monoethylene Glycol

Monoethylene Glycol/ Ethylene Glycol (C2H6O2) is a clear, colourless, odourless, slightly viscous liquid. It is miscible with water, alcohol, and many organic compounds, and has the formula C2H6O2. It is the most important of the commercially available ethylene glycols as it has many industrial applications. Monoethylene Glycol is produced by the oxidation of ethylene at a high temperature in the presence of a silver oxide catalyst. The ethylene oxide is then hydrated to yield mono ethylene glycol with di and tri ethylene glycols as co-products.

Monoethylene Glycol is a vital ingredient in the production of polyester fibres, films, and resins, one of which is polyethylene terephthalate (PET). PET is used for making of plastic bottles. Ethylene Glycol has renowned antifreeze applications, being a major component in the manufacture of antifreeze, coolants, and de-icing liquids. Humectant properties make it ideal for use in the fibre treatment of textiles, pulp and paper industry, in adhesives, inks, and cellophane. It is also a used as a dehydration agent in natural gas pipelines, inhibiting the formation of natural gas clathrates before being recovered from the gas and reused.

C2H4O + H2O -> C2H6O2

Key Features and Benefits

  • Versatile intermediates
  • Low volatility
  • Low boiling point
  • Completely miscible with water

Physicochemical Data

Properties Typical Value
Form Clear liquid
Appearance Colourless
Odour Odourless
CAS No. 107-21-1
Monoethylene Glycol Content 99.5% min.
Solubility Completely soluble with water

Application Areas

Chemical Intermediate

  • Solvents
  • Polyester resins
  • Resin esters as plasticizers
  • Alkyd-type resins


  • Textile fibers
  • Paper
  • Leather
  • Adhesives
  • Glue

Solvent Coupler

  • Stabilizer against gel formation
  • Freezing Point Depression
  • Deicing fluids
  • Heat transfer fluids (gas compressors, heating, ventilating, air conditioning, process chillers, ice rinks)
  • All-weather automotive antifreeze and coolants
  • Water-based formulations (adhesives, latex paints, asphalt emulsions)