Mono ethylene glycol

What is Mono ethylene glycol


Mono ethylene glycol (MEG), by far the largest volume glycol, is produced by the direct hydration of ethylene oxide (EO). Smaller amounts of DEG and TEG are co-produced in this process, although additional quantities of DEG and TEG can be produced by further reacting MEG with additional EO.

The three ethylene glycols are colourless, essentially odourless stable liquids with low viscosities and high boiling points and have many similar chemical properties. Differences in their applications are due mainly to variations in physical properties such as viscosity, hygroscopicity and boiling point.

Glycols are widely used in industry because of their high boiling points, hygroscopicity, non-corrosiveness, freeze point depression, lubricating, plasticising and solvent properties. Additionally, their ease of chemical reaction, due to their alcohol end groups, makes them popular intermediates in the formation of numerous esters.


Mono ethylene glycol is a chemical substance that is produced by the reaction of ethylene or ethylene oxide for your information Mono ethylene glycol is miscible in ethanol, acetone and water.

It is used as a corrosion inhibitor in antifreeze and in coolants, and in the manufacturing of polyester.

Actualy Mono-ethylene glycol – or MEG – is a vital ingredient for the production of polyester fibres and film, polyethylene terephthalate (PET) resins and engine coolants.



End uses for MEG:


Range from clothing and other textiles, through packaging to kitchenware, engine coolants and antifreeze. Polyester and fleece fabrics, upholstery, carpets and pillows, as well as light and sturdy polyethylene terephthalate drink and food containers originate from ethylene glycol. The humectant (water attracting) properties of MEG products also make them ideal for use in fibres treatment, paper, adhesives, printing inks, leather and cellophane.



Petro explains Mono Ethylene Glycol (MEG)


Mono Ethylene Glycol is used as solvent couplers, chemical intermediates for resins, and humectants. Apart from this, it also plays a crucial role in the production of coolants, antifreeze and solvents. It is slightly viscous in nature and shows miscibility with alcohols, water, and aldehydes. It proves too harmful if swollen by animals or human beings. It is transported or stored in stainless steel tanks to prevent contamination with iron. During shipping, the tanks are properly dried and nitrogen purging is done to ensure that any remains for chloride, ashes, or iron are removed.


Product description Monoethylene Glycol

Most common applications:

  • Manufacture of polyester as Polyethylene Terephthalate (PET)
  • Antifreeze
  • Corrosion inhibitors in coolants


Other names:


  • Ethylene Glycol (EG)
  • Hypodicarbonous Acid
  • Monoethylene Glycol
  • Ethanediol
  • 1,2-Dihydroxaethane
  • 1,2-Ethanediol
  • Ethane-1,2-diol
  • Ethylene alcohol
  • Ethylene Oxide Hydrate
  • Glycol
  • Genantin
  • Glysantin

Molecular formula:

  • C2H6O2

CAS number:

  • 107-21-1


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