Mono ethylene glycol (MEG) is a colourless, odourless, stable liquid with a high boiling point and low viscosity. It is a member of a homologous series of dihydroxyalcohols.
It is miscible with water, alcohols, aldehydes and most organic compounds. Its chemical properties are similar to those of di ethylene glycol (DEG) and tri ethylene glycol (TEG) with some slight differences in viscosity, hygroscopicity and boiling point. It is produced by the hydration of ethylene oxide.
Synonyms: 1,2-Dihydroxyethane; 1,2-Ethanediol; 1,2-Ethandiol; Ethylene dihydrate; Glycol alcohol; Ethylene glycol; Tescol
Applications of Mono Ethylene Glycol
Mono ethylene glycol, like other glycols, is used widely in industry because of its high boiling point and its solvent and other useful properties including hygroscopicity, non-corrosiveness, freeze point depression, lubricating and plasticizing properties. It reacts readily, making it a popular intermediate for making a number of esters.
Mono ethylene glycol is an important raw material in many industrial applications including the production of polyester fibres, polyethylene terephthalate (PET) plastics, coolants in antifreeze, and resins. Its hygroscopic properties also make it ideal for use in the treatment of fibres, paper, adhesives, printing inks, leather and cellophane.
Storage and Handling
Mono ethylene glycol should be stored between 2-8°C, in a well-ventilated area away from sources of ignition. The product must not be stored near food, drugs or potable water supplies. Avoid contact with strong oxidizing agents and bases as mono ethylene glycol is incompatible with these materials.
Ingestion of large amounts of mono ethylene glycol may cause kidney and liver degeneration and even death. The liquid is a skin and eye irritant. Avoid contact with the skin, eyes and clothing by ensuring that appropriate measures are observed to avoid unnecessary exposure. This may include splash protection, the wearing of impervious boots, gloves and clothing, safety glasses or goggles, depending on the task being carried out. Inhalation of the vapour should be minimised with proper engineering controls and ventilation. Inhalation of the heated vapour should be avoided by use of an approved respirator.