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Ethylene Glycol is a clear, sweet, slightly viscous liquid. Its most common use is as an automotive antifreeze and serving as an excellent coolant in automotive radiators. Ethylene glycol is highly poisonous; animals or humans that drink the solution become very ill and may die.
Ethylene glycol also is used as a raw material in the production of a wide range of products including polyester fibers for clothes, upholstery, carpet and pillows; fiberglass used in products such as jet skis, bathtubs, and bowling balls; and polyethylene terephthalate resin used in packaging film and bottles. Many of these products are energy saving and cost efficient as well as recyclable.
Monoethylene Glycol (MEG) is the most widely used chemical from the Glycol family. It is an essential raw material for Polyester fibers and Polyethylene Terephthalate (PET) polymer. MEG based products are also used as coolants in automobile antifreeze, resins, humectants for paper, etc.
Diethylene Glycol (DEG) is a colorless, practically odorless, and hygroscopic liquid with a sweetish taste. It is miscible in water, alcohol, ether, acetone, and ethylene glycol is a widely used solvent. It is used in the manufacture of resins, polyurethanes, plasticizers, and is also used as a solvent for dyes and oils. DEG can be found in products such as tobacco, cork, ink, glue, brake fluid, lubricants, and cosmetics.
Triethylene Glycol (TEG) is prepared commercially as a co-product of the oxidation of ethylene at high temperature, in the presence of a silver oxide catalyst. The main uses for TEG are based upon its hygroscopic quality. It is used as a dehydrating agent for natural gas pipelines where it removes the water from the gas before being condensed and reused in the system. It is also a dehumidifying agent in air-conditioning units. It is also used to make chemical intermediates such as plasticizers and polyester resins. It is an additive in hydraulic fluids and brake fluids, and is also used as a solvent in many applications, including as a selective solvent for aromatics, and a solvent in textile dyeing.
PEG 400 is used as an inactive ingredient in the pharmaceutical industry as a solvent, plasticizer, surfactant, ointment and suppository base, and tablet and capsule lubricant. PEG 400 can be supplied both in liquid form and for pharmaceutical uses.
