Ethylene Glycol (MEG)
Application | ||
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Ethylene Glycol’s major end uses are as an antifreeze, which accounts for more than 50% of ethylene glycol’s commercial use, and as raw material in the production of polyester fibers and plastics, mainly PET, which accounts for 40% of total ethylene glycol consumption. Because this material is cheaply available it finds many niche applications. Ethylene glycol is a medium for convective heat transfer in automobiles and liquid cooled computers. It is also commonly used in chilled water air-conditioning systems that place either the chiller or air handlers outside, or systems that must cool below the freezing temperature of water. In geothermal heating/cooling systems, ethylene glycol is the fluid that transports heat through the use of a geothermal heat pump. The ethylene glycol either gains energy from the source, or dissipates heat to the source, depending if the system is being used for heating or cooling |
Description | ||
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Ethylene Glycol (MEG) is a toxic, colorless, practically odorless, low-volatility, low-viscosity, hygroscopic liquid. It is completely miscible with water and many organic liquids. The hydroxyl groups on glycols undergo the usual alcohol chemistry, giving a wide variety of possible derivatives. This chemistry permits ethylene glycol to act as an intermediate in a wide range of reactions. Especially significant is resin formation, including the condensation with dimethyl terephthalate or terephthalic acid resulting in a polyester resin (PET) for soft drinks and food packaging. The widespread use of ethylene glycol as an antifreeze is based on its ability to lower the freezing point when mixed with water. The physical properties of ethylene glycol-water mixtures are therefore extremely important. Ethylene glycol has numerous end uses that include the production of polyester fibers and resins, as an additive in chilled water air-conditioning systems, geothermal heating/cooling systems, and as an important precursor to polyester fibers and resins in the plastics industry. |
Product Properties
Set 1
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g/cm3
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Documents
Product Champions
General Info
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Published | ||
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Sep 04, 2022 |
Last Edited | ||
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Sep 04, 2022 |
Categories | ||
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Chemicals |
