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Ethylene glycol (IUPAC name: ethane-1,2-diol) is an organic compound (a vicinal diol [7]) with the formula (CH 2 OH) 2. It is mainly used for two purposes: as a raw material in the manufacture of polyester fibers and for antifreeze formulations.
The toxic effects of ingesting ethylene glycol occur because it is converted by the liver into 4 other chemicals that are much more toxic. The lethal dose of pure ethylene glycol is 1.4 ml/kg (3 US fluid ounces (90 ml) is lethal to a 140-pound (64 kg) person) but is much less lethal if treated within an hour. [9] (see Ethylene glycol poisoning).
This page provides supplementary chemical data on ethylene glycol. ... Temperature dependence of ethylene glycol vapor pressure. Uses formula ...
Examples include ethane-1,2-diol or ethylene glycol HO−(CH 2) 2 −OH, a common ingredient of antifreeze products. Another example is propane-1,2-diol, or alpha propylene glycol, HO−CH 2 −CH(OH)−CH 3, used in the food and medicine industry, as well as a relatively non-poisonous antifreeze product.
Diethylene glycol is one of several glycols derived from ethylene oxide. Glycols related to and co-produced with diethylene glycol and having the formula HOCH 2 CH 2 (OCH 2 CH 2) n OH are: n = 0 ethylene glycol ("antifreeze"); monoethylene glycol MEG; n = 1 DEG; n = 2 triethylene glycol, TEG, or triglycol; n = 3 tetraethylene glycol; n = 4 ...
Ethylene glycol (EG) fluids are still in use for aircraft deicing in some parts of the world because it has a lower operational use temperature (LOUT) than propylene glycol (PG). However, PG is more common because it is less toxic than ethylene glycol. [6]: 2–29 [2]
Waterless coolant is a glycol-based liquid substance that does not contain water. Its boiling point of 191 °C (375 °F) is higher than that of water-based coolants and it resists the formation of corrosion. [1] The substance was invented to circumvent the problems of vaporizing water.
Typical formulations include a surfactant, water softener, and an antifreeze (but not glycol based as in coolants). Alkyl sulfates and fatty alcohol ethers are typical surfactants. [3] Dilution factors will vary depending on season, for example in winter, the dilution factor may be 1:1, whereas during summer the dilution factor may be 1:10.
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