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Ethylene glycol is used as a precursor for the syntheses of polymers like polyester fibers, resins and polyethylene terephthalate, which finds application in making plastic bottles. It acts as an intermediate in the synthesis of 1,4-dioxane. It plays an important role in organic synthesis as a protecting group for carbonyl groups. It is a useful desiccant due to its high boiling point and affinity towards water. It plays an important role to remove water vapor from natural gas before proceeding for further processes. Its major application is as a medium for convective heat transfer in automobiles and liquid cooled computers.
For examples of use in acetal (1,3-dioxolane) formation, catalyzed by tosic acid with azeotropic water removal, see: Org. Synth. Coll., 6, 567 (1988); 7, 241, 271 (1990). A mild dehydrating agent, e.g. triethyl orthoformate may be used as an alternative: J. Org. Chem., 48, 2122 (1983). PPTS (Pyridinium p-toluenesulfonate, A15708) has been recommended as a catalyst for the formation and cleavage of ethylene acetals, being less likely to cause acid-catalyzed rearrangements than tosic acid itself: Synthesis, 724 (1979). For acetalization of ɑß-enals, tartaric acid in the presence of anhydrous MgSO4 gives good results: J. Org. Chem., 60, 2931 (1995). Review of the preparation of acetals: Synthesis, 501 (1981). See also 2,2-Dimethyl-1,3-dioxolane, L00482.
In combination with TMS chloride, ɑß-enones are converted to ß-chloro acetals in one step: Tetrahedron Lett., 25, 3805 (1984).
Pluta, M.; Piorkowska, E. Tough and transparent blends of polylactide with block copolymers of ethylene glycol and propylene glycol. Polym. Test. 2015, 41, 209-218.
Zahmatkesh, H. G,, Javanbakht, M.; Ghaemi, M. Ethylene glycol-assisted hydrothermal synthesis and characterization of bow-tie-like lithium iron phosphate nanocrystals for lithium-ion batteries. J. Power Sources 2015, 284, 339-348.
Gefahrenhinweise (EU): H302-H373
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