ethylene glycol

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ethylene glycol:

see glycolglycol
, dihydric alcohol in which the two hydroxyl groups are bonded to different carbon atoms; the general formula for a glycol is (CH2)n(OH)2.
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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Ethylene Glycol


(also 1,2-ethanediol), HOCH2CH2OH, the simplest of the glycols.

Ethylene glycol takes the form of a colorless, viscous liquid with a sweet taste. It has a melting point of – 12.3°C, a boiling point of 196°C, and a density of 1.113 g/cm3 at 20°C. Miscible in all proportions with water, alcohol, and acetone, it is poorly soluble in ether and insoluble in chloroform, aliphatic hydrocarbons, and aromatic hydrocarbons. Ethylene glycol is hygroscopic.

An important property of ethylene glycol is its capacity to produce a marked lowering of the freezing point of water. A 40-percent solution of ethylene glycol in water has a freezing point of – 25°C, and a 60-percent solution has a freezing point of – 40°C. For this reason, ethylene glycol is commonly used in the manufacture of antifreezes.

Similar to other dihydric alcohols, ethylene glycol forms monoglycolates and diglycolates (such as HOCH2CH2ONa and NaOCH2CH2ONa), ethers, and esters. Among the other derivatives of ethylene glycol are cellusolves (the monoethers HOCH2CH2OR, where R is a hydrocarbon) and polyesters, including polyethylene terephthalate, that have the general formula (—OCH2CH2OCO—R—CO—)n; cellosolves are used as solvents, and ethylene glycol polyesters are used in the preparation of Dacron and similar synthetic fibers (seeLAVSAN and POLYESTER FIBER). Nitroglycol, a diester of ethylene glycol and nitric acid, is an explosive.

The principal industrial method for the production of ethylene glycol is the hydration of ethylene oxide at a pressure of 10 atmospheres and a temperature of 190°-200°C (or at 1 atmosphere and 50°-100°C) in the presence of 0.1–0.5 percent sulfuric or ortho-phosphoric acid; diethylene glycol and a small quantity of higher polymeric homologues of ethylene glycol are formed as by-products in this process. Ethylene glycol is used on a limited scale as a solvent for printer’s inks and certain other dyes, and it is used in the production of various inks, including inks for ball-point pens. It is also used in organic synthesis. Ethylene glycol is toxic.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

ethylene glycol

[′eth·ə·lēn ′glī‚kȯl]
(organic chemistry)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

ethylene glycol

A type of alcohol, completely miscible in water, used in latex and water-based paints to provide stability when frozen; used in heating and cooling systems as a fluid for transferring heat.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Introduction of diglycol adipate segments to the chains improved the flexibility and increased the tensile strength and strain at break of ExtPEEAs.
Polyallyl diglycol carbonate ([C.sub.12][H.sub.18][O.sub.7], [rho] =1310kg/[m.sup.3]) is a thermoset polymer [1].
Plastik (organik) gozluk camlari ve ozellikleri Plastik (Organik) Gozluk Camlari Materyel Refraktif Abbe endis sayisi ([n.sub.d]) CR 39 (Allyl 1,5 58 diglycol carbonate) -ADC- CR 39 1,5 57 Yuksek endisli MR 6 1,6 36-37 organik camlar MR 7 1,665 32 MR 8 1,74 33 Polikarbonat 1,586 30-31 (Bifenol A) Trivex 1,532 43-45 Materyel Camin ozelligi CR 39 (Allyl diglycol Tek monomerin 500 ile 1000 isi altinda, 8 carbonate) -ADC- ile 20 saatte polimerize olmasiyla elde edilir --Columbia Recinesi (CR), 39.
Doppler broadening positron annihilation technique (DBPAT) provides direct information about the change of core and valance electrons in Polyallyl diglycol carbonate (CR-39).
INCI name: Mica (and) silica (and) water (and) ethoxy diglycol (and) barium sulthte (and) peat extract (and) palmitoyl hexapeptide14 (and) gold (and) hydrolyzed wheat protein (and) phenoxyethanol (and) caprylyl glycol (and) potassium sorbate (and) hexylene glycol