ethylene glycol

Also found in: Dictionary, Thesaurus, Medical, Acronyms, Wikipedia.

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.
..... Click the link for more information.

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.


ethylene glycol

[′eth·ə·lēn ′glī‚kȯl]
(organic chemistry)

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.
References in periodicals archive ?
Company snapshots, including company overview, business description and information on current and upcoming Ethylene Glycol (EG) plants
Obtain up-to-date information on Japan's Ethylene Glycol (EG) industry
Ethylene glycol increases the elongation at break to at least 680%, for 8 wt% ethylene glycol, and rises up to 1658% for higher content, while that of the pure latex shows an elongation at break of 483%.
Ethylene glycol poisoning presenting with a falsely elevated lactate level.
Ethylene glycol accounted for ten of the toxic alcohol levels.
2 million tonnes of various petrochemical products, including one million tonnes of ethylene and other downstream products such as polyethylenes, ethylene glycol, polypropylene (PP), butadiene, phenol and butene-1.
Researchers have developed a new catalyst that converts cellulose--the most common form of biomass--directly into ethylene glycol, an important intermediate product for the chemical industry.
Dubai, 18 Sept: Saudi Basic Industries Corporation (Sabic) affiliate, Yanbu National Petrochemical Company (Yansab) has made its first export shipment of ethylene glycol from its new petrochemical venture in Saudi Arabia, Yansab said in a statement.
Farsa-Shimi Company is to produce various types of ethylene glycol by the private sector`s 100 per cent participation.
Ethylene glycol and methanol are alcohols that are commonly found in antifreeze.

Full browser ?