(redirected from trichlorethylene)
Also found in: Dictionary, Thesaurus, Medical.


(organic chemistry)
CHCl:CCl2 A heavy, stable, toxic liquid with a chloroform aroma; slightly soluble in water, soluble with greases and common organic solvents; boils at 87°C; used for metal degreasing, solvent extraction, and dry cleaning and as a fumigant and chemical intermediate.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



(CC12ᆖCHCl), a colorless liquid with an odor resembling that of chloroform. Boiling point, 87.2°C; density, 1.465 g/cm3 at 20°C.

Trichloroethylene is poorly soluble in water (0.11 g per 100 g at 25°C) and forms azeotropic mixtures with water (boiling point, 73.6°C; 5.4 percent water), methyl and ethyl alcohols, and acetic acid. Upon prolonged storage in the light, trichloroethylene is gradually oxidized by atmospheric oxygen to phosgene, COCl2. Upon exposure to concentrated nitric acid, trichloroethylene forms chloropicrin, CC13NO2, and other substances. The principal industrial method of obtaining trichloroethylene is the dehydrochlorination of symmetrical tetrachloroethane by boiling with lime or by pyrolysis at 400°–500°C.

Trichloroethylene has high dissolving power; it readily dissolves fats, waxes, resins, rubber, sulfur, and phosphorus. It also has a low boiling point and insignificant toxicity, and it is incombustible. Therefore, it is widely used in the removal of fat from fabrics and hides, the degreasing of metals, and the extraction of fats and oils from natural raw materials, as well as for dry-cleaning of clothing. The maximum permissible concentration of trichloroethylene fumes in the air is 0.05 mg per liter.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The investigation of the mental effects of trichlorethylene. Ergonomics 13:580-586.
Halothane was very expensive (8) compared with ether and trichlorethylene, by about a factor of 15, and initially some hospitals would not buy it, or rationed it.
Later, a school spokesman said: "The individual is said to have neutralised the girls with a trichlorethylene spray.
Anyone who has ever used a vapour degreaser based on one of the chlorinated hydrocarbon solvents, such as trichlorethylene, will realise how difficult it is going to be to replace it.
Determination of trichlorethylene metabolites in rat liver homogenate using headspace chromatography.
In recent times the most popular solvent used for vapour degreasing has been Trichlorethylene (Trike).
In the following article, Bill Lambert, managing director of Kerry Ultrasonics, examines the legal position of Trichlorethylene and outlines ways in which companies currently relying on this solvent for degreasing applications can respond to legally-imposed restrictions.
A major seminar on the subject of Trichlorethylene is to be held on April 10th 2002 Birmingham.
THE INCREASING demands placed on industry to achieve higher and higher standards of environmental care, especially those associated with ISO 14001, has led to the development by Airflow Product Finishing of an alternative dip-cleaning plant to replace conventional trichlorethylene solvent processes.