TRICHLOROETHYLENE - CHINA
CAS number: 79-01-6
EC number: 201-61-04
RTECS number: KX4550000
ATC code: N01AB05
Molecular formula: C2HCl3
Molar mass: 131.39 g mol-1
Appearance: Colorless liquid
Density: 1.46 g / cm3 (20 ° C)
Melting point: -73 ° C, 200 K, -99 ° C
Boiling point: 87.2 ° C, 360K, 189 ° F ()
Solubility in water: 1.280 g / L
Solubility: ether, ethanol, chloroform
Refractive index (nD): 1.4777 at 19.8 ° C
Auto-ignition temperature: 420 ° C
Trichlor ethylene with a chemical formula C2HCl3 is a toxic, photoreactive, non-flammable chloroform-flavored liquid. This liquid, which is denser than water, dissolves in water with a small amount, while dissolution occurs easily with organic solvents. Its use is less because of its poisonous concern. Its use in foods, medicines and cosmetics is prohibited. Trichlorethylene, which was first prepared in 1864, started to be produced in Europe in the early 1900s and has come to this day.
Production and Reactions
It can be produced by chlorination of ethylene or ethylene dichloride.
1,1,2,2-tetrachloride can be obtained by reacting ethane with bases such as dilute sodium hydroxide or potassium hydroxide.
Trichlorethylene is first converted to pentachlor ethane by reaction with chlorine, followed by reaction of pentachloroethane with sodium hydroxide or potassium hydroxide or by heating in the presence of a catalyst.
It is used for extracting the aroma of spices and for decaffeinating the coffee to extract vegetable oils from soy, coconut and palm in food.
It is used as an industrial solvent in extraction processes.
It is used for dilution in adhesives in this sector.
It is used as a chain terminator in PVC production.
It is used as a solvent in the production of adhesives.
Trichloroethylene is preferred in this sector until 1950s and replaced with tetrachloride.
It is used in liquid oxygen spraying processes in aviation industry.