Dichloroethane


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Dichloroethane

 

(also called ethylene chloride), ClCH2CH2C1, a colorless, mobile liquid with a smell similar to that of chloroform. Melting point, -35.9° C; boiling point, 83.5° C; density, 1.2600 g/cm3 (15° C); n15v 1.4476; flash point (open cup), 21.1° C; explosion limits in air, 6.20-15.90 percent by volume. It is poorly soluble in water (0.81 percent at 25° C) and forms an azeotrope with it (boiling point, 71.5° C; 82.9 percent dichloroethane).

Upon hydrolysis, dichloroethane yields ethylene glycol, HOCH2CH2OH. Vinyl chloride is produced upon pyrolysis or reaction with alkalies; with ammonia it gives ethylenediamine. Polysulfide rubber is produced upon heating with sodium polysulfide. Dichloroethane is made by treating ethylene with chlorine.

Dichloroethane is toxic. The maximum permissible concentration of vapor in air is 0.01 percent. It is widely used as a solvent in various industries and as a component of antiknock mixtures. It is also a fumigant and a raw material for making polysulfide rubber.

References in periodicals archive ?
The elution was started with dichloroethane with subsequent stepwise increase of methanol content in the system.
Earlier in January, there was a case of Dichloroethane leakage in the Polimeri plant, which led to the declaration of partial state of alert which is still in force.
EPA 8240-B method (Anonymous, 1994) was used for determination of tetrachloroethane, THM and 1-2 dichloroethane.
Problems of occupational hygiene in the use of dichloroethane in the aviation industry.
Dichloroethene and dichloroethane could be degradation products of tetrachloroethene and trichloroethane and, in fact, were found only at sites where one of the latter also was found.
Thin films used for electron microscopy measurements were prepared by casting their 1% (by weight) dichloroethane solutions.
About 20 of the homes had 1,2 dichloroethane and 1,4 dichlorobenzene and other volatile compounds at more than 100 times the EPA's screening levels.
The per iodide crystals were dissolved in 9 ml of 1, 2- dichloroethane and absorbance was measured at 365 nm after 2 h incubation.
A prospective study of 802 infants found that although higher transplacental exposure to PCBs was associated with lower Bayley psychomotor scores at 6 and 12 months of age, such an association was not present in children exposed to PCBs or dichloroethane (DDE) via breast milk (Gladen et al.
Industrial processes such as painting, solvent degreasing, printing, dry-cleaning, polymer synthesis and fibre spinning from solution involve the use of larger amounts of solvents such as toluene, xylene, dichloroethane, trichloroethane, dichloromethane and acetone, which contribute to the air pollution in the United States (Lahiere et al.