Ethylene dichloride (chemical formula: C2H4Cl2; Cl (CH2) 2Cl, formula weight: 98.97), o-dichloroethane, i.e., is a halogenated hydrocarbon, commonly expressed DCE. Colorless or light yellow transparent liquid Melting point -35.7 ℃, the boiling point of 83.5 ℃, density 1.235g / cm3. Chinese name dichloroethane English Dichloroethane nickname ethylene dichloride; ethylene-dichloro; hydroprene CAS Registry Number 107-06-2. . EINECS Accession No. 203-458-11 mainly used for vinyl chloride; glycol; acetic acid; ethylenediamine; tetraethyl lead; polyethylenepolyamine and materials associated benzoyl. Also used as fat; resin; rubber solvent, dry cleaners, pesticides except early Ju Su; vitamins; hormones extraction agent, wetting agent, penetrant, oil dewaxing, seismic agent, also used in the manufacture of pesticides and pest control drugs Ning ; piperazine beep piperazine raw materials. Food can be used in agriculture; grain fumigant; soil disinfectants.