1,1-Dichloroethane

1,1-Dichloroethane
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IUPAC name	1,1-Dichloroethane
Other names	ethylidene dichloride ethylidene chloride CFC-150a 1,1-DCA
Identifiers
CAS number	75-34-3
SMILES	CC(Cl)Cl
Properties
Molecular formula	C2H4Cl2
Molar mass	98.96 g/mol
Density	1.2 g/cm³
Melting point	-97 °C
Boiling point	57.2 °C
Related Compounds
Related compounds	1,2-Dichloroethane (ethylene dichloride); *1,1-Dichloroethene
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

1,1-Dichloroethane is a chlorinated hydrocarbon. It is a colorless oily liquid with a chloroform-like odor. It is not easily soluble in water, but miscible with most organic solvents.

Large volumes of 1,1-dichloroethane are manufactured, with annual production exceeding 1 million pounds in the United States. It is mainly used as a feedstock in chemical synthesis, chiefly of 1,1,1-trichloroethane. It is also used as a solvent for plastics, oils and fats, as a degreaser, as a fumigant in insecticide sprays, in halon fire extinguishers, and in cementing of rubber. It is used in manufacturing of high-vacuum resistant rubber and for extraction of temperature-sensitive substances. Thermal cracking at 400-500 °C and 10 MPa yields vinyl chloride. In the past, 1,1-dichloroethane was used as a surgical inhalational anesthetic.

In the atmosphere, 1,1-dichloroethane decomposes with half-time of 62 days, chiefly by reaction of photolytically produced hydroxyl radicals.