1,1-Dichloroethylene

CAS RN:75-35-4

Reactivities / Incompatibilities

Incompatible materials: Oxidizing agents, copper, aluminum, and its alloys, peroxides, strong bases, oxygen.
At ambient temperature, perchloryl fluoride is unreactive with 1,1-dichloroethylene, but reaction is explosive at 100-300 deg C, or if the mixture is ignited.
Condensation of trichlorotrifluoroethylene and 1,1-dichloroethylene at 180 deg C under pressure to give 1,1,2-trichloro-2,3,3-triflurorocyclobutane was effected smoothly several times in a 1 L autoclave. Scaling up to a 3 L preparation led to uncontrolled polymerization which distorted the larger autoclave.
A coating of vinylidine chloride polymer on the inside of a 2-inch pipe exploded when the pipe touched a fitting on a tank car.
Mixing vinylidene chloride and chlorosulfonic acid in a closed container caused the temperature and pressure to increase.
Mixing vinylidene chloride and 70% nitric acid in a closed container caused the temerature and pressure to increase.
Mixing oleum and vinylidene chloride in a closed container caused the temperature and pressure to increase.
Aluminum, sunlight, air, copper, heat [Note: Polymerization may occur if exposed to oxidizers, chlorosulfonic acid, nitric acid, or oleum. Inhibitors such as the monomethyl ether of hydroquinone are added to prevent polymerization].
Potentially explosive reaction with chlorotrifluoroethylene at 180 deg C. Reaction with ozone forms dangerous products. Explosive reaction with perchloryl fluoride when heated above 100 deg C. ... Reacts violently with chlorosulfonic acid, /nitric acid/ oleum. Can react vigorously with oxidizing materials.
May form organic peroxides following prolonged contact with air. May react with aluminum and its alloys.
... Violent polymerization ... under the influence of oxygen, sunlight, alkali metals; aluminum, copper.
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