Tribromoethylene is a bromoalkene and a trihaloethylene with the chemical formula C2HBr3.

It can be made from 1,1,2,2-tetrabromoethane.

[3] Tribromoethylene reacts with potassium hydroxide to yield dibromoacetylene via dehydrobromination,[4] this reaction is analogous to the synthesis of dichloroacetylene from trichloroethylene.

Tribromoethylene reacts with nitric acid to form dibromoacetic acid.

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