What is "hexachlorobutadiene"

n. (context organic compound English) A chlorinated aliphatic diene with a turpentine odour, most commonly used as a solvent for other chlorine-containing compounds.

Hexachlorobutadiene, ClC=C(Cl)C(Cl)=CCl, is a colorless liquid at room temperature that has an odor similar to that of turpentine. It is a chlorinated aliphatic diene with niche applications but is most commonly used as a solvent for other chlorine-containing compounds.