C2H2Br4

C2H2Br4, also known as 1,1,2,2-tetrabromoethane, is a dense, colorless liquid with a sweet odor. It has the chemical formula C2H2Br4. This compound is a halogenated hydrocarbon and is characterized by the presence of four bromine atoms bonded to two carbon atoms. It is insoluble in water but soluble in organic solvents such as ethanol and ether.

1,1,2,2-tetrabromoethane is a relatively stable compound under normal conditions. However, it can decompose when exposed to heat or light, releasing toxic fumes of hydrogen bromide. Due to its high density, it has been used in laboratory settings for separating minerals based on their specific gravity. It can also be employed as a solvent for certain materials that are not soluble in common organic solvents.

The synthesis of 1,1,2,2-tetrabromoethane typically involves the bromination of acetylene. This reaction results in the addition of bromine across the triple bond of acetylene. The compound has a relatively high boiling point and a low melting point. It is important to handle C2H2Br4 with care as it is considered to be toxic and an irritant.