Carbon Tetrachloride

Carbon Tetrachloride is a toxic but very useful solvent used in brominating thiophene to 2-Bromothiophene using bromine. Carbon Tetrachloride is synthesized by adding chlorine to chloroform and iron powder. Carbon Tetrachloride is toxic to the kidneys and liver.
Properties
Chemical formula
CCl4
Molar mass
153.81 g/mol
Appearance
Colourless liquid
Odor
Sweet, chloroform-like odor
Density
1.5867 g/cm^3 (liquid)
1.831 g/cm^3 at −186 °C (solid)
1.809 g/cm^3 at −80 °C (solid)
Melting point
−22.92 °C (−9.26 °F; 250.23 K)
Boiling point
76.72 °C (170.10 °F; 349.87 K)
Solubility in water
0.097 g/100 mL (0 °C)
0.081 g/100 mL (25 °C)
Solubility
Soluble in alcohol, ether, chloroform, benzene, naphtha, CS2, formic acid

I brominated thiophene to 2-Bromothiophene with bromine in Carbon Tetrachloride.