Tetrabromomethane, also known as carbon tetrabromide (CBr₄), is primarily utilized as a brominating agent in organic synthesis. It is commonly employed in reactions such as the Corey-Fuchs reaction, where it converts aldehydes to 1,1-dibromoalkenes, which can be further transformed into terminal alkynes. Additionally, it serves as a source of bromine radicals for various synthetic transformations, including the introduction of bromine into organic compounds. In analytical chemistry, its high density makes it useful as a solvent for density gradient separations or as a reference material. Historically, it has been used in fire extinguishers as a flame suppressant. However, its use is restricted due to toxicity, potential for ozone depletion, and environmental concerns, prompting the development of safer alternatives.