Di-tert-butyl peroxide is a chemical compound commonly used as a radical initiator in polymerization processes. It is an organic peroxide, which means it contains a peroxide group (–O–O–) that can easily break down to release free radicals. These free radicals are essential for starting chemical reactions, particularly in the production of plastics and other synthetic materials. This compound is typically a colorless liquid with a strong odor and is known for its stability under normal conditions. However, it can be hazardous if not handled properly, as it can cause skin irritation and is flammable. Safety precautions are essential when working with di-tert-butyl peroxide in industrial settings.