tertButylperoxid

Tert-Butyl peroxide, commonly called di-tert-butyl peroxide (DTBP), is an organic peroxide featuring two tert-butyl groups linked by a peroxide (O–O) bridge. Its formula is C8H18O2 and it is typically encountered as a colorless liquid. The molecule readily undergoes homolytic cleavage of the O–O bond to yield tert-butoxy radicals, making it an effective radical initiator for various reactions.

Applications and reactivity

DTBP is used as a free-radical initiator in polymerization processes, particularly for vinyl monomers such as styrene and acrylates, where the generated radicals start chain-growth polymerization. It can also function as a curing or crosslinking agent in certain resin systems and coatings. Its usefulness stems from the relatively facile generation of reactive radical species under heating or in the presence of initiators or catalysts.

Safety and handling

DTBP is a highly energetic organic peroxide and is sensitive to heat, shock, and friction. It can decompose violently under inappropriate storage or handling conditions and may form explosive mixtures with incompatible materials. It should be stored in a cool, well-ventilated area, away from sources of ignition and reducing agents, and in containers designed for energetic materials. Use of stabilizers, inhibitors, and appropriate engineering controls is common to minimize self-initiation and runaway reactions. Handling is generally restricted to trained personnel and controlled environments.

See also

Other tert-butyl peroxides include tert-butyl hydroperoxide and related di-tert-butyl peroxide derivatives, which differ in reactivity and applications.