Asobisobutüronitriili

Asobisobutüronitriili, often abbreviated as AIBN, is an organic compound with the chemical formula (CH3)2C(CN)CH(CN)C(CH3)2. It is a white crystalline solid and is commonly used as a free radical initiator in polymer chemistry. AIBN is a derivative of azobisisobutyric acid. Its primary application lies in its ability to decompose upon heating to produce nitrogen gas and two isobutyronitrile radicals. These radicals are then capable of initiating free radical polymerization reactions of various monomers, such as styrene, methyl methacrylate, and vinyl chloride. The decomposition of AIBN is relatively predictable, occurring at specific temperatures, which makes it a reliable initiator for controlled polymerization processes. The rate of decomposition is influenced by temperature and solvent. AIBN is soluble in many organic solvents but is generally insoluble in water. Due to its role in initiating polymerization, it is a crucial component in the synthesis of many common plastics and polymers. Proper handling and storage are necessary as AIBN can decompose exothermically and should be kept away from heat and ignition sources.