2,2′-Azobis(2-methylpropionitrile) AIBN CAS 78-67-1
AIBN is an azo-type organic compound supplied as a pale yellow to white crystalline powder. It thermally decomposes to generate stable carbon-centered radicals and nitrogen gas, providing a controllable radical source for free-radical polymerizations, crosslinking, graft polymerizations and laboratory radical chemistry. AIBN is processed under temperature-controlled, inert and moisture-restricted conditions to ensure safety and predictable initiation performance.
Applications
- Free-radical polymerization initiator
AIBN thermally generates radicals used to initiate bulk, solution, suspension and emulsion polymerizations of vinyl monomers where a predictable initiation temperature and radical flux are required. - Crosslinking and curing
Used as a thermal radical source to cure or crosslink thermosets, elastomers and coatings at controlled temperatures, enabling tailored network formation. - Graft polymerization and surface modification
Applied in grafting reactions to functionalize polymer backbones or surfaces (e.g., grafting polar monomers onto polyolefins) for adhesion, compatibilization or property tuning. - Laboratory reagent and R&D
Common laboratory initiator for small-scale polymer synthesis, mechanistic studies and controlled radical reactions; used where AIBN’s decomposition profile and solubility fit the chemistry.
