2,2'-Azobis(2-methylpropionitrile)

Azobisisobutyronitrile (AIBN) is a white to off-white crystalline solid with a faint, chloroform-like odor; it decomposes exothermically above 65 °C and is sparingly soluble in water but readily soluble in common organic solvents. It is classified as an organic azo compound and a thermally labile free-radical initiator. AIBN is primarily used as a radical initiator in polymerization reactions—especially for vinyl monomers such as styrene, acrylates, and methacrylates—to produce plastics, resins, and synthetic rubbers. Its principal applications are in the polymer industry for manufacturing adhesives, coatings, impact modifiers, and specialty elastomers.

2,2'-Azobis(2-methylpropionitrile) is used as an initiator in polymer radical polymerization because its molecules can easily undergo split reactions and form molecules with high activation energy. 2,2'-Azobis(2-methylpropionitrile) (AIBN) is the most commonly used azo initiator. Its characteristic is that the decomposition reaction is relatively stable, only one kind of free radical is generated, and basically no induced decomposition occurs, so it is often used in the kinetics research of free radical polymerization.
White columnar crystals or white crystalline powder. Insoluble in water, soluble in methanol, ethanol, acetone, ether, petroleum ether and aniline and other organic solvents.

This chemical is included in Fine Chemicals. See more about what is 2,2'-Azobis(2-methylpropionitrile) and 2,2'-Azobis(2-methylpropionitrile) SDS information.

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