What Is AIBN and How Is It Used in Chemistry?

AIBN? White crystalline solid, formula C₈H₁₂N₄. Azo group (–N=N–) gives it reactivity. Dissolves in organic solvents, not water. Heat breaks the azo bond, releases nitrogen gas, creates radicals. That's how it starts polymerization reactions.

CAS number 78-67-1. Melts 102–104°C. Density 1.11 g/cm³. Boiling point 236.2°C. Flash point 96.6°C.

Works by thermal decomposition. Radicals form, initiate chain reactions. Better than peroxides—no oxygen residues, maintains product clarity.

Uses? Polymer production for acrylics, PVC, specialty resins. Organic synthesis for radical additions, bromination. Foaming plastics, rubber manufacturing for lightweight materials.

Consistent performance across solvents. Predictable by-products (nitrogen gas). Labs, factories get reproducible results without discoloration.

Storage? Cool, dry place. Away from heat, flames. Decomposes when warm, can ignite. Wear gloves, goggles, protective clothing. Ventilation needed with powders.

Alternative V-601? Azo-based, no nitrile groups. Fewer toxic breakdown products. Choose when minimizing toxicity matters.

AIBN stays trusted for clean, predictable radical generation. Proper handling ensures effective polymerization, organic reactions.