Azobisisobutyronitrile CAS 78-67-1 AIBN

Aure Chemical Supplies Premium Azobisisobutyronitrile CAS 78-67-1 for Global Industries

Azobisisobutyronitrile (AIBN) is a widely used azo compound that thermally decomposes to generate carbon-centered free radicals and nitrogen gas. It serves as an efficient initiator for radical polymerizations and as a blowing agent in plastics and rubber. Aure Chemical supplies this material for polymer production and specialty chemical applications requiring consistent performance.

Basic Information

CAS No.	78-67-1
EC No.	201-132-3
Linear Formula	(CH3)2C(CN)N=NC(CH3)2CN
Molecular Weight	164.21
Appearance	White crystalline powder
Melting Point	102-104 °C (dec.) (lit.)
Boiling point	Decomposes (lit.)
Density	1.1 g/cm3 (lit.)
RIDADR	UN 3234 Class 4.1 (Self-reactive solid Type C, temperature controlled)
Chemical Structure

Key Applications

• Free-radical polymerization initiator – Primary industrial use to initiate polymerization of vinyl monomers such as styrene, acrylates, methacrylates, vinyl chloride and acrylonitrile in bulk, solution, suspension and emulsion processes.

• Blowing agent for plastics and rubber – Generates nitrogen gas upon decomposition to produce foamed plastics, elastomers and cellular materials.

• Initiator in organic radical reactions – Employed in laboratory and industrial organic synthesis for controlled radical processes including halogenation and grafting reactions.

• Production of acrylics, adhesives and fibers – Preferred over many peroxides for acrylic sheet casting, adhesives, acrylic fibers and specialty polymers due to low discoloration and selective radical generation.

• Specialty polymer and research applications – Used in the synthesis of polyacrylamides, superabsorbents, flocculants and other functional polymers requiring clean initiation.

Aure Chemical: Your Reliable Partner for Azobisisobutyronitrile

• Controlled purity and consistency – Material produced and tested to meet demanding industrial specifications for reliable initiation performance.

• Temperature-controlled logistics – Specialized handling and cold-chain capable shipping support safe international delivery of temperature-sensitive product.

• Comprehensive safety documentation – Full SDS, COA and dangerous-goods classification documents are provided to facilitate compliant transport and use.

• Technical guidance and flexible supply – Support for packaging selection, storage recommendations and bulk supply arrangements is available to match process needs.

Hazards Classification

GHS Classification: Self-reactive substances and mixtures (Type C) – GHS02; Acute toxicity, oral (Category 4) – GHS07; Acute toxicity, inhalation (Category 4) – GHS07; Hazardous to the aquatic environment, chronic (Category 3) – GHS09

Hazard Statements: H242 Heating may cause a fire; H302 + H332 Harmful if swallowed or if inhaled; H412 Harmful to aquatic life with long lasting effects

UN Number: UN 3234

Hazard Class: 4.1

Packing Group: Not applicable (temperature controlled self-reactive solid)