Vazo™ 64 is an oil-soluble AIBN (azobisisobutyronitrile) free radical initiator designed for medium-temperature polymerization reactions. Its ability to reduce polymer polydispersity and simplify reaction conditions makes it preferred for producing high-performance polymers and specialty materials in a range of industries.
Vazo™ 64 is an AIBN (azobisisobutyronitrile) initiator that decomposes when exposed to heat or light to form nitrogen gas and free radical intermediates. Its most common use is as a radical initiator in free radical polymerization reactions to produce polymers with low branching, cross-linking, and polydispersity. Vazo™ 64 is not sensitive to pH, will not undergo redox reactions, and can be mixed with several other initiators without undergoing radical-induced decomposition.
In addition, Vazo™ 64 generates free radicals that do not abstract hydrogen from growing polymer chains, giving chemists more control over the polymerization reaction and the polymer’s final structure and molecular weight. Vazo™ 64 is generally safer than compounds like organic peroxide initiators and can produce polymer structures with higher fidelity.
Like other Vazo™ grades, the number in the grade name indicates the 10-hour half-life temperature. Therefore, Vazo™ 64 has a 10-hour half-life in solution at 64°C and is recommended for polymerizations that occur at 45°C–90°C. However, it is possible to use it outside of this range. Vazo™ 64 should be transported and stored away from light, flames, and ignition sources at a maximum of 24°C to ensure product quality and safety.
Molecular weight, g/mol: 162.21
Appearance: White noodles
Purity, % min: 98.0
Water, max wt%: 0.5
Acetone insolubles, max wt%: 0.1
APHA color, max: 15
Iron, max ppm: 20
CAS number: 78-67-1
Primary Chemistry: Azobisisobutyronitrile (AIBN)
Primary Chemistry: Azobisisobutyronitrile (AIBN)
Free radical source
Decomposition is not pH sensitive
Allows for higher control of polymerization and polymer structure
Safer than other common radical initiators, such as organic peroxides
Will not undergo redox reactions
Can be mixed with other radical initiators without undergoing radical-induced decomposition
High polydispersity of polymerization reaction products
Generation of color-forming impurities during polymerization
Polymer-chain defects
Branching or cross-linking during polymerization
Health and safety hazards associated with using organic peroxide initiators
Acrylic polymer production: Used for polymerizing acrylate monomers to create resins and coatings with high durability, clarity, and weather resistance for automotive, industrial, and architectural applications
Vinyl polymer manufacturing: Initiates the polymerization of vinyl chloride and other monomers to produce PVC for the construction, healthcare, and packaging industries
Elastomers and rubbers: Enables the production of high-quality synthetic elastomers for tires, seals, and gaskets
Adhesives and sealants: Contributes to developing high-quality resins used in adhesives and structural sealants for maximum bonding properties and chemical resistance
Coatings: Facilitates the production of resins used in coatings for metals, wood, and plastics
Specialty resins: Used in creating high-performance resins that offer excellent heat resistance and mechanical strength for aerospace, automotive, and industrial applications
Electronic materials: Supports the synthesis of polymers for electronic components, such as circuit boards, insulating materials, and conductive coatings
Medical polymers: Enables the production of biocompatible polymers for medical devices, surgical tools, optical applications, and drug delivery systems
Water treatment polymers: Aids in synthesizing flocculants and coagulants for efficient water purification processes
Textile finishes: Used in polymer formulations that enhance fabric durability, wrinkle resistance, and water repellency
Oilfield chemicals: Contributes to developing polymers used in enhanced oil recovery, drilling fluids, and cementing operations
Agriculture: Assists in producing controlled-release fertilizers and pesticides, ensuring efficient nutrient and chemical delivery
Paper coatings: Enables the creation of polymer-based coatings that enhance paper strength, gloss, and printability
Food packaging films: Used in synthesizing food-safe polymers for flexible packaging with barrier protection and extended shelf life
Automotive polymers: Supports the development of lightweight, high-strength polymers for automotive components, improving fuel efficiency and durability
Cosmetic and personal care polymers: Used in formulating polymers for thickening, film formation, and water resistance in skin care and cosmetic products
Foam production: Aids the creation of rigid and flexible foams for insulation, cushioning, and packaging applications
Vazo™ is a line of azo initiators ideally suited for safely and efficiently initiating free radical polymerizations.
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