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Vazo™ 88
Vazo™ 88 is an oil-soluble, azonitrile-free radical initiator used for initiating high-temperature bulk, solution, and suspension polymerizations.
Vazo™ 88 is a substituted azonitrile compound that decomposes when exposed to heat or light to form nitrogen gas and free radical intermediates. The free radical intermediates formed by the thermal decomposition of Vazo™ 88 are useful for initiating free radical polymerization of specialized polymers. Like other azonitrile initiators, Vazo™ 88 is unaffected by pH, does not undergo redox reactions, and does not decompose in the presence of free radicals. This makes Vazo™ 88 easier to use because fewer chemical reaction conditions need to be met to initiate polymerization effectively. Unlike organic peroxides, free radicals generated by Vazo™ 88 will not abstract hydrogen from growing polymer chains and can produce specialty polymers with minimal chain defects, branching, and cross-linking.
Vazo™ 88 has the highest thermal stability of the Vazo™ free radical initiators. It is most useful in polymerization reactions that require high temperatures to create polymers and chemical compounds used in a variety of industries, including transpiration, water treatment, construction, medicine, personal care, and more. It is also much safer than organic peroxide initiators and offers chemists more control over reaction conditions and final polymer structure. Vazo™ 88 may also be used as a chemical blowing agent for specialty foam applications. It has a 10-hour half-life at 88°C and should be stored away from light and ignition sources below 50°C to ensure product quality and safety.
Specifications
Molecular weight (g/mol): 244.33
Appearance: White crystalline solid
Purity (%, min): 98.0
Water (wt%, max): 0.5
Acetone insolubles (wt%, max): 0.15
Color, APHA (max): 25
Iron (ppm, max): 20
Primary Chemistry: 1,1'-azobis(cyanocyclohexane)
Features & Benefits
Excellent source of free radicals for polymerization initiation
High degree of solubility in organic solvents
Offers superior control over reaction conditions and final polymer structure
Safer than organic peroxide initiators
Useful in high-temperature reactions
Unaffected by pH
Will not react with dyes, pigments, or other redox reagents; requires fewer reaction conditions to maximize polymerization yield
Can be blended with other initiators
Problems Solved
Poor yield of polymerization reactions
Rapid decomposition of free radicals in high-temperature polymerizations
Health and safety concerns regarding organic peroxides
Branching, cross-linking, and chain defects brought forth by using other initiators that abstract hydrogen from growing polymer chains
Vazo™ Free Radical Initiators are a line of azonitrile compounds that are ideally suited for safely & efficiently initiating free radical polymerizations.
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Thank you
Thank you for your inquiry and interest in ChemPoint. We will respond to you shortly.
ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
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