Description

Cumyl Peroxypivalate (in solution, content ≤77%) is a high-purity organic peroxide initiator supplied as a stabilized solution. This compound is critical for initiating free-radical polymerization reactions, offering excellent control over molecular weight and polymer structure. It is primarily required by manufacturers in the polymer industry for the production of specialty plastics, resins, and elastomers, where precise initiation kinetics are essential.

Application

• Primary Initiator for Polymerization: Used in the production of polyvinyl chloride (PVC), low-density polyethylene (LDPE), and polystyrene (PS).
• Cross-linking Agent: Facilitates the cross-linking of unsaturated polyester resins for fiberglass-reinforced plastics and composites.
• Synthesis of Acrylic Polymers: Essential for the controlled polymerization of methyl methacrylate (MMA) and other acrylic monomers.
• Manufacture of Elastomers: Employed in the synthesis of synthetic rubbers like ethylene-propylene-diene monomer (EPDM) rubber.
• Curing Agent for Resins: Acts as a curing initiator for thermosetting resins used in coatings, adhesives, and potting compounds.
• Modifier for Polymer Properties: Used to tailor the molecular weight distribution and branching of polymers for specific performance characteristics.

Basic Information

Product Name	Cumyl Peroxypivalate (in solution, content ≤77%)
CAS No.	23383-59-7
Molecular Formula	C14H20O3
Molecular Weight	236.31 g/mol
Synonyms	Cumyl Peroxy Pivalate; Cumyl Peroxypivalate; α-Cumyl Peroxy Pivalate; Cumyl Peroxyneodecanoate (related); Peroxy Pivalic Acid Cumyl Ester; tert-Butyl Peroxy Pivalate Cumyl Derivative; CPP; Initiator CPP; Peroxide Initiator CPP
EINECS	Contact for details

Quality Control

Our Cumyl Peroxypivalate solution is manufactured under stringent quality management systems. Every batch undergoes rigorous analytical testing, including assay by HPLC and impurity profiling, to ensure it meets precise specifications for active oxygen content and solution stability. Certificates of Analysis (COA) documenting purity, solvent content, and key physical properties are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat, sparks, and open flames. Recommended storage temperature is between 15°C and 25°C (59°F and 77°F). Keep away from incompatible materials such as strong acids, reducing agents, and heavy metal compounds. The solution is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Assay (Cumyl Peroxypivalate)	≤77% (in solution)
Active Oxygen Content	Contact for details
Solvent (Typical)	Odorless Mineral Spirits / Iso-dodecane
Identification (IR)	Conforms
Water Content	<0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.