Description

Diundecanoyl Peroxide is a high-purity organic peroxide widely recognized for its role as a polymerization initiator and cross-linking agent. Its controlled decomposition properties are critical for initiating free-radical reactions in polymer synthesis, ensuring consistent molecular weight and polymer structure. This compound is essential for manufacturers in the plastics, rubber, and specialty chemical industries seeking reliable and efficient initiators for high-quality polymer production.

Application

• Primary initiator for the polymerization of vinyl chloride (PVC) and other vinyl monomers.
• Key component in the cross-linking of unsaturated polyester resins for fiberglass-reinforced plastics (FRP).
• Used in the curing of silicone rubbers and other elastomers to achieve desired mechanical properties.
• Employed as a free-radical source in organic synthesis for creating specialized chemical intermediates.
• Facilitates the production of expandable polystyrene (EPS) and other foam materials.
• Applied in the manufacture of acrylic sheets and castings.

Basic Information

Product Name	Diundecanoyl Peroxide
CAS No.	7483-71-8
Molecular Formula	C22H42O4
Molecular Weight	370.57 g/mol
Synonyms	Diundecyl Peroxide; Di-n-undecanoyl Peroxide; Lauroyl Peroxide (Note: Common name for C12, but often used in broader context); Undecanoyl Peroxide; Peroxide, bis(1-oxoundecyl); Bis(undecanoyl) peroxide; Initiator DUP; DUP-75 (common trade name for formulations)
EINECS	231-318-9

Quality Control

Our Diundecanoyl Peroxide is manufactured under strict quality management systems to ensure batch-to-batch consistency and reliability. Each lot is analyzed for critical parameters including active oxygen content, purity, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat, sparks, and open flames. Maintain storage temperature as recommended on the specific product label or Safety Data Sheet (typically at or below 30°C/86°F). Isolate from reducing agents, strong bases, and combustible materials.

Specification

Item	Specification
Appearance	White to off-white powder or paste
Identification (IR)	Conforms
Assay (Active Oxygen)	≥ 4.0 %
Purity (HPLC)	≥ 98.0 %
Acidity (as Undecanoic Acid)	≤ 1.0 %
Loss on Drying	≤ 0.5 %
Residue on Ignition	≤ 0.1 %

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