Description

Ethyl 3,3-Bis(tert-Butylperoxy)Butyrate is a high-purity organic peroxide widely recognized for its efficiency as a free-radical initiator and cross-linking agent. Its controlled decomposition profile makes it a critical component for initiating polymerization reactions and modifying polymer properties. This product is essential for manufacturers in the polymer, rubber, and specialty chemical industries seeking reliable and consistent performance in their production processes.

Application

• Polymerization Initiator: Used as a free-radical initiator for the polymerization of ethylene, styrene, (meth)acrylates, and other vinyl monomers.
• Cross-Linking Agent: Employed in the cross-linking of polyethylene (PE), ethylene-propylene-diene monomer (EPDM) rubber, and silicone rubbers to enhance thermal and mechanical properties.
• Curing Agent for Unsaturated Polyester Resins: Facilitates the room-temperature or elevated-temperature curing of resins in the production of fiberglass-reinforced plastics (FRP) and composites.
• Modifier for Polymer Properties: Used to control molecular weight and branching in polyolefins, impacting melt flow and final product characteristics.
• Organic Synthesis: Serves as a source of tert-butoxy radicals in various organic synthesis and oxidation reactions.

Basic Information

Product Name	Ethyl 3,3-Bis(tert-Butylperoxy)Butyrate
CAS No.	55794-20-2
Molecular Formula	C14H28O6
Molecular Weight	292.37 g/mol
Synonyms	Ethyl 3,3-Di(tert-butylperoxy)butyrate; 3,3-Bis(tert-butylperoxy)butyric Acid Ethyl Ester; Ethyl 3,3-Bis(tert-butylperoxy)butanoate; Peroxide EBP; TBPEB; Luperox® 233; Trigonox® 23; Crosslinking Agent 233; 1,1-Di(tert-butylperoxy)-3,3-dimethyl butyl acetate (common misnomer)
EINECS	Contact for details

Quality Control

Our production of Ethyl 3,3-Bis(tert-Butylperoxy)Butyrate adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Each lot is analyzed for critical parameters including active oxygen content, purity, and key impurities. 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, well-ventilated area away from heat, sparks, and open flames. Due to its nature as a strong oxidizer and highly volatile compound, it must be segregated from reducing agents, acids, bases, and other incompatible materials. Recommended storage temperature is below 30°C (86°F).

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (Active Oxygen)	≥ 10.5 %
Purity (HPLC)	≥ 95.0 %
Density (at 20°C)	0.92 - 0.96 g/cm³
Refractive Index (n20D)	1.415 - 1.425

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