Description

tert-Butyl Peroxy Butenoate (In Solution, Content ≤77%) is a specialized organic peroxide initiator used in high-temperature polymerization processes. This compound is valued for its ability to efficiently generate free radicals, enabling precise control over polymer chain formation and molecular weight. It is a critical raw material for manufacturers in the polymer and resin industries, particularly for producing high-performance plastics, elastomers, and coatings that require specific thermal and mechanical properties.

Application

• Polymerization Initiator: Primary use as a free-radical initiator for the high-temperature polymerization of ethylene, styrene, and (meth)acrylates.
• Crosslinking Agent: Used in the curing and crosslinking of unsaturated polyester resins (UPR) for fiberglass-reinforced plastics (FRP) and sheet molding compounds (SMC).
• Synthetic Rubber Production: Employed in the manufacture of styrene-butadiene rubber (SBR), ethylene-propylene-diene monomer (EPDM) rubber, and other specialty elastomers.
• High-Performance Coatings & Adhesives: Facilitates the synthesis of acrylic and vinyl ester resins used in industrial coatings, adhesives, and sealants.
• Polymer Modification: Used in grafting reactions and for modifying polymer properties such as impact resistance and thermal stability.
• Composite Materials: Key component in the production of thermoset composites for automotive, marine, and construction applications.

Basic Information

Product Name	tert-Butyl Peroxy Butenoate (In Solution, Content ≤77%)
CAS No.	23474-91-1
Molecular Formula	C8H14O3
Molecular Weight	158.20 g/mol
Synonyms	tert-Butyl peroxybutenoate; 2-Butenoic acid, 1,1-dimethylethyl ester; TBPEH; tert-Butyl peroxy-2-butenoate; Perbutyl O; Peroxide, tert-butyl 2-butenoate; Luperox TBEC; Trigonox 17/40
EINECS	Contact for details

Quality Control

Our tert-Butyl Peroxy Butenoate is manufactured under stringent process controls to ensure batch-to-batch consistency and reliability. Quality is verified through comprehensive analytical testing, including assay by iodometric titration and gas chromatography (GC) to confirm purity and active oxygen content. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to support your quality management systems.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat, sparks, and open flames. Keep away from incompatible materials such as strong acids, bases, reducing agents, and other organic compounds. The recommended storage temperature is below 30°C (86°F). Always refer to the Safety Data Sheet (SDS) for complete handling and storage instructions.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Assay (tert-Butyl Peroxy Butenoate)	≤77% (in solution)
Active Oxygen	Contact for details
Identification (IR)	Conforms
Density (at 20°C)	~0.92 g/mL
Solvent (Typical)	Odorless Mineral Spirits

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