Description

tert-Butyl peroxybenzoate is a high-purity organic peroxide widely used as a polymerization initiator and crosslinking agent. Its controlled decomposition properties make it essential for initiating free-radical reactions at moderate temperatures. This compound is a critical raw material for manufacturers in the polymer, resin, and specialty chemical industries seeking reliable and efficient process initiation.

Application

• Polymerization Initiator: Primarily used for the bulk, solution, and suspension polymerization of styrene, acrylates, methacrylates, and vinyl acetate.
• Crosslinking Agent: Employed in the curing and crosslinking of unsaturated polyester resins (UPR) for fiberglass-reinforced plastics (FRP), gel coats, and sheet molding compounds (SMC).
• Synthetic Intermediate: Serves as a key reagent in organic synthesis for introducing the tert-butoxycarbonyl (Boc) group and in other peroxy-mediated transformations.
• Rubber Vulcanization: Used as a co-agent or initiator in the vulcanization processes for certain synthetic elastomers.
• Adhesive & Coating Formulations: Incorporated into formulations for radiation-curable adhesives, paints, and coatings that require thermal curing initiation.

Basic Information

Product Name	tert-Butyl Peroxybenzoate
CAS No.	614-45-9
Molecular Formula	C11H14O3
Molecular Weight	194.23 g/mol
Synonyms	tert-Butyl perbenzoate; TBPE; TBPB; Perbenzoic acid, tert-butyl ester; Benzenecarboperoxoic acid, 1,1-dimethylethyl ester; Luperox P; Trigonox C; USP-245; CAS 614-45-9; 1,1-Dimethylethyl peroxybenzoate
EINECS	210-382-3

Quality Control

Our tert-butyl peroxybenzoate is manufactured under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including assay, purity, and impurity profiling, to ensure it meets precise customer and industry specifications. A Certificate of Analysis (COA) documenting key parameters is provided with every shipment to guarantee traceability and compliance.

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 peroxides. Recommended storage temperature is below 30°C (86°F).

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Active Oxygen Content	≥ 8.0 %
Density (at 20°C)	1.035 - 1.045 g/cm³
Refractive Index (n20D)	1.495 - 1.505

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