Description

tert-Butyl 2-methylperbenzoate is a high-purity organic peroxide widely recognized for its role as a free-radical initiator in polymerization reactions. Its controlled decomposition kinetics make it a critical component for achieving specific polymer properties and reaction efficiencies. This compound is essential for manufacturers in the polymer, resin, and specialty chemical industries seeking reliable and consistent initiator performance.

Application

• Polymerization Initiator: Primarily used as a free-radical initiator for the production of polystyrene, polyethylene, and other vinyl polymers.
• Cross-linking Agent: Employed in the curing and cross-linking of unsaturated polyester resins and acrylic systems.
• Synthesis Intermediate: Serves as a key reagent in organic synthesis for introducing peroxy functional groups.
• Resin Manufacturing: Utilized in the production of high-performance composite materials and fiber-reinforced plastics.
• Adhesive & Coating Formulations: Acts as a curing agent in specific adhesive and coating applications requiring controlled radical initiation.

Basic Information

Product Name	tert-Butyl 2-Methylperbenzoate
CAS No.	22313-62-8
Molecular Formula	C12H16O3
Molecular Weight	208.25 g/mol
Synonyms	2-Methylbenzoic acid 1,1-dimethylethyl ester; TB2MPB; tert-Butyl peroxy-2-methylbenzoate; Perbenzoic acid, 2-methyl-, 1,1-dimethylethyl ester; Peroxide, tert-butyl 2-methylperbenzoate; Luperox® 331M80 (trade name); Trigonox® C (trade name)
EINECS	244-901-5

Quality Control

Our tert-Butyl 2-methylperbenzoate is manufactured under stringent quality management systems to ensure batch-to-batch consistency and reliability. Each lot undergoes comprehensive analytical testing, including assay by HPLC and active oxygen content determination, to meet exacting industry specifications. A Certificate of Analysis (COA) detailing purity, identity, and key parameters is provided with every shipment 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. Keep away from reducing agents, strong acids, bases, and combustible materials. Recommended storage temperature is 15-25°C. This product is a strong oxidizer and light-sensitive; handle and store with appropriate precautions.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Active Oxygen Content	≥ 7.68 %
Density (at 20°C)	1.04 - 1.06 g/cm³
Refractive Index (n20D)	1.500 - 1.510

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