Description

Bis(o-Tolyl) Peroxide is an organic peroxide compound widely utilized as a polymerization initiator and cross-linking agent. Its controlled decomposition properties are critical for initiating free-radical reactions in polymer synthesis and resin curing processes. This chemical is essential for manufacturers in the polymer, plastics, and specialty chemical industries seeking reliable and efficient initiators for high-performance materials.

Application

• Polymerization Initiator: Primarily used for the free-radical polymerization of monomers such as styrene, vinyl chloride, and acrylates to produce various plastics and resins.
• Cross-linking Agent: Employed in the curing and cross-linking of unsaturated polyester resins and silicone rubbers to enhance thermal and mechanical properties.
• Synthesis Intermediate: Serves as a key intermediate in organic synthesis for introducing peroxide functional groups.
• Curing Agent for Composites: Used in the production of fiber-reinforced plastic (FRP) composites and laminates.
• Adhesive & Coating Formulations: Incorporated into formulations for adhesives, sealants, and coatings that require peroxide-initiated curing.
• Modifier for Polymer Properties: Applied to modify molecular weight and branching in polymers to achieve specific performance characteristics.

Basic Information

Product Name	Bis(o-Tolyl) Peroxide
CAS No.	35112-60-8
Molecular Formula	C14H14O2
Molecular Weight	214.26 g/mol
Synonyms	Di(o-tolyl) peroxide; Di-ortho-tolyl peroxide; o,o'-Ditolyl peroxide; Bis(2-methylphenyl) peroxide; 2,2'-Dimethyldiphenyl peroxide; DTBPO; Peroxide, bis(2-methylphenyl); (2-Methylphenyl) peroxide
EINECS	Contact for details

Quality Control

Our Bis(o-Tolyl) Peroxide is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including assay and impurity profiling, to ensure it meets precise specifications for use as a high-purity initiator. A Certificate of Analysis (COA) documenting purity, identity, and key physical parameters is provided with every shipment to guarantee batch-to-batch consistency and reliability for your critical processes.

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. Due to its nature as a strong oxidizer and being easily oxidized, it is recommended to store under an inert atmosphere (e.g., nitrogen) and separate from reducing agents, acids, and organic materials. Recommended storage temperature is 2-8°C (36-46°F) for extended stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Melting Point	Contact for details
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.