Description

o-Trimethylsilyl-tert-Butyl Peroxide is a specialized organosilicon peroxide compound, serving as a highly effective free radical initiator and silylating agent. Its unique structure provides controlled reactivity, making it a valuable reagent for advanced organic synthesis and polymer chemistry. This product is essential for R&D chemists and process engineers in the pharmaceutical, agrochemical, and specialty polymer industries seeking precise radical initiation or silicon-based functionalization.

Application

• Free Radical Initiator: Used in the polymerization of monomers such as styrene, acrylates, and vinyl chloride to produce polymers with controlled molecular weights.
• Crosslinking Agent: Employed in the vulcanization and crosslinking of silicone rubbers and other elastomers to enhance thermal and mechanical properties.
• Organic Synthesis Reagent: Acts as a key intermediate in the synthesis of complex molecules, particularly in pharmaceutical research for introducing tert-butylperoxy or trimethylsilyl groups.
• Surface Modification: Utilized for the silylation of surfaces (e.g., silica, glass) to alter hydrophobicity and improve compatibility with organic matrices.
• Curing Agent for Resins: Facilitates the room-temperature or thermal curing of unsaturated polyester resins and other thermosetting plastics.
• Fuel & Lubricant Additive Precursor: Serves as a starting material for synthesizing performance additives that improve oxidation stability.

Basic Information

Product Name	o-Trimethylsilyl-tert-Butyl Peroxide
CAS No.	3965-63-7
Molecular Formula	C7H18O2Si
Molecular Weight	162.30 g/mol
Synonyms	tert-Butyl trimethylsilyl peroxide; Trimethylsilyl tert-butyl peroxide; (tert-Butylperoxy)trimethylsilane; TMS-tert-butyl peroxide; Silane, (1,1-dimethylethoxy)trimethyl-; 1,1-Dimethylethyl trimethylsilyl peroxide; tert-Butyloxytrimethylsilane
EINECS	223-559-6

Quality Control

Our o-Trimethylsilyl-tert-Butyl Peroxide is manufactured under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including assay by GC or HPLC and impurity profiling, to ensure it meets the high-purity standards required for sensitive synthetic applications. A Certificate of Analysis (COA) detailing purity, identity, and safety 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 place at temperatures between 2°C and 8°C (refrigerated) to maintain stability and minimize the risk of decomposition due to its nature as a peroxide and highly volatile compound. Keep away from heat, sparks, open flames, and incompatible materials such as strong reducing agents, acids, and bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Purity (HPLC)	≥ 96.0%
Water Content (KF)	≤ 0.5%
Density (at 20°C)	0.85 - 0.90 g/mL
Refractive Index (n20D)	1.390 - 1.410

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