Description

Sulfonium, Tris(4-Methylphenyl)-, Bromide is a specialized organosulfur salt with a well-defined cationic structure. This compound is valued for its role as a key intermediate and catalyst in advanced organic synthesis and materials science. It is primarily sought by R&D chemists and process engineers in the pharmaceutical, agrochemical, and specialty polymer industries for developing novel compounds and functional materials.

Application

• Phase-Transfer Catalyst (PTC): Facilitates reactions between reagents in immiscible phases, particularly in alkylation and polymerization processes.
• Photoacid Generator (PAG): A critical component in photoresist formulations for semiconductor manufacturing and advanced lithography.
• Organic Synthesis Intermediate: Used in the preparation of more complex sulfonium-based compounds and functional organic molecules.
• Curing Agent for Epoxy Resins: Acts as a thermal or photo-activated catalyst for cross-linking epoxy systems in high-performance coatings and composites.
• Research & Development: Serves as a building block in academic and industrial research for exploring new reaction methodologies and material properties.

Basic Information

Product Name	Sulfonium, Tris(4-Methylphenyl)-, Bromide
CAS No.	3744-11-4
Molecular Formula	C21H21BrS
Molecular Weight	385.36 g/mol
Synonyms	Tris(4-methylphenyl)sulfonium bromide; Tri-p-tolylsulfonium bromide; (4-Methylphenyl)diphenylsulfonium bromide (common isomer reference); TPS-Br; Photoacid Generator TPS; Sulfonium, trip-tolyl-, bromide; Tris(p-tolyl)sulfonium bromide
EINECS	Contact for details

Quality Control

Our Sulfonium, Tris(4-Methylphenyl)-, Bromide is manufactured under controlled conditions to ensure batch-to-batch consistency and high purity. Quality is verified through a suite of analytical techniques including HPLC, NMR, and elemental analysis. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed and away from direct light sources to maintain stability and purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals	≤ 20 ppm

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