Description

Tri-p-Tolylsulfonium Chloride is a specialized organosulfur salt widely utilized as a high-performance photoacid generator (PAG). This compound is valued for its efficiency in initiating cationic polymerization upon exposure to specific light sources. It is a critical component for advanced material synthesis in the electronics and polymer industries, enabling the production of high-resolution coatings, photoresists, and specialty adhesives.

Application

• Photoresist Formulations: A key photoacid generator (PAG) in chemically amplified photoresists for semiconductor and microelectronics manufacturing.
• UV-Curable Coatings & Inks: Initiates rapid cationic polymerization for durable, scratch-resistant industrial and graphic arts coatings.
• Fiber Optics & Optical Components: Used in the production of cladding materials and protective coatings due to precise curing properties.
• Specialty Adhesives & Sealants: Enables fast, low-temperature curing for high-performance bonding applications.
• Polymer Chemistry Research: Serves as a catalyst or initiator in the synthesis of novel polymers and advanced materials.
• Lithographic Printing Plates: Facilitates the image-forming process in advanced plate-making technologies.

Basic Information

Product Name	Tri-p-Tolylsulfonium Chloride
CAS No.	47197-43-3
Molecular Formula	C21H21ClS
Molecular Weight	340.91 g/mol
Synonyms	Tris(4-methylphenyl)sulfonium Chloride; Tri(4-tolyl)sulfonium Chloride; p-Tolylsulfonium Chloride; Photoacid Generator 47197-43-3; Sulfonium, tris(4-methylphenyl)-, chloride; Tris(p-tolyl)sulfonium Chloride
EINECS	Contact for details

Quality Control

Our Tri-p-Tolylsulfonium Chloride is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the stringent requirements for photoacid generator applications. Certificates of Analysis (COA) documenting all critical parameters are available upon request.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation. Keep away from incompatible materials.

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
Chloride Content	Conforms

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