Description

(4-Iodophenyl)Diphenylsulfonium Triflate is a specialized photoacid generator (PAG) and a key cationic photoinitiator. This compound matters for its high efficiency in generating strong acids upon exposure to UV light, which is critical for initiating cationic polymerization reactions. It is primarily needed by manufacturers in the electronics industry for advanced photoresist formulations, as well as by R&D chemists developing UV-curable coatings, inks, and adhesives.

Application

• Photoresists for Microelectronics: A critical component in chemically amplified photoresists (CARs) for semiconductor manufacturing and micro-lithography.
• UV-Curable Coatings & Inks: Serves as an efficient photoinitiator for cationic curing of epoxy-based coatings, inks, and varnishes, offering excellent adhesion and chemical resistance.
• Advanced Adhesives: Used in the formulation of high-performance, light-curable adhesives for optical and electronic assemblies.
• Fiber Optics: Employed in the production of UV-curable coatings and matrix materials for optical fibers.
• 3D Printing (SLA/DLP): Acts as a photoinitiator in stereolithography (SLA) and digital light processing (DLP) resins for high-resolution additive manufacturing.
• Polymer & Materials Research: A valuable reagent for academic and industrial R&D focused on novel cationic polymerization mechanisms and functional polymer synthesis.

Basic Information

Product Name	(4-Iodophenyl)Diphenylsulfonium Triflate
CAS No.	255056-46-3
Molecular Formula	C19H14F3IO3S2
Molecular Weight	554.33 g/mol
Synonyms	(4-Iodophenyl)diphenylsulfonium Trifluoromethanesulfonate; Diphenyl(4-iodophenyl)sulfonium Triflate; (p-Iodophenyl)diphenylsulfonium Triflate; Photoacid Generator PAG; Sulfonium Salt Photoinitiator; CID 16219338; (4-Iodophenyl)diphenylsulfonium Trifluoromethanesulfonate
EINECS	Contact for details

Quality Control

Every batch of (4-Iodophenyl)Diphenylsulfonium Triflate is produced and tested under strict quality management protocols to ensure high purity and consistent performance. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and light-sensitive; ensure containers are sealed under inert atmosphere (e.g., nitrogen or argon) after opening to maintain stability and prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Heavy Metals	≤ 10 ppm

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