Description

(4-tert-Butylphenyl)Diphenylsulfonium Triflate is a high-purity photoacid generator (PAG) and cationic photoinitiator. This compound matters for its exceptional efficiency in generating strong acids upon exposure to UV light, which is critical for initiating polymerization and cross-linking reactions. It is primarily needed by manufacturers in the electronics industry for advanced photoresist formulations, as well as by producers of specialty coatings, inks, and adhesives requiring precise, energy-efficient curing.

Application

• Photoresists for Semiconductor Manufacturing: A key component in chemically amplified resists (CAR) for deep-UV (DUV) and extreme-UV (EUV) lithography processes.
• UV-Curable Coatings & Inks: Serves as an efficient cationic photoinitiator for epoxy-based systems, providing excellent surface cure and adhesion.
• Advanced Packaging & 3D ICs: Used in the formulation of permanent and temporary bonding adhesives and dielectric materials.
• Optical Fiber Coatings: Enables the rapid, low-temperature curing of protective primary and secondary coatings.
• Printing Plates & Flexography: Facilitates the production of high-resolution, durable printing plates through UV-induced cross-linking.
• Stereolithography (SLA) 3D Printing: Acts as a photoinitiator in resins for creating high-detail, functional prototypes and parts.

Basic Information

Product Name	(4-tert-Butylphenyl)Diphenylsulfonium Triflate
CAS No.	145612-66-4
Molecular Formula	C23H23F3O3S2
Molecular Weight	492.55 g/mol
Synonyms	(4-tert-Butylphenyl)diphenylsulfonium Trifluoromethanesulfonate; Diphenyl(4-tert-butylphenyl)sulfonium Triflate; Sulfonium, (4-(1,1-dimethylethyl)phenyl)diphenyl-, trifluoromethanesulfonate (1:1); (p-tert-Butylphenyl)diphenylsulfonium Triflate; Photoacid Generator PAG; CGI 725; S-Phenyl-S,S-diphenylsulfonium Triflate derivative; 4-tert-Butylphenyldiphenylsulfonium Trifluoromethanesulfonate
EINECS	Contact for details

Quality Control

Our (4-tert-Butylphenyl)Diphenylsulfonium Triflate is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and NMR for structural confirmation, to ensure consistent performance and high-grade quality suitable for sensitive electronic applications. Comprehensive Certificates of Analysis (COA) with lot-specific data are provided to guarantee traceability and compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation and maintain efficacy.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 99.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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