Description

(Chlorophenyl)Diphenylsulphonium Hexafluorophosphate(1-) is a specialized onium salt, widely recognized as a highly efficient photoacid generator (PAG). This compound is critical for initiating cationic polymerization reactions upon exposure to ultraviolet (UV) light. It is primarily required by manufacturers in the electronics and advanced materials sectors for the production of photoresists, coatings, and other light-sensitive polymeric systems.

Application

• Photoresist Formulations: A key component in chemically amplified photoresists (CARs) for semiconductor manufacturing and microelectronics.
• UV-Curable Coatings & Inks: Serves as a photoinitiator for cationic curing of epoxy-based coatings, inks, and adhesives, offering excellent surface adhesion and low shrinkage.
• Advanced Polymer Synthesis: Used as a catalyst or initiator in the controlled cationic polymerization of various monomers under UV light.
• Optical Fiber Production: Employed in the UV-curing of protective coatings and primary layers on optical fibers.
• Lithographic Printing Plates: Acts as a photoactive compound in the production of high-resolution printing plates.
• 3D Printing (Stereolithography): Facilitates the rapid, precise curing of liquid resin into solid parts in vat photopolymerization processes.

Basic Information

Product Name	(Chlorophenyl)Diphenylsulphonium Hexafluorophosphate(1-)
CAS No.	68156-05-8
Molecular Formula	C18H14ClF6PS
Molecular Weight	442.78 g/mol
Synonyms	(4-Chlorophenyl)diphenylsulfonium Hexafluorophosphate; 4-Chlorophenyl-diphenyl-sulfonium Hexafluorophosphate; (p-Chlorophenyl)diphenylsulfonium Hexafluorophosphate; CDPS Hexafluorophosphate; Photoacid Generator PAG; Sulfonium Salt PAG; Diphenyl(4-chlorophenyl)sulfonium Hexafluorophosphate
EINECS	Contact for details

Quality Control

Our (Chlorophenyl)Diphenylsulphonium Hexafluorophosphate(1-) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for electronic and photochemical applications. Certificates of Analysis (COA) documenting lot-specific results are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and light-sensitive; prolonged exposure to air, moisture, or light should be avoided to maintain stability and performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (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.