Description

Sulfonium 044W CAS NO 25328-78-3 is a specialized sulfonium salt compound, recognized for its role as a high-performance photoacid generator (PAG). This material is critical for enabling precise chemical transformations in advanced manufacturing processes where controlled acid release is required. It is primarily utilized by manufacturers in the electronics and specialty polymer industries for applications such as photoresist formulations and cationic polymerization.

Application

• Photoresist Formulations: A key component in chemically amplified resists (CARs) for semiconductor and microelectronics fabrication.
• UV-Curable Coatings & Inks: Serves as a photoinitiator to catalyze cross-linking reactions, enhancing cure speed and film properties.
• Cationic Polymerization: Initiates the ring-opening polymerization of epoxides and other monomers for high-performance adhesives and composites.
• Advanced Lithography: Used in deep-UV (DUV) and extreme-UV (EUV) lithography processes for next-generation chip design.
• Fiber Optics: Applied in the production of specialty coatings and cladding materials for optical fibers.
• Printing Plate Production: Facilitates image formation in photopolymer plates for high-resolution printing.

Basic Information

Product Name	Sulfonium 044W
CAS No.	25328-78-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Triphenylsulfonium Salt; Photoacid Generator 044W; Sulfonium PAG; Triarylsulfonium Salt; (4-Methylphenyl)diphenylsulfonium derivative; UV Photointiator; Onium Salt; Lithographic Photoinitiator
EINECS	Contact for details

Quality Control

Our Sulfonium 044W is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods, to ensure consistency and performance. Certificates of Analysis (COA) documenting batch-specific results are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept sealed to exclude moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Heavy Metals	≤ 20 ppm

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