Description

Diphenyliodonium p-Toluenesulfonate is a highly effective photoacid generator (PAG) and versatile aryl iodonium salt. This compound matters for its crucial role in initiating cationic polymerization upon exposure to UV light or heat, enabling precise control in advanced manufacturing processes. Industries requiring high-performance photoresists, UV-curable coatings, and specialty adhesives need this reliable initiator to achieve superior material properties and production efficiency.

Application

• Photoacid Generator (PAG) for Advanced Photoresists: Critical component in chemically amplified resists (CAR) for semiconductor and microelectronics fabrication.
• UV-Curable Coatings and Inks: Serves as a cationic photoinitiator for coatings on plastics, metals, and paper, offering excellent adhesion and chemical resistance.
• Cationic Polymerization Initiator: Used to polymerize epoxides, vinyl ethers, and other monomers in adhesives, sealants, and composite materials.
• Fiber Optic Coatings: Enables the production of durable, protective cladding for optical fibers through fast, controlled curing.
• 3D Printing (Stereolithography): Facilitates rapid, high-resolution curing of liquid resins in additive manufacturing.
• Dental Composites and Restoratives: Used in light-curable dental materials for precise, durable fillings and sealants.
• Analytical Chemistry Reagent: Employed as a catalyst or reagent in organic synthesis and research laboratories.

Basic Information

Product Name	Diphenyliodonium p-Toluenesulfonate
CAS No.	6293-66-9
Molecular Formula	C19H17IO3S
Molecular Weight	476.31 g/mol
Synonyms	Diphenyliodonium Tosylate; Diphenyliodonium 4-Methylbenzenesulfonate; Iodonium, diphenyl-, 4-methylbenzenesulfonate; DPI-Ts; Diphenyliodonium p-Toluenesulphonate; (Diphenyl-λ³-iodanyl) 4-methylbenzenesulfonate; Photoacid Generator PAG
EINECS	Contact for details

Quality Control

Our Diphenyliodonium p-Toluenesulfonate 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 photochemical and electronic applications. A Certificate of Analysis (COA) detailing specific results for purity, moisture content, and heavy metals is provided with every shipment.

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; containers must be kept tightly sealed after opening to minimize exposure to atmospheric moisture and light to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	155 - 165 °C
Loss on Drying	≤ 1.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Soluble in polar organic solvents (e.g., acetonitrile, DMF)

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