Description

Iodonium, [1,1'-biphenyl]-4-yl(2,4,6-trimethylphenyl)-, 1,1,1-trifluoromethanesulfonate (1:1) is a specialized iodonium salt photoinitiator, a critical component in advanced photopolymerization systems. Its value lies in its ability to generate highly reactive cationic species upon exposure to UV light, enabling the curing of coatings, inks, and adhesives that are resistant to oxygen inhibition. This compound is essential for R&D scientists and production engineers in the photoresist, electronics, and high-performance polymer industries seeking efficient and reliable cationic photoinitiators. The product is supplied with a CAS number of 1276111-26-2.

Application

• Cationic UV-Curing Systems: A key photoinitiator for the polymerization of epoxy and vinyl ether resins in coatings, inks, and adhesives.
• Photoresists & Microelectronics: Used in the formulation of advanced photoresists for semiconductor manufacturing and printed circuit board (PCB) fabrication.
• Optical Fiber Coatings: Enables the rapid, low-temperature curing of protective coatings on optical fibers.
• 3D Printing (Stereolithography): Facilitates high-resolution, rapid prototyping and additive manufacturing via light-induced curing.
• Dental Composites: Employed in light-curable dental restorative materials and sealants.
• Advanced Composite Materials: Initiates curing in fiber-reinforced polymers for aerospace and automotive applications.

Basic Information

Product Name	Iodonium, [1,1'-biphenyl]-4-yl(2,4,6-trimethylphenyl)-, 1,1,1-trifluoromethanesulfonate (1:1)
CAS No.	1276111-26-2
Molecular Formula	C22H20F3IO3S
Molecular Weight	548.36 g/mol
Synonyms	(4-Biphenylyl)(2,4,6-trimethylphenyl)iodonium Trifluoromethanesulfonate; (4-Biphenylyl)(mesityl)iodonium Triflate; Biphenyl Iodonium Salt; Photoinitiator; UV Curing Agent; Iodonium, (1,1'-biphenyl-4-yl)(2,4,6-trimethylphenyl)-, trifluoromethanesulfonate; [1,1'-Biphenyl]-4-yl(2,4,6-trimethylphenyl)iodonium Trifluoromethanesulfonate
EINECS	Contact for details

Quality Control

Our iodonium salt photoinitiator is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high performance. Each lot is analyzed to confirm identity, purity, and photoactivity. A comprehensive Certificate of Analysis (COA) detailing specifications such as assay (by HPLC), residual solvent content, and UV absorption characteristics is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 15-25°C. This material is hygroscopic (moisture-sensitive) and light-sensitive; therefore, containers must be kept tightly sealed in a desiccated environment and handled under yellow light or in the dark when possible to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 10 ppm
UV Absorption	Characteristic profile provided on COA

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