Description

Sulfonium, (4-Methylphenyl)Diphenyl-, Iodide (1:1) is a specialized organosulfur salt with a well-defined cationic structure, making it a valuable reagent and intermediate in advanced chemical synthesis. Its primary value lies in its role as a versatile precursor for photoacid generators (PAGs) and as a phase-transfer catalyst in demanding organic transformations. This high-purity compound is essential for manufacturers and R&D laboratories in the electronics, pharmaceutical, and specialty polymer industries seeking to develop next-generation materials and fine chemicals.

Application

• Photoacid Generator (PAG) Precursor: A critical component in the formulation of chemically amplified photoresists for semiconductor and microelectronics manufacturing.
• Phase-Transfer Catalyst (PTC): Facilitates reactions between reagents in immiscible phases, particularly useful in alkylation, esterification, and ether synthesis.
• Organic Synthesis Intermediate: Serves as a key building block for synthesizing complex sulfonium-based molecules and functional materials.
• Polymer Modification: Used to introduce cationic or photo-reactive sites into polymer chains for advanced coatings and adhesives.
• Research & Development: Employed in academic and industrial R&D for studying reaction mechanisms and developing new catalytic systems.
• Lithography & Imaging: Enables high-resolution patterning in advanced lithographic processes beyond semiconductor fabrication.

Basic Information

Item	Details
Product Name	Sulfonium, (4-Methylphenyl)Diphenyl-, Iodide (1:1)
CAS No.	3744-09-0
Molecular Formula	C19H17IS
Molecular Weight	428.31 g/mol
Synonyms	(4-Methylphenyl)diphenylsulfonium iodide; p-Tolyldiphenylsulfonium iodide; 4-Methylphenyldiphenylsulfonium iodide; Diphenyl(p-tolyl)sulfonium iodide; Sulfonium, p-tolyldiphenyl-, iodide; TPS-I; Photoacid generator precursor; Sulfonium salt
EINECS	Contact for details

Quality Control

Every batch of Sulfonium, (4-Methylphenyl)Diphenyl-, Iodide (1:1) is manufactured and tested under a strict quality management system to ensure consistency and reliability for industrial and research applications. We guarantee high chemical purity and provide comprehensive analytical data with each shipment. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is available upon request and can be tailored to meet specific customer or regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This material is light-sensitive and should be handled and stored away from direct light exposure to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Heavy Metals	< 10 ppm
Loss on Drying	< 0.5%
Residue on Ignition	< 0.1%

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