Description

Bis(4-tert-Butylphenyl)Iodonium p-Toluenesulfonate is a high-purity diaryliodonium salt, a critical class of photoacid generators (PAGs) and cationic initiators. This compound matters for its exceptional efficiency in generating strong acids upon exposure to UV light or heat, enabling precise polymerization control. It is essential for manufacturers in the electronics, advanced coatings, and specialty polymer industries seeking reliable, high-performance photoinitiators for cutting-edge applications.

Application

• Photoacid Generator (PAG) for Advanced Photoresists: A key component in chemically amplified resists (CARs) for semiconductor manufacturing and microelectronics.
• Cationic UV-Curing Initiator: Used in UV-curable inks, coatings, adhesives, and fiber optics for rapid, low-energy curing.
• Catalyst for Polymerization: Initiates the ring-opening polymerization of epoxides, vinyl ethers, and other monomers.
• Organic Synthesis Reagent: Employed as a versatile arylating or alkoxylating agent in pharmaceutical and fine chemical synthesis.
• Crosslinking Agent: Facilitates the crosslinking of polymers and resins to enhance thermal and mechanical properties.
• Research & Development: Serves as a valuable tool in academic and industrial R&D for developing new photochemical processes and materials.

Basic Information

Item	Details
Product Name	Bis(4-tert-Butylphenyl)Iodonium p-Toluenesulfonate
CAS No.	131717-99-2
Molecular Formula	C27H33IO3S
Molecular Weight	588.52 g/mol
Synonyms	Bis(4-tert-butylphenyl)iodonium tosylate; (4-tert-Butylphenyl)phenyliodonium p-toluenesulfonate; Bis(4-(1,1-dimethylethyl)phenyl)iodonium 4-methylbenzenesulfonate; Iodonium, bis(4-(1,1-dimethylethyl)phenyl)-, 4-methylbenzenesulfonate; Photoacid Generator 290; PAG 290; DTBPI-Ts; Diaryliodonium Tosylate Salt
EINECS	Contact for details

Quality Control

Every batch of our Bis(4-tert-Butylphenyl)Iodonium p-Toluenesulfonate is manufactured and tested under a strict quality management system. We ensure compliance with high-purity standards critical for photoresist and UV-curing applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee batch-to-batch consistency and performance reliability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) for long-term storage 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 (as Pb)	≤ 10 ppm
Residual Solvents (GC)	Meets ICH guidelines

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