Description

Iodonium, Bis[4-(1,1-Dimethylethyl)Phenyl]-, 1,1,2,2,3,3,4,4-Octafluoro-1,4-Butanedisulfonate (2:1) is a specialized iodonium salt photoacid generator (PAG) with a unique perfluorinated disulfonate counterion. This compound matters for its exceptional efficiency in generating strong acids upon exposure to UV or deep-UV light, which is critical for initiating cationic polymerization and catalyzing high-precision chemical reactions. It is primarily needed by manufacturers in the electronics and advanced materials sectors for photoresist formulations, photo-curable coatings, and as a catalyst precursor in fine chemical synthesis.

Application

• Deep-UV (DUV) and Extreme Ultraviolet (EUV) Photoresists: A key photoacid generator (PAG) in advanced semiconductor manufacturing for creating sub-micron circuit patterns.
• Cationic UV-Curable Coatings and Inks: Initiates the rapid polymerization of epoxides and vinyl ethers for high-performance, scratch-resistant finishes.
• Chemical Amplification Resist Systems: Enables high-sensitivity imaging in photolithography for microelectronics and optoelectronics.
• Polymer Synthesis: Serves as an initiator or catalyst for controlled cationic polymerization processes.
• Fine Chemical and Pharmaceutical Synthesis: Acts as a catalyst or reagent in specialized organic transformations requiring strong, photogenerated acid catalysis.
• Advanced Material Research: Used in R&D for developing novel photo-responsive polymers and functional materials.

Basic Information

Product Name	Iodonium, Bis[4-(1,1-Dimethylethyl)Phenyl]-, 1,1,2,2,3,3,4,4-Octafluoro-1,4-Butanedisulfonate (2:1)
CAS No.	799274-55-8
Molecular Formula	C28H30F8I2O6S2
Molecular Weight	964.52 g/mol
Synonyms	Bis(4-tert-butylphenyl)iodonium 1,1,2,2,3,3,4,4-octafluoro-1,4-butanedisulfonate; (4-tert-Butylphenyl)phenyliodonium Perfluorobutane Disulfonate; Iodonium, bis(4-(1,1-dimethylethyl)phenyl)-, 1,1,2,2,3,3,4,4-octafluoro-1,4-butanedisulfonate (2:1); Photoacid Generator PAG; DTBPI-PFBS; Bis(4-tert-butylphenyl)iodonium Perfluorobutanesulfonate; Iodonium Salt Photoinitiator
EINECS	Contact for details

Quality Control

Our Iodonium, Bis[4-(1,1-Dimethylethyl)Phenyl]-, 1,1,2,2,3,3,4,4-Octafluoro-1,4-Butanedisulfonate (2:1) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity, NMR and IR for structural confirmation, and ICP-MS for trace metal analysis, to ensure consistent performance in sensitive photolithographic applications. Certificates of Analysis (COA) with detailed specifications are provided to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed in a dry environment. For long-term storage, consider using desiccants or storing under an inert atmosphere such as argon or nitrogen to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Specific Impurities (HPLC)	Individual ≤ 0.5%, Total ≤ 1.0%

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