(4-Isobutylphenyl)(p-tolyl)iodonium Hexafluorophosphate CAS 344562-80-7

Chemical Name: (4-Isobutylphenyl)(p-tolyl)iodonium Hexafluorophosphate

Synonymous Names: (4-Methylphenyl)[4-(2-methylpropyl)phenyl] iodonium Hexafluorophosphate; 4-Isobutylphenyl-4′-methylphenyliodonium Hexafluorophosphate; Photoinitiator 250; Irgacure 250; Omnicat 250

CAS No.: 344562-80-7

Molecular Formula: C17H20F6IP

Molecular Weight: 496.21 g/mol

EINECS No.: 810-891-5

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Description
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(4-Isobutylphenyl)(p-tolyl)iodonium Hexafluorophosphate is a white crystalline powder in its pure form. It is a diaryliodonium salt used as a cationic photoinitiator for UV and radiation-curable systems.

Structural formula:

Product Specification

Item	Specification
Product Name	(4-Isobutylphenyl)(p-tolyl)iodonium Hexafluorophosphate
CAS Number	344562-80-7
Appearance	White crystal powder
Purity (HPLC)	≥99.0%
Molecular Formula	C17H20F6IP
Molecular Weight	496.21 g/mol

(4-Isobutylphenyl)(p-tolyl)iodonium Hexafluorophosphate Applications

UV-Curable Coatings: (4-Isobutylphenyl)(p-tolyl)iodonium Hexafluorophosphate is used as a cationic photoinitiator in UV-curable coating systems. It starts the curing of epoxy- and oxetane-based materials after light exposure, helping convert the liquid formulation into a cured coating.

UV-Curable Inks: The product is used in cationic UV-curable inks, including printing inks. It can be used in systems for paper, metal, wood and plastic substrates, depending on the formulation.

UV-Curable Adhesives: (4-Isobutylphenyl)(p-tolyl)iodonium Hexafluorophosphate is used in cationically curable adhesive systems based on suitable epoxy or other cationically polymerizable materials. It provides the photoacid needed to start curing after light exposure.

Packaging & Storage

Packaging: Our (4-Isobutylphenyl)(p-tolyl)iodonium Hexafluorophosphate is packed in 25 kg paper drums.

Store away from light in a cool, dry place; keep the container tightly sealed.