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Purity: 97%;
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| Product Name | Bis(4-isopropylphenyl)iodonium chloride |
| Synonyms | Bis(4-isopropylphenyl)iodoniumchloride;Iodonium,Bis[4-(1-methylethyl)pehenyl]-chloride;Iodonium,bis[4-(1-methylethyl)phenyl]-,chloride(PF6);bis(4-propan-2-ylphenyl)iodanium;Iodonium,bis[4-(1-methylethyl)phenyl]-,chloride;Bis(4-Cumyl)IodoniumChloride;Di(4-isopropylphenyl)iodinechloride |
| CAS NO | 97671-66-4 |
| Purity | 97% above |
| MF | C18H22ClI |
| MW | 400.72475 |
| Contact | selina@coreychem.com |
Chemical name: Bis(4-isopropylphenyl)iodonium chloride
Molecular formula: C₁₈H₂₂ClI
Appearance: White to light yellow crystalline powder
Chemical type: Diaryliodonium salt (onium salt)
Photochemical behavior: Under UV or visible light irradiation, it decomposes to release reactive cations or radicals.
This compound is a typical diaryliodonium-type photoinitiator.
Upon UV light exposure (typically 250–400 nm), it undergoes photolytic cleavage:
Ar2I+→hνAr•+ArI+H+Ar_2I^+ \xrightarrow{h\nu} Ar^• + ArI + H^+
Generates aryl radicals and strong acidic species (H⁺ or Lewis acids).
These active species initiate cationic polymerization of epoxy resins, vinyl ethers, and other monomers.
Acts as a photoacid source, releasing strong acids in the exposed regions.
Widely used in photoresists, semiconductor lithography, and printed circuit board (PCB) fabrication to enable image formation and pattern transfer.
When combined with electron donors such as triarylamines, ethanolamines, or alkoxy compounds,
it forms a hybrid radical/cationic initiation system,
improving curing efficiency in UV-curable inks, coatings, and adhesives.
| Application Field | Function / Use |
|---|---|
| UV-curable epoxy systems | Initiates cationic polymerization for high-strength, transparent coatings |
| Photoresists (lithography) | Acts as a photoacid generator (PAG) to trigger pattern development |
| 3D printing resins (SLA/DLP) | Enhances curing speed, accuracy, and layer resolution |
| Electronic encapsulants | Used in low-shrinkage, high-adhesion UV-curable formulations |
| Security inks & photoadhesives | Enables rapid curing and high-gloss finishes |
Light-sensitive — store in a cool, dry, and dark environment.
May cause mild irritation to skin or eyes; handle with gloves and protective equipment.
Recommended storage: sealed containers, away from heat and direct sunlight, in a well-ventilated area.
Bis(4-isopropylphenyl)iodonium chloride is a high-efficiency cationic photoinitiator and photoacid generator (PAG).
It decomposes under UV or visible light to generate active cations that initiate polymerization of epoxy, vinyl ether, and acrylate monomers.
It is widely used in UV-curable systems, photolithography, electronic encapsulation, 3D printing resins, and security coatings.
1KG per bag; Or package according to customer needs
