Photoinitiators
Photoinitiator 184
1-Hydroxycyclohexyl phenyl ketone
The low-odor, low-yellowing workhorse for clear coatings and food-safe ink systems.
Product Description
Photoinitiator 184 is an efficient alpha-hydroxy ketone Type I initiator offering one of the best cost-performance balances for UV-curable clear coats. It generates highly active radicals under 250–350 nm mercury lamp emission and provides excellent surface cure with minimal yellowing after cure.
Its relatively low odor and low volatility make 184 a preferred choice for furniture varnishes, paper overprint varnishes and UV inks for food and sensitive packaging, where post-cure odor complaints must be avoided.
Aolong 184 is crystallized to ≥99.0% HPLC assay with controlled residual solvents, supporting compliance testing for Swiss Ordinance and Nestlé guidance listings in food-contact ink applications.
Key Features
- Low odor — suitable for food packaging inks and indoor coatings
- Excellent surface cure with very low post-yellowing
- Cost-efficient for high-volume clear coating lines
- Compatible with amine synergists for faster line speeds
Applications
- UV clear varnishes for furniture, flooring and paper
- UV inks for paper and flexible packaging
- UV adhesives for laminating and electronics
- Optical fiber coatings and clear castings
- Blends with ITX/EDB for pigmented systems
Specifications
| CAS No. | 947-19-3 |
|---|---|
| Molecular Formula | C13H16O2 |
| Molecular Weight | 204.26 |
| Appearance | White crystalline powder |
| Assay (HPLC) | ≥ 99.0% |
| Melting Point | 47 – 50 °C |
| Loss on Drying | ≤ 0.5% |
| Clarity (10% in toluene) | Clear and transparent |
Packaging & Storage
25 kg fiber drum with PE liner, 1 kg aluminum-foil sample bag. Store cool, dry and protected from light; shelf life 24 months in original sealed packaging.
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