Photoinitiators
Photoinitiator EHA
2-Ethylhexyl 4-(dimethylamino)benzoate
The high-boiling liquid amine synergist — better compatibility than EDB.
Product Description
EHA is the 2-ethylhexyl ester analog of EDB, trading a little synergist efficiency for substantially better solubility in acrylate oligomers and lower crystallization risk in formulations. It is the preferred amine for high-solids and cold-climate ink systems where EDB would precipitate.
It accelerates Type II initiators (ITX, DETX, MBP, BMS) and counters oxygen inhibition in Type I packages. Typical dosage is 1:0.5 to 1:1 versus the Type II component.
Key Features
- Excellent low-temperature solubility — no crystallization
- Long-chain ester reduces odor versus EDB
- Strong surface-cure acceleration
- Liquid form for simple cold dosing
Applications
- Dark UV inks with ITX/DETX
- Clear coatings with oxygen-inhibition issues
- Food-packaging ink synergist packages
- Adhesives and pressure-sensitive systems
- UV LED ink formulations
Specifications
| CAS No. | 21245-02-3 |
|---|---|
| Molecular Formula | C17H27NO2 |
| Molecular Weight | 277.40 |
| Appearance | Pale yellow clear liquid |
| Assay (GC) | ≥ 98.0% |
| Water Content (KF) | ≤ 0.2% |
Packaging & Storage
25 kg HDPE pail or 200 kg steel drum. Store cool and dry; shelf life 24 months.
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