Omnirad 2959
IGM Resins USA Inc. · Omnirad
Omnirad 2959 is a highly efficient non-yellowing type I photoinitiator for the UV curing of systems comprising unsaturated monomers and prepolymers. It is especially suited for low odor applications and water-borne systems based on acrylate or unsaturated polyester resins. The active hydroxy group can react with functionalized unsaturated resins to enhance compatibility.
- Water-borne system compatible
- Yellowing resistance
- High efficiency
- Low odor
- Resin compatibility
Specifications
Identifiers
- Chemical name
- 1-[4-(2-Hydroxyethoxyl)-phenyl]-2-hydroxy-2-methylpropanone
- CAS number(s)
- 106797-53-9
- EC number
- 402-670-3
- Molecular formula
- C12H16O4
- InChI key
- GJKGAPPUXSSCFI-UHFFFAOYSA-N
- INCI name
- 2-Hydroxy-1-[4-(2-hydroxyethoxy)phenyl]-2-methylpropan-1-one
- Synonyms
- 2-Hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone, 2-Hydroxy-1-(4-(2-hydroxyethoxy)phenyl)-2-methylpropan-1-one, Free Radical Photoinitiator - Type I
Technical specifications
Properties
| Property | Value | Unit |
|---|---|---|
| Physical State | Solid | - |
| Appearance | Powder | - |
| Color | White | - |
| Molecular Weight | 224.3 | g/mol |
| pH | 6.1 - 6.2 (as aqueous solution) | - |
| Melting Point | 86.5 - 89.5 | °C |
| Boiling Point | 331 (at 101.3 kPa) | °C |
| Vapor Pressure | 0.00007 (at 25°C) | Pa |
| Relative Density | 1.284 (at 20°C) | - |
| Water Solubility | 7.6 (at 25°C) | g/L |
| Partition Coefficient | log Pow 0.84 (at 23°C) | - |
Specifications
| Test Condition | Specification | Value | Unit | Test Method |
|---|---|---|---|---|
| - | Appearance | White to Pale Yellow Powder (Pass) | - | Visual |
| - | Purity | ≥ 97.0 | % | HPLC Analysis |
| - | Volatiles | ≤ 0.5 | % | Loss on Drying |
| - | Moisture Content | ≤ 0.5 | % | Karl Fischer, ISO 4317 |
| at 425 nm, 10g/100ml Methanol | Transmittance | ≥ 80.0 | % | Spectrophotometer |
| at 500 nm, 10g/100ml Methanol | Transmittance | ≥ 95.0 | % | Spectrophotometer |
| 10g/100ml Methanol | Clarity of Solution | Pass | - | Visual |
| - | Melting Point | 86.5 - 89.5 | °C | - |
| by weight, at 20 °C | Solubility in butyl acetate | ~ 3 | % | - |
| by weight, at 20 °C | Solubility in hexanediol diacrylate (HDDA) | ~ 5 | % | - |
| by weight, at 20 °C | Solubility in trimethylolpropane triacrylate (TMPTA) | ~ 5 | % | - |
| by weight, at 20 °C | Solubility in tripropyleneglycol diacrylate (TPGDA) | ~ 5 | % | - |
| - | Shelf Life | Durable for at least 36 months | - | - |
- Product groups
- PhotoinitiatorsCoating Additives
- Applications
- Radiation-curable coatingsPaper & packaging coatingsWater-based coatings
- Functions
- Curing agentPhotoinitiator
- Market segments
- Protective coatingsPrinting inks & coatingsFood packaging
Documents
- Request a copy
Technical Data Sheet (TDS)
Specifications & performance data
- Request a copy
Safety Data Sheet (SDS)
Safety information & handling