Omnirad 127
IGM Resins USA Inc. · Omnirad
Omnirad 127 is a highly efficient Type I photoinitiator used to initiate the photopolymerization of unsaturated pre-polymers like acrylates in combination with mono- or multifunctional monomers. It is suitable for various pigmented UV inks and clear coatings, particularly in thin coatings such as overprint varnishes and a variety of coating applications.
- High reactivity
- Excellent adhesion
- Low odor
- High curing efficiency
- Oxygen inhibition resistant
Specifications
Identifiers
- Chemical name
- 2-Hydroxy-1-[4-[4-(2-hydroxy-2-methylpropionyl) benzyl)phenyl)-2-methylpropan-1-one
- CAS number(s)
- 474510-57-1
- EC number
- 444-860-9
- Molecular formula
- C21H24O4
- InChI key
- PCKZAVNWRLEHIP-UHFFFAOYSA-N
- INCI name
- 1,1'-(Methylene-di-4,1-phenylene)bis[2-hydroxy-2-methyl-1-propanone]
- Synonyms
- 2-Hydroxy-1-(4-(4-(2-hydroxy-2-methylpropionyl)-benzyl)-phenyl)-2-methylpropan-1-one, 1,1'-(Methylene-di-4,1-phenylene)bis[2-hydroxy-2-methyl-1-propanone], Free Radical Photoinitiator - Type I
Technical specifications
Properties
| Property | Value | Unit |
|---|---|---|
| Physical State | Solid | - |
| Appearance | Powder | - |
| Color | Off-white | - |
| Melting Point | 84.3 | °C |
| Boiling Point | 333 (at 97.3 kPa) | °C |
| Vapor Pressure | <0.16 (at 50°C) | Pa |
| Molecular Weight | 340.42 | g/mol |
| Relative Density | 1.195 (at 20°C) | - |
| Water Solubility | 0.01 (at 20°C) | g/L |
| Partition Coefficient | log Kow 2.3 | - |
| Bulk Density | ~ 700 | kg/m³ |
Specifications
| Test Condition | Specification | Value | Unit | Test Method |
|---|---|---|---|---|
| - | Appearance | Off White Powder (Pass) | - | Visual |
| - | Color | ≤ 6 | - | Gardner, ISO 4630 |
| - | Purity | ≥ 93.0 | % | HPLC Analysis |
| - | Volatiles | ≤ 0.2 | % | GC Analysis |
| - | Moisture Content | 2.0 - 6.0 | % | Karl Fischer, ISO 4317 |
| at 425 nm, 5g/100ml Acetonitrile | Transmittance | ≥ 50.0 | % | Spectrophotometer |
| at 500 nm, 5g/100ml Acetonitrile | Transmittance | ≥ 75.0 | % | Spectrophotometer |
| - | Clarity of Solution | Pass | - | Visual, 5g/100ml Acetonitrile |
| - | Melting Point | 82 - 90 | °C | - |
| by weight, at 20 °C | Solubility in hexanediol diacrylate (HDDA) | ~ 15 | % | - |
| by weight, at 20 °C | Solubility in trimethylolpropane triacrylate (TMPTA) | ~ 15 | % | - |
| by weight, at 20 °C | Solubility in tripropyleneglycol diacrylate (TPGDA) | ~ 15 | % | - |
| - | Shelf Life | Durable for at least 36 months | - | - |
- Product groups
- PhotoinitiatorsCoating Additives
- Applications
- Overprint varnishesRadiation-curable coatings
- Functions
- Curing agentPhotoinitiatorCo-initiator
- Market segments
- Protective coatingsPrinting inks & coatings
Documents
- Request a copy
Technical Data Sheet (TDS)
Specifications & performance data
- Request a copy
Safety Data Sheet (SDS)
Safety information & handling