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162881-26-7
bosschem
162881-26-7
Product name: Photoinitiator 819
Englishalias: PHENYLBIS(2,4,6-TRIMETHYLBENZOYL)PHOSPHINEOXIDE;Phosphineoxide,phenylbis(2,4,6-trimethylbenzoyl)-;Photoinitiator819;Phenylbis(Chemicalbook2,4,6-triMethylbenzoyl)phosphineoxide97%,powder;(Phenylphosphoryl)bis(mesitylmethanone);formerIRGACURE819;OMNIRAD380;OMNIRAD819
CAS: 162881-26-7
Molecular formula: C₂₆H₂₇O₃P
Appearance: White to light yellow crystalline powder
Package: 1kg/bag, 5kg/bag, 25kg/drum
Photoinitiator 819 is a highly efficient and widely used free radical Type I photoinitiator. It is particularly valued for its exceptional reactivity under UV light, especially in thick and pigmented systems where penetration of UV light is challenging. Its key feature is a strong absorption profile that extends into the longer wavelengths of the UV spectrum. Known by its chemical name Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide and under trade names such as IRGACURE 819, it is a crucial component in UV-curing applications, enabling rapid polymerization and high conversion rates. It is a versatile initiator suitable for a variety of resin chemistries.
Test Item | Unit | Result |
Assay (HPLC) | % | ≥ 99.0 |
Melting Point | °C | 127 - 131 |
Loss on Drying | % | ≤ 0.5 |
Absorption Maximum (in DCM) | nm | 370, 390, 430 (sh) |
Residual Solvents | % | ≤ 0.1 |
Heavy Metals (as Pb) | ppm | ≤ 10 |
Test Item | Unit | Result |
1.Primary photoinitiator for UV-curable coatings, inks, and adhesives, especially effective in white and highly pigmented formulations.
2.Used for curing thick sections and composite materials due to its excellent deep-section curing properties.
3.Essential component in the manufacture of LED-based UV curing systems because of its long-wavelength absorption.
4.Applied in the electronics industry for solder masks and photoresists.
5.Used in the production of graphic arts and 3D printing (additive manufacturing) resins.
6.Effective in clear coatings and wood finishes where rapid surface cure and low yellowing are required.
Photoinitiator 819 is considered safe for industrial use when handled according to proper safety procedures. It may cause skin and eye irritation. Direct contact with skin and eyes should be avoided. Use in a well-ventilated area and wear appropriate personal protective equipment (PPE), including gloves and safety glasses. For final cured products, any unreacted initiator is typically present in minimal amounts and is considered safe.
Store in a cool, dry, and well-ventilated place.
Keep container tightly closed and sealed until ready for use.
Protect from light and moisture.
Store away from heat and incompatible materials.
Photoinitiator 819 is typically packaged in dark, light-proof bags (e.g., aluminum foil bags) with an inner polyethylene liner to prevent degradation by ambient light and moisture.
Standard packaging includes 1 kg/bag, 5 kg/bag, and 25 kg/fiber drum.
Classified as non-hazardous for transport under normal conditions, but always check local regulations.
Product name: Photoinitiator 819
Englishalias: PHENYLBIS(2,4,6-TRIMETHYLBENZOYL)PHOSPHINEOXIDE;Phosphineoxide,phenylbis(2,4,6-trimethylbenzoyl)-;Photoinitiator819;Phenylbis(Chemicalbook2,4,6-triMethylbenzoyl)phosphineoxide97%,powder;(Phenylphosphoryl)bis(mesitylmethanone);formerIRGACURE819;OMNIRAD380;OMNIRAD819
CAS: 162881-26-7
Molecular formula: C₂₆H₂₇O₃P
Appearance: White to light yellow crystalline powder
Package: 1kg/bag, 5kg/bag, 25kg/drum
Photoinitiator 819 is a highly efficient and widely used free radical Type I photoinitiator. It is particularly valued for its exceptional reactivity under UV light, especially in thick and pigmented systems where penetration of UV light is challenging. Its key feature is a strong absorption profile that extends into the longer wavelengths of the UV spectrum. Known by its chemical name Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide and under trade names such as IRGACURE 819, it is a crucial component in UV-curing applications, enabling rapid polymerization and high conversion rates. It is a versatile initiator suitable for a variety of resin chemistries.
Test Item | Unit | Result |
Assay (HPLC) | % | ≥ 99.0 |
Melting Point | °C | 127 - 131 |
Loss on Drying | % | ≤ 0.5 |
Absorption Maximum (in DCM) | nm | 370, 390, 430 (sh) |
Residual Solvents | % | ≤ 0.1 |
Heavy Metals (as Pb) | ppm | ≤ 10 |
Test Item | Unit | Result |
1.Primary photoinitiator for UV-curable coatings, inks, and adhesives, especially effective in white and highly pigmented formulations.
2.Used for curing thick sections and composite materials due to its excellent deep-section curing properties.
3.Essential component in the manufacture of LED-based UV curing systems because of its long-wavelength absorption.
4.Applied in the electronics industry for solder masks and photoresists.
5.Used in the production of graphic arts and 3D printing (additive manufacturing) resins.
6.Effective in clear coatings and wood finishes where rapid surface cure and low yellowing are required.
Photoinitiator 819 is considered safe for industrial use when handled according to proper safety procedures. It may cause skin and eye irritation. Direct contact with skin and eyes should be avoided. Use in a well-ventilated area and wear appropriate personal protective equipment (PPE), including gloves and safety glasses. For final cured products, any unreacted initiator is typically present in minimal amounts and is considered safe.
Store in a cool, dry, and well-ventilated place.
Keep container tightly closed and sealed until ready for use.
Protect from light and moisture.
Store away from heat and incompatible materials.
Photoinitiator 819 is typically packaged in dark, light-proof bags (e.g., aluminum foil bags) with an inner polyethylene liner to prevent degradation by ambient light and moisture.
Standard packaging includes 1 kg/bag, 5 kg/bag, and 25 kg/fiber drum.
Classified as non-hazardous for transport under normal conditions, but always check local regulations.
