Description
Photoinitiator 819 / irgacure-819 / Omnirad 819 CAS 162881-26-7
| Items | Specifications | Results |
| Appearance | Pale yellow powder | Pale yellow powder |
| Assay (HPLC) | ≥99.0％ | 99.53% |
| Melting point | 131~135°C | 131.9~132.9°C |
| Volatile matter | ≤0.3% | 0.23% |
| Clarity | Clear | conform |
| Conclusion | The results conforms with standards | |
what is Sinocure® 819?
Sinocure® 819 (chemical name: Phenylbis(2,4,6-trimethylbenzoyl)phosphineoxide ) is a highly efficient general-purpose UV photoinitiator for initiating UV polymerization of unsaturated prepolymerization systems. It can be used for the curing of thick film systems, especially for white systems, glass reinforced polyester/ Styrene system. It can also be used for outdoor varnish when used in combination with light stabilizers.
Sinocure® 819 function
Sinocure® 819 has been tested for printing inks and prepreg systems on wood, metal, plastic, paper and fiber surfaces.
In high opacity white paints, paints and inks containing titanium white or other pigments, the addition of a small amount of Sinocure® 819 gives the coating excellent cure and UV yellowing resistance. Since Sinocure® 819 has excellent absorption properties, it can be used in thick film systems.
Sinocure® 819 can be used in conjunction with other photoinitiators such as IRGACURE 184 or IRGACURE 651. The combination of Sinocure® 819 and IRGACURE 651 is particularly suitable for curing polyester/styrene resin systems, such as glass fiber reinforced materials.
Since the Sinocure® 819 can be used in combination with an ultraviolet light absorber, such as TINUVIN 400, the photoinitiator 819 can be applied to a UV curable coating requiring weather resistance.
In white and thick film systems, there is the fastest cure speed. Although the yellow phase appears slightly at the time of curing, it has a photobleaching effect at a later stage.
Sinocure® 819 recommended dosage:
Clear acrylic and unsaturated polyester/styrene coatings 0.1 – 0.2% IRGACURE819 1 – 2% IRGACURE184
White acrylic and unsaturated polyester/styrene coatings 0.5 – 1% IRGACURE819 1 – 2% IRGACURE184
Colored acrylic formula 0.5 – 1% IRGACURE819 1 – 2% IRGACURE184
White Screen Printing Ink 0.5 – 1.5% IRGACURE819 1 – 2% IRGACURE184
Glass fiber reinforced unsaturated polyester/styrene prepreg 0.1 – 0.2% IRGACURE819
Safety and Operation of Irgacure 819 As an industrial chemical, the following precautions should be strictly observed:
1) Work in a clean, well-ventilated environment.
2) Wear eye masks to avoid irritation to the eyes.
3) The sensitivity of the Sinocure® 819 to visible light is determined, so direct sunlight should be avoided.
4) The product should be stored in a place where direct sunlight is avoided.
Sinocure® 819 Packaging and Shipping
Packing:20kg/carton box.
Delivery: within 5-7 working days.
Sinocure® 819 storage
Stored in a cool dry place out of direct sunlight.
Same series products
| Product name | CAS NO. | Chemical name |
| Sinocure® TPO | 75980-60-8 | Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide |
| Sinocure® TPO-L | 84434-11-7 | Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate |
| Sinocure® 819/920 | 162881-26-7 | Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide |
| Sinocure® 819 DW | 162881-26-7 | Irgacure 819 DW |
| Sinocure® ITX | 5495-84-1 | 2-Isopropylthioxanthone |
| Sinocure® DETX | 82799-44-8 | 2,4-Diethyl-9H-thioxanthen-9-one |
| Sinocure® BDK/651 | 24650-42-8 | 2,2-Dimethoxy-2-phenylacetophenone |
| Sinocure® 907 | 71868-10-5 | 2-Methyl-4′-(methylthio)-2-morpholinopropiophenone |
| Sinocure® 184 | 947-19-3 | 1-Hydroxycyclohexyl phenyl ketone |
| Sinocure® MBF | 15206-55-0 | Methyl benzoylformate |
| Sinocure® 150 | 163702-01-0 | Benzene, (1-methylethenyl)-, homopolymer,ar-(2-hydroxy-2-methyl-1-oxopropyl) derivs |
| Sinocure® 160 | 71868-15-0 | Difunctional alpha hydroxy ketone |
| Sinocure® 1173 | 7473-98-5 | 2-Hydroxy-2-methylpropiophenone |
| Sinocure® EMK | 90-93-7 | 4,4′-Bis(diethylamino) benzophenone |
| Sinocure® PBZ | 2128-93-0 | 4-Benzoylbiphenyl |
| Sinocure® OMBB/MBB | 606-28-0 | Methyl 2-benzoylbenzoate |
| Sinocure® 784/FMT | 125051-32-3 | BIS(2,6-DIFLUORO-3-(1-HYDROPYRROL-1-YL)PHENYL)TITANOCENE |
| Sinocure® BP | 119-61-9 | Benzophenone |
| Sinocure® 754 | 211510-16-6 | Benzeneacetic acid, alpha-oxo-, Oxydi-2,1-ethanediyl ester |
| Sinocure® CBP | 134-85-0 | 4-Chlorobenzophenone |
| Sinocure® MBP | 134-84-9 | 4-Methylbenzophenone |
| Sinocure® EHA | 21245-02-3 | 2-Ethylhexyl 4-dimethylaminobenzoate |
| Sinocure® DMB | 2208-05-1 | 2-(Dimethylamino)ethyl benzoate |
| Sinocure® EDB | 10287-53-3 | Ethyl 4-dimethylaminobenzoate |
| Sinocure® 250 | 344562-80-7 | (4-Methylphenyl) [4-(2-methylpropyl)phenyl] iodoniumhexafluorophosphate |
| Sinocure® 369 | 119313-12-1 | 2-Benzyl-2-(dimethylamino)-4′-morpholinobutyrophenone |
| Sinocure® 379 | 119344-86-4 | 1-Butanone, 2-(dimethylamino)-2-(4-methylphenyl)methyl-1-4-(4-morpholinyl)phenyl- |
| Sinocure® 938 | 61358-25-6 | Bis(4-tert-butylphenyl)iodonium hexafluorophosphate |
| Sinocure® 6992 MX | 75482-18-7 & 74227-35-3 | Cationic Photoinitiator UVI-6992 |
| Sinocure® 6992 | 68156-13-8 | Diphenyl(4-phenylthio)phenylsufonium hexafluorophosphate |
| Sinocure® 6993-S | 71449-78-0 & 89452-37-9 | Mixed type triarylsulfonium hexafluoroantimonate salts |
| Sinocure® 6993-P | 71449-78-0 | 4-Thiophenyl phenyl diphenyl sulfonium hexafluoroantimonate |
| Sinocure® 1206 | Photoinitiator APi-1206 |
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