Properties of Irgacure 907 CAS 71868-10-5 Photoinitiator 907
Appearance: white to yellowish powder
Density: 1.15 g/cm3
Melting Point: 74-76 °C(lit.)
Flash Point: 207.9ºC
Boiling Point: 420.1ºC at 760 mmHg
Refractive Index: 1.591
Applications of Irgacure 907 CAS 71868-10-5 Photoinitiator 907
Irgacure 907 is a another commonly used UV photoinitiator, which belongs to Norish type I Photoinitiator. This kind of photoinitiator produces free radical under UV irradiation, and sets off the polymerization directly. Irgacure 907 is primarily used to initiate the photo-polymerization of chemically unsaturated prepolymers – e.g. acrylates in combination with mono- or multi-functional vinyl monomers.
Irgacure 907 has a high photoinitiator efficiency and absorbs wavelengths of 330 to 385 nm. Its unique high absorption properties make it particularly suitable for pigment-based UV-curable coatings, inks, and adhesive colored curing systems, excellent for blue color. Irgacure 907 can be used together with photosensitizer DETX and 2-Isopropylthioxanthone (ITX), to further enhance the absorbability and easily achieve the best balance between surface and inside drying effect.
IRGACURE 907 is tested to be used alone or in combination with other appropriate photoinitiators, such as IRGACURE 184, applied for UV-curable inks and varnishes on paper, metal and plastic surfaces. IRGACURE 907 and photosensitizer thioxanthrone are commonly used in fine arts ink (offset ink, screen ink) and photoetchant and solder resist ink applications.
Suggested dosage:
offset ink: 4-6% IRGACURE 907
screen ink: 2-4% IRGACURE 907 + 0.2-0.5% IRGACURE 184
varnish: 0.1-1% IRGACURE 907 + 2-5% IRGACURE 184
photoetchant: 3-6% IRGACURE 907
Irgacure 907 is widely used in pigmented ink systems, paper/metal and plastic varnishes and electronic inks. It can also be used as an UV absorber in industries such as cosmetics. The recommended dosage is 2-6%.
