Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

BASF IRGACURE 819 Photoinitiator

BASF IRGACURE 819 is a high-efficiency UV photoinitiator in the IRGACURE series, yellow powder, suitable for thick films/white systems/glass fiber-reinforced polyester/styrene, compoundable with IRG 184/651, compatible with UV absorbers for outdoor varnishes, ensuring curing efficiency and anti-yellowing.

Features Of BASF IRGACURE 819 Photoinitiator

  1. Efficient UV initiation - Rapid free-radical generation under UV, suitable for thick films/high-opacity systems, improving through-cure

  2. Anti-yellowing/weatherability - Anti-UV yellowing, compoundable with light stabilizers, suitable for outdoor varnishes, extending coating life

  3. Excellent compounding synergy - Compoundable with IRG 184/651, improving curing efficiency, suitable for glass fiber-reinforced systems

  4. Long-wave absorption - Dual peaks at 295nm/370nm, compatible with various UV light sources/UV absorbers

  5. High-opacity compatibility - Low dosage achieves excellent curing in white/colored paints, reducing formulation costs

Typical Applications Of BASF IRGACURE 819 Photoinitiator

  1. Thick-film UV curing - Thick coatings, ensuring through-cure, ideal for high-opacity white/colored paints

  2. Glass fiber-reinforced materials - Polyester/styrene prepregs, improving curing efficiency and mechanical properties

  3. Outdoor UV varnishes - Compoundable with light stabilizers, for outdoor wood/metal varnishes, anti-aging

  4. Printing inks - White screen inks, improving curing speed and surface curing, suitable for thin coats

  5. Electronic materials - Optical fiber coatings/solder masks, suitable for fine-pattern curing, improving resolution

Specifications Of BASF IRGACURE 819 Photoinitiator

Chemical NamePhenylbis(2,4,6-trimethylbenzoyl)phosphine oxide
CAS No162881-26-7
Appearance (25℃)Yellow powder
Molecular Weight418.5 g/mol
Melting Point127-133℃
Density (20℃)1.19g/cm³
Flash Point168℃
Absorption Peaks295nm, 370nm (in methanol)


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