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

IGM Omnirad 651 Photoinitiator

IGM Omnirad 651 is a high-efficiency benzoin ether photoinitiator from IGM Resins’ Omnirad series. It delivers rapid UV-curable polymerization under medium-pressure mercury lamps, offering excellent reactivity and low yellowing. Widely used in inks, coatings, and adhesives for superior surface cure and shelf stability.
  • igm omnirad 651 photoinitiator_dcefd846
  • igm omnirad 651 photoinitiator_dcefd846

Features Of IGM Omnirad 651 Photoinitiator

  1. Highly efficient Type I photoinitiator with rapid free-radical generation under UV-A and UV-LED irradiation.

  2. Excellent solubility in common acrylate monomers and oligomers, ensuring homogeneous formulation stability.

  3. Low yellowing tendency, supporting high clarity and color fidelity in final cured films.

  4. Good thermal stability up to 80 °C, enabling safe handling and storage under standard industrial conditions.

  5. Compatible with both conventional mercury lamp and modern 365–405 nm LED curing systems.

Typical Applications Of IGM Omnirad 651 Photoinitiator

  1. UV-curable coatings for wood, plastic, and metal substrates.

  2. Inkjet inks for digital printing on packaging, labels, and decorative surfaces.

  3. 3D printing resins (SLA/DLP) requiring fast cure speed and low shrinkage.

  4. Adhesives and laminating varnishes in flexible packaging and electronics assembly.

  5. Overprint varnishes and functional topcoats in graphic arts and industrial finishing.

Specifications Of IGM Omnirad 651 Photoinitiator

Chemical TypeBenzoin ether derivative (α-hydroxyketone)
Product FormFree-flowing white to off-white crystalline powder
AppearanceCrystalline solid
Primary ApplicationsFree-radical UV/LED curing systems
SolubilityFreely soluble in most acrylates, methacrylates, and reactive diluents
Key FeaturesRapid initiation, low odor, non-yellowing
BenefitsEnables high-speed curing, improves surface hardness, reduces post-cure migration
Storage ConditionsStore in original container at 15–25 °C, protect from light and moisture


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