Photoinitiator TPO-L/Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate/CAS No.: 84434-11-7

Photoinitiator TPO-L
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Photoinitiator TPO-L

1. Product Identification

  • Product Name: Photoinitiator TPO-L

  • Chemical Name: Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate

  • CAS No.:84434-11-7

  • Molecular Formula:C₁₈H₂₁O₃P

  • Molecular Weight: 316.33 g/mol

2. Product Description

Photoinitiator TPO-L is a liquid Type I free-radical photoinitiator with excellent absorption in the UV and near-visible range. It is especially suitable for LED curing systems and provides fast curing speed and low yellowing.

3. Typical Properties

ItemSpecification
AppearanceYellow transparent liquid
Assay≥ 95%
Density (25 °C)1.146 g/cm³
Volatile ContentMax. –
Flash Point242.9 °C

Note: The above values are typical and not intended as specifications.

4. Solubility

  • Soluble in most UV-curable resins and monomers

  • Good compatibility with acrylates, methacrylates, and unsaturated polyesters

5. Applications

  • UV-curable inks

  • UV coatings

  • UV adhesives

  • Electronics and optical coatings

  • LED curing formulations