Chemical name

Diphenyl (2,4,6-trimethylbenzoyl)- phosphine oxide

Molecular formula

C₂₂H₂₁O₂P     

CAS No.

75980-60-8

Structure formula

Quality indicators

Appearance

light yellow powder

Assay (GC)

99.0%

Melting point

91-95℃

Molecular Weight

348.4

Ash

≤0.1%

Loss on drying

≤0.2%

Acid Value

≤0.5 mg KOH/g

Application

PI-TPO is an effective photoinitiator for UV-curable based coatings, adhesives, inks and printing plates. It is typically consumed in unsaturated polyester acrylate based systems in concentrations ranging from 1% to 4% by weight.PI-TPO offers the advantage of good shelf stability, and fast and thorough cure of coatings. It is compatible with unsaturated polyesters, acrylate monomers and oligomers for use in UV-curable systems.

Storage and packing

This product should be sealed and stored in a closed, dry, dark place and avoid sunlight. 20 kg cardboard or 30 cardboards each pallet.