Chemical Product Library / Reference

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

Chemical identity, technical indicators, performance and application reference. Confirm specifications and regulatory suitability against supplier documentation.

Molecular structure for Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide

Chemical identity

English nameDiphenyl(2,4,6-trimethylbenzoyl)phosphine oxide
English synonymsTPO;Photoinitiator TPO;Lucirin TPO
Chinese name2,4,6-三甲基苯甲酰基-二苯基氧化膦
Chinese synonymsTPO;光引发剂TPO;Lucirin TPO
Chemical categoryPhotoinitiators
CAS No.75980-60-8
EINECS No.278-355-8
Molecular formulaC22H21O2P
Molecular weight348.38
PubChem structure images are reference depictions, not proof of composition, purity, grade, or regulatory status. Mixtures and polymers may not have a single representative structure.

Technical indicators

Assay ≥99.0%; melting point 88–92°C; volatile matter ≤0.2%; ash ≤0.1%

Performance characteristics

Pale yellow crystalline powder, highly efficient photoinitiator, suitable for thick films and pigmented systems

Application scenarios

UV-curable coatings, inks, adhesives, composites, 3D printing