Product Name: photoinitiator TPO / photocure TPO Chemical Name: 2,4,6-Trimethylbenzoyldiphenylphosphine oxide CAS No.: 75980-60-8 EINEC No.: 278-355-8 Molecular Weight: 349 Appearance: Yellow crystalline powder Assay (HPLC): 98% min Package: 20 Kgs net/fiber drum Uses: Highly efficient photoinitiator for UV-curable systems. Storage: Shelf life for at least 1 year when its stored in closed containers in room temperature and dry conditions. Health and Safety Information: Please refer to our Material Safety Data Sheet. 20 Kgs net/fiber drum