Phosphine oxide,[4-[[4-[(4-methoxyphenyl)ethynyl]phenyl]ethynyl]phenyl]diphenyl- is a chemical compound registered under CAS number 676455-99-5, with the molecular formula C35H25O2P and a molecular weight of about 508.56 g/mol. FireTardant supplies Phosphine oxide,[4-[[4-[(4-methoxyphenyl)ethynyl]phenyl]ethynyl]phenyl]diphenyl- for laboratory research and bulk production; product code 697303. Send an inquiry for purity, packaging, price and lead time.