Chemical Properties
white crystalline powder
Uses
Diphenyl phosphate can be used as an organic catalyst for the ring-opening polymerization (ROP) of renewable 5-alkyl δ-lactones. In combination with zinc iodide, it forms a novel initiating system for the living cationic polymerization of isobutyl vinyl ether.
Definition
ChEBI: Diphenyl phosphate is an aryl phosphate and metabolite of the flame retardant Triphenyl Phosphate and also a metabolite of 2-Ethylhexyl diphenyl phosphate.
Purification Methods
Crystallise it from CHCl3/pet ether. [Cherbuliez in Organo Phosphorus Compounds (Kosolapoff & Maier eds) Wiley Vol 6 pp 211-577 1973, Beilstein 6 IV 714.]
Toxics Screening Level
The initial threshold screening level (ITSL) for diphenyl phosphoric acid is 0.1 μg/m3 based on annual averaging time.
References
[1] XIAO YAN . Urinary metabolites of phosphate flame retardants in workers occupied with e-waste recycling and incineration[J]. Chemosphere, 2018, 200: Pages 569-575. DOI:
10.1016/j.chemosphere.2018.02.148.
[2] MITSUO SAWAMOTO Toshinobu H Masami Kamigaito. Living cationic polymerization of isobutyl vinyl ether by the diphenyl phosphate/zinc iodide initiating system[J]. Polymer Bulletin, 1988, 20 5: 407-412. DOI:
10.1007/BF01153430.
