Triphenyl phosphate

Triphenyl phosphate


IUPAC name Triphenyl phosphate
Identifiers
CAS number	115-86-6^Y
PubChem	8289
ChemSpider	7988^Y
ChEBI	CHEBI:35033^N
ChEMBL	CHEMBL454511^Y
Jmol-3D images	Image 1
SMILES O=P(Oc1ccccc1)(Oc2ccccc2)Oc3ccccc3
InChI InChI=1S/C18H15O4P/c19-23(20-16-10-4-1-5-11-16,21-17-12-6-2-7-13-17)22-18-14-8-3-9-15-18/h1-15H^Y Key: XZZNDPSIHUTMOC-UHFFFAOYSA-N^Y InChI=1/C18H15O4P/c19-23(20-16-10-4-1-5-11-16,21-17-12-6-2-7-13-17)22-18-14-8-3-9-15-18/h1-15H Key: XZZNDPSIHUTMOC-UHFFFAOYAB
Properties
Molecular formula	C₁₈H₁₅O₄P
Molar mass	326.28 g/mol
Appearance	colourless liquid
Density	1.184 g/mL
Melting point	48-50 °C
Boiling point	244 °C 10 mm Hg
Solubility in water	organic solvents
Hazards
Main hazards	harmful
N (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Triphenyl phosphate is the chemical compound with the formula OP(OC₆H₅)₃. This colourless solid is the ester (triester) of phosphoric acid and phenol. It is used as a plasticizer and a fire retardant.^[1]

Triphenylphosphate is prepared by the reaction of phosphorus oxychloride and phenol:

POCl₃ + 3 HOC₆H₅ → OP(OC₆H₅)₃ + 3 HCl

Safety considerations

Triphenylphosphate exhibits low acute toxicity by dermal or oral contact.^[1]

^ ^a ^b J. Svara, N. Weferling, T. Hofmann "Phosphorus Compounds, Organic" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim, 2006. doi:10.1002/14356007.a19_545.pub2