Triphenyl phosphate

Triphenyl phosphate

Names
IUPAC name Triphenyl phosphate
Identifiers
CAS Number	115-86-6 Y
ChEBI	CHEBI:35033 Y
ChEMBL	ChEMBL454511 Y
ChemSpider	7988 Y
Jmol interactive 3D	Image
PubChem	8289
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
SMILES O=P(Oc1ccccc1)(Oc2ccccc2)Oc3ccccc3
Properties
Chemical formula	C18H15O4P
Molar mass	326.29 g·mol−1
Appearance	Colorless solid
Density	1.184 g/mL
Melting point	48 to 50 °C (118 to 122 °F; 321 to 323 K)
Boiling point	244 °C (471 °F; 517 K) at 10 mmHg
Vapor pressure	1 mmHg (193 °C)[1]
Hazards
Main hazards	Harmful
Flash point	220 °C (428 °F; 493 K)[1]
Lethal dose or concentration (LD, LC):
LD50 (Median dose)	1320 mg/kg (mouse, oral) 3500 mg/kg (rat, oral)[2]
US health exposure limits (NIOSH):
PEL (Permissible)	TWA 3 mg/m3[1]
REL (Recommended)	TWA 3 mg/m3[1]
IDLH (Immediate danger	1000 mg/m3[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y verify (what is YN ?)
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.^[3]

Triphenyl phosphate is prepared by the reaction of phosphorus oxychloride and phenol:

POCl₃ + 3 HOC₆H₅ → OP(OC₆H₅)₃ + 3 HCl

Safety considerations

Triphenyl phosphate exhibits low acute toxicity by dermal or oral contact.^[3]

References

1. 1 2 3 4 5 "NIOSH Pocket Guide to Chemical Hazards #0644". National Institute for Occupational Safety and Health (NIOSH). 
2. ↑ "Triphenyl phosphate". Immediately Dangerous to Life and Health. National Institute for Occupational Safety and Health (NIOSH). 
3. 1 2 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