Triphenyl phosphate
Names | |
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IUPAC name
Triphenyl phosphate | |
Identifiers | |
115-86-6 | |
ChEBI | CHEBI:35033 |
ChEMBL | ChEMBL454511 |
ChemSpider | 7988 |
Jmol interactive 3D | Image |
PubChem | 8289 |
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Properties | |
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). | |
verify (what is ?) | |
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 2 3 4 5 "NIOSH Pocket Guide to Chemical Hazards #0644". National Institute for Occupational Safety and Health (NIOSH).
- ↑ "Triphenyl phosphate". Immediately Dangerous to Life and Health. National Institute for Occupational Safety and Health (NIOSH).
- 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
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