Chemistry:Triethyl phosphate

Triethyl phosphate

Names
Preferred IUPAC name Triethyl phosphate
Other names Phosphoric acid triethyl ester Phosphoric ester (archaic) Flame retardant TEP Tris(ethyl) phosphate Triethoxyphosphine oxide Ethyl phosphate (neutral)
Identifiers
CAS Number	78-40-0 Y
3D model (JSmol)	Interactive image
Abbreviations	TEP
ChEBI	CHEBI:45927 Y
ChemSpider	6287 Y
DrugBank	DB03347 Y
PubChem CID	6535
UNII	QIH4K96K7J Y
InChI InChI=1S/C6H15O4P/c1-4-8-11(7,9-5-2)10-6-3/h4-6H2,1-3H3 Y Key: DQWPFSLDHJDLRL-UHFFFAOYSA-N Y InChI=1/C6H15O4P/c1-4-8-11(7,9-5-2)10-6-3/h4-6H2,1-3H3 Key: DQWPFSLDHJDLRL-UHFFFAOYAA
SMILES O=P(OCC)(OCC)OCC
Properties
Chemical formula	(CH 3CH 2) 3PO 4
Molar mass	182.156 g·mol−1
Appearance	colorless liquid
Density	1.072 g/cm3
Melting point	−56.5 °C (−69.7 °F; 216.7 K)
Boiling point	215 °C (419 °F; 488 K)
Solubility in water	Miscible
Magnetic susceptibility (χ)	−125.3·10−6 cm3/mol
Hazards
Safety data sheet
NFPA 704 (fire diamond)	1 2 0
Flash point	107 °C (225 °F; 380 K)
Related compounds
Related compounds	Trimethyl phosphate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Tracking categories (test):

• SizeSet

Triethyl phosphate is an organic chemical compound with the formula (CH
3CH
2)
3PO
4 or Et
3PO
4, where Et is ethyl. It is a colorless liquid. It is the triethyl ester of phosphoric acid and can be called "phosphoric acid, triethyl ester".

Its primary uses are as an industrial catalyst (in acetic anhydride synthesis), a polymer resin modifier, and a plasticizer (e.g. for unsaturated polyesters). In smaller scale it is used as a solvent for e.g. cellulose acetate, flame retardant, an intermediate for pesticides and other chemicals, stabilizer for peroxides, a strength agent for rubber and plastic including vinyl polymers and unsaturated polyesters, etc.

History

It was studied for the first time by French chemist Jean Louis Lassaigne in the early 19th century.

See also

• Franz Anton Voegeli