Triethyl phosphate

{{chembox

| Name = Triethyl phosphate

| Reference={{cite web|title=Zhangjiagang Shunchang Chemical Co., Ltd|work=Triethylphosphate|url=http://www.shunchangchem.com/template/produe90.htm|accessdate=June 13, 2009|url-status=dead|archiveurl=https://web.archive.org/web/20041217051620/http://www.shunchangchem.com/template/produe90.htm|archivedate=December 17, 2004}}

| ImageFile_Ref = {{chemboximage|correct|??}}

| ImageFile = Triethyl phosphate.png

| ImageSize = 180px

| ImageAlt = Skeletal formula of triethyl phosphate

| ImageFile1 = Triethyl-phosphate-3D-balls.png

| ImageSize1 = 180px

| ImageAlt1 = Ball-and-stick model of triethyl phosphate

| PIN = Triethyl phosphate

| OtherNames = Phosphoric acid triethyl ester
Phosphoric ester (archaic)
Flame retardant TEP{{cite web|url=https://pubchem.ncbi.nih.gov/compound/6535|title=Triethyl phosphate|access-date=2022-12-02|website=pubchem.ncbi.nih.gov}}
Tris(ethyl) phosphate
Triethoxyphosphine oxide
Ethyl phosphate (neutral)

|Section1={{Chembox Identifiers

| Abbreviations = TEP, Et₃PO₄

| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}

| ChemSpiderID = 6287

| InChI = 1/C6H15O4P/c1-4-8-11(7,9-5-2)10-6-3/h4-6H2,1-3H3

| InChIKey = DQWPFSLDHJDLRL-UHFFFAOYAA

| StdInChI_Ref = {{stdinchicite|correct|chemspider}}

| StdInChI = 1S/C6H15O4P/c1-4-8-11(7,9-5-2)10-6-3/h4-6H2,1-3H3

| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}

| StdInChIKey = DQWPFSLDHJDLRL-UHFFFAOYSA-N

| CASNo = 78-40-0

| CASNo_Ref = {{cascite|correct|CAS}}

| UNII_Ref = {{fdacite|correct|FDA}}

| UNII = QIH4K96K7J

| PubChem = 6535

| DrugBank_Ref = {{drugbankcite|correct|drugbank}}

| DrugBank = DB03347

| ChEBI_Ref = {{ebicite|correct|EBI}}

| ChEBI = 45927

| SMILES = O=P(OCC)(OCC)OCC

}}

|Section2={{Chembox Properties

| Formula = C₆H₁₅O₄P

| MolarMass = 182.15 g/mol

| Density = 1.072 g/cm³

| MeltingPtC =-56.5

| BoilingPtC = 215

| Solubility = Miscible

| MagSus = −125.3·10⁻⁶ cm³/mol

}}

|Section3={{Chembox Hazards

| MainHazards =

| NFPA-H = 2

| NFPA-F = 1

| NFPA-R = 0

| NFPA-S =

| FlashPtC = 107

| ExternalSDS = https://assets.thermofisher.com/DirectWebViewer/private/document.aspx?prd=ALFAA40001~~PDF~~MTR~~AGHS~~EN~~2024-03-27%2004:53:15~~Triethyl%20phosphate~~

}}

}}

Triethyl phosphate is an organic chemical compound with the formula (C₂H₅)₃PO₄ or OP(OEt)₃. It is a colorless liquid. It is the triester of ethanol and 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.[http://www.inchem.org/documents/sids/sids/78400.pdf Triethylphosphate], International Programme on Chemical Safety