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(Top) 1 Occurrence 2 Properties 3 Uses 4 Safety 5 References

Tris(2-ethylhexyl) phosphate

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Tris(2-ethylhexyl) phosphate
Identifiers

CAS Number	78-42-2
3D model (JSmol)	Interactive image
Abbreviations	TEHP
ChEBI	CHEBI:181994
ChEMBL	ChEMBL1562290
ChemSpider	6289
ECHA InfoCard	100.001.015
EC Number	201-116-6
PubChem CID	6537
RTECS number	MP0770000
UNII	BQC0BKB72S
CompTox Dashboard (EPA)	DTXSID0021414
InChI InChI=1S/C24H51O4P/c1-7-13-16-22(10-4)19-26-29(25,27-20-23(11-5)17-14-8-2)28-21-24(12-6)18-15-9-3/h22-24H,7-21H2,1-6H3 Key: GTVWRXDRKAHEAD-UHFFFAOYSA-N
SMILES CCCCC(CC)COP(=O)(OCC(CC)CCCC)OCC(CC)CCCC
Properties
Chemical formula	C₂₄H₅₁O₄P
Molar mass	434.642 g·mol⁻¹
Hazards
GHS labelling:.^[1]
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Tris(2-ethylhexyl)phosphate (TEHP^[2]) is an organic chemical compound in the organophosphate group. It is a triakylphosphate.

Occurrence[edit]

Since tris(2-ethylhexyl) phosphate is easily separated from polymers, it is often found in house dust^[3]

Tris(2-ethylhexyl) phosphate is a colourless, viscous liquid with a faint, piercing smell. It has a viscosity of 15 mPas at 20 °C.^[4]

Due to its properties (including that it is a mild biocide), tris(2-ethylhexyl)phosphate is used in a variety of applications:

as a plasticizer in polymers (PVC, PU, NBR and others) giving good cold flexibility and flame retarding properties
as a carrier for pigments and dyes used in colouring polymers
as a component in cutting fluid^[5]
as a component in release agents, used in the metal casting industry
as a solvent in hydrogen peroxide synthesis

When heated above its flash point of 170 °C, TEHP can release vapours capable of forming explosive mixtures with air.^[6]

Several studies concluded that TEHP has the highest bioaccumulation factor of all organophosphate flame retardants examined.^[7]

^ Bergman, Åke; Rydén, Andreas; Law, Robin J.; de Boer, Jacob; Covaci, Adrian; Alaee, Mehran; Birnbaum, Linda; Petreas, Myrto; Rose, Martin; Sakai, Shinichi; Van den Eede, Nele; van der Veen, Ike (November 2012). "A novel abbreviation standard for organobromine, organochlorine and organophosphorus flame retardants and some characteristics of the chemicals". Environment International. 49: 57–82. Bibcode:2012EnInt..49...57B. doi:10.1016/j.envint.2012.08.003. PMC 3483428. PMID 22982223.

^ PubChem. "Tris(2-ethylhexyl) phosphate". pubchem.ncbi.nlm.nih.gov. Retrieved 2023-07-05.

^ "TRIS(2-ETHYLHEXYL)PHOSPHATE (TEHP) |". atamankimya.com. Retrieved 2023-07-05.