What is Triethyl phosphate?

Sep 6,2021

Triethyl phosphate is a 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".



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


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.



Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Wash away remainder with plenty of water.  


Separated from strong oxidants and strong bases. Well closed. Ventilation along the floor.     

  • Related articles
  • Related Qustion
See also

What is Dimethyl sulfate?

Dimethyl sulfate is a colorless oily liquid, odorless to a faint onion-like odor. It is very toxic by inhalation. It is a combustible liquid and has a flash point of 182°F. It is slightly soluble in water and decomposed by water to give sul....

Sep 6,2021Organic Chemistry

Ticagrelor-Acute myocardial infarction

Ticagrelor is a new type of oral antiplatelet drug of cyclopentyltriazole pyrimidine. It was launched in Europe in December 2010. It has been approved for marketing in 85 countries including the United States.....

Sep 6,2021API

Triethyl phosphate manufacturers

  • Triethyl phosphate
  • $10.00 / KG
  • 2021-11-29
  • CAS:78-40-0
  • Min. Order: 10g
  • Purity: 99
  • Supply Ability: 10 tons
  • Triethyl phosphate
  • $10.00 / KG/Tin
  • 2021-11-25
  • CAS:78-40-0
  • Min. Order: 1KG
  • Purity: 99%
  • Supply Ability: 5000tons per month
  • Triethyl phosphate
  • $0.00 / Kg/Bag
  • 2021-10-13
  • CAS:78-40-0
  • Min. Order: 1Kg/Bag
  • Purity: 99%
  • Supply Ability: 5000kg/month