Trioctylphosphine oxide

三正辛基氧膦

Also known as: Trioctylphosphane oxide, Tri-n-octylphosphine oxide, Tri-n-octylphosphinoxide, TOPO, CYANEX 921, HISHICOLIN PO-8, 1-dioctylphosphoryloctane, Phosphine oxide, trioctyl-, Phosphorane, trioctyl-, oxide

Trioctylphosphine oxide (CAS 78-50-2) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C24H51OP and a molecular weight of 386.635 g/mol. It is also known as Trioctylphosphane oxide, Tri-n-octylphosphine oxide and Tri-n-octylphosphinoxide. Key properties include a melting point of 50-52 °C(lit.), a boiling point of 408.8±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 259.8±21.5 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

78-50-2

Jingsj CID

J-1991787-2

Molecular Formula

C₂₄H₅₁OP

Chinese Name

三正辛基氧膦

Molecular Weight

386.635 g/mol

Category

Organic Compounds

Last updated

8/21/2026