2-(Triphenylphosphoranylidene)acetophenone

2-(三苯基亚正膦基)苯乙酮

Also known as: (Benzoylmethylene)triphenylphosphorane, 1-phenyl-2-(triphenylphosphoranylidene)-ethanon, 1-phenyl-2-(triphenylphosphoranylidene)ethanone, 2-(triphenylphosphoranylidene)-acetophenon, alpha-(Triphenylphosphoranylidene)acetophenone, phenacylidenetriphenylphosphorane, skf45359, EINECS 212-727-2, MFCD00014088

2-(Triphenylphosphoranylidene)acetophenone (CAS 859-65-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C26H21OP and a molecular weight of 380.41800 g/mol. It is also known as (Benzoylmethylene)triphenylphosphorane, 1-phenyl-2-(triphenylphosphoranylidene)-ethanon and 1-phenyl-2-(triphenylphosphoranylidene)ethanone. Key properties include a melting point of 183-186°C, a boiling point of 550.9ºC at 760 mmHg, a density of 1.18g/cm3 and a flash point of 287ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 859-65-4
Jingsj CID: J-32591-0
Molecular Formula: C₂₆H₂₁OP
Chinese Name: 2-(三苯基亚正膦基)苯乙酮
Molecular Weight: 380.41800 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	183-186°C
Boiling Point	550.9ºC at 760 mmHg
Density	1.18g/cm3
Flash Point	287ºC

Frequently Asked Questions

What is the CAS number of 2-(Triphenylphosphoranylidene)acetophenone?

The CAS number of 2-(Triphenylphosphoranylidene)acetophenone is 859-65-4.

What are the molecular formula and molecular weight of 2-(Triphenylphosphoranylidene)acetophenone?

2-(Triphenylphosphoranylidene)acetophenone has molecular formula C26H21OP and molecular weight 380.41800 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "2-(Triphenylphosphoranylidene)acetophenone (CAS 859-65-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-32591-0 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.