4,4'-(Phenylphosphoryl)dibenzoic acid

双(4-羧基苯基)苯基氧化膦

Also known as: Bis(4-carboxyphenyl)phenyl-phosphine oxide, 4,4'-(Phenylphosphinylidene)dibenzoic acid, 4,4'-Phenylphosphinylidenebis(benzoic acid), Phenylbis(4-carboxyphenyl)phosphine oxide, 4,4'-(Phenyloxophosphoranylidene)bisbenzoic acid, 4-[(4-carboxyphenyl)-phenylphosphoryl]benzoic acid, 4-[(4-carboxyphenyl)-phenylphosphoryl]benzoic acid, 4,4'-Phenylphosphonoyl-di-benzoesaeure, Benzoic acid, 4-[(4-carboxyphenyl)phenylphosphinyl]-

4,4'-(Phenylphosphoryl)dibenzoic acid (CAS 803-19-0) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C20H15O5P and a molecular weight of 366.304 g/mol. It is also known as Bis(4-carboxyphenyl)phenyl-phosphine oxide, 4,4'-(Phenylphosphinylidene)dibenzoic acid and 4,4'-Phenylphosphinylidenebis(benzoic acid). Key properties include a boiling point of 642.9±55.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 342.6±31.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

803-19-0

Jingsj CID

J-1164524-3

Molecular Formula

C₂₀H₁₅O₅P

Chinese Name

双(4-羧基苯基)苯基氧化膦

Molecular Weight

366.304 g/mol

Category

Aromatic Hydrocarbons

Last updated

8/21/2026