(4-bromophenyl)diphenylphosphine oxide

(4-溴苯基)二苯基氧化磷

Also known as: (4-bromophenyl)diphenylphosphine oxide, (p-Bromophenyl)diphenylphosphine oxide, (4-bromophenyl)diphenylphosphane oxide, Phosphine oxide, (4-bromophenyl)diphenyl-, Phosphorane, (4-bromophenyl)diphenyl-, oxide

(4-bromophenyl)diphenylphosphine oxide (CAS 5525-40-6) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C18H14BrOP and a molecular weight of 357.181 g/mol. It is also known as (p-Bromophenyl)diphenylphosphine oxide, (4-bromophenyl)diphenylphosphane oxide and Phosphine oxide, (4-bromophenyl)diphenyl-. Key properties include a boiling point of 497.8±37.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 254.9±26.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 5525-40-6
Jingsj CID: J-1057189-1
Molecular Formula: C₁₈H₁₄BrOP
Chinese Name: (4-溴苯基)二苯基氧化磷
Molecular Weight: 357.181 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	497.8±37.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	254.9±26.5 °C

Frequently Asked Questions

What is the CAS number of (4-bromophenyl)diphenylphosphine oxide?

The CAS number of (4-bromophenyl)diphenylphosphine oxide is 5525-40-6.

What are the molecular formula and molecular weight of (4-bromophenyl)diphenylphosphine oxide?

(4-bromophenyl)diphenylphosphine oxide has molecular formula C18H14BrOP and molecular weight 357.181 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. "(4-bromophenyl)diphenylphosphine oxide (CAS 5525-40-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1057189-1 (accessed 2026-10-26).

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