Bis(4-methylphenyl)phosphine oxide

Also known as: Bis(p-tolyl)phosphine oxide, Di(p-tolyl)phosphine oxide, Di-p-tolylphosphine oxide, bis(4-methylphenyl)-oxophosphanium

Bis(4-methylphenyl)phosphine oxide (CAS 2409-61-2) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C14H14OP and a molecular weight of 230.242 g/mol. Key properties include a melting point of 96°C(lit.), a boiling point of 354.2±45.0 °C at 760 mmHg and a flash point of 168.0±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.: 2409-61-2
Jingsj CID: J-1112153-2
Molecular Formula: C₁₄H₁₄OP
Molecular Weight: 230.242 g/mol
Category: Solvents
Last updated: 11/2/2026

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Physicochemical Properties

Melting Point	96°C(lit.)
Boiling Point	354.2±45.0 °C at 760 mmHg
Flash Point	168.0±28.7 °C
Exact Mass	230.086044
PSA	40.54000
LogP	2.21
Vapor Pressure	0.0±0.8 mmHg at 25°C
Additional Property	Slightly soluble in water.

Customs & Trade Information

HS Code	2902909090
Summary	2902909090 other aromatic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Bis(4-methylphenyl)phosphine oxide?

The CAS number of Bis(4-methylphenyl)phosphine oxide is 2409-61-2.

What are the molecular formula and molecular weight of Bis(4-methylphenyl)phosphine oxide?

Bis(4-methylphenyl)phosphine oxide has molecular formula C14H14OP and molecular weight 230.242 g/mol.

What are the upstream and downstream products of Bis(4-methylphenyl)phosphine oxide?

For Bis(4-methylphenyl)phosphine oxide, Upstream Products: Diethyl phosphite, p-Tolylmagnesium bromide, Bis(4-methylphenyl)phosphine; Downstream Products: Bis(4-methylphenyl)phosphine, Chlorodi(p-tolyl)phosphine.

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

Last updated: 11/2/2026

How to cite: Jingsj. "Bis(4-methylphenyl)phosphine oxide (CAS 2409-61-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1112153-2 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.