Diphenyl(o-tolyl)phosphine

二苯基(o-甲苯基)膦

Also known as: (2-Methylphenyl)(diphenyl)phosphine, (2-methylphenyl)-diphenylphosphane, (o-Methylphenyl)diphenylphosphine, DIPHENYL(O-TOLYL)PHOSPHINE, DIPHENYL-2-TOLYLPHOSPHINE, Diphenyl 2-methylphenylphosphine, Diphenyl(2-methylphenyl)phosphine, Diphenyl(o-tolyl), EINECS 227-675-6, MFCD00008515, Phosphine, (2-methylphenyl)diphenyl-

Diphenyl(o-tolyl)phosphine (CAS 5931-53-3) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C19H17P and a molecular weight of 276.312 g/mol. It is also known as (2-Methylphenyl)(diphenyl)phosphine, (2-methylphenyl)-diphenylphosphane and (o-Methylphenyl)diphenylphosphine. Key properties include a melting point of 70-73ºC(lit.), a boiling point of 378.3±21.0 °C at 760 mmHg and a flash point of 192.2±28.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
5931-53-3
Jingsj CID
J-1087943-2
Molecular Formula
C19H17P
Chinese Name
二苯基(o-甲苯基)膦
Molecular Weight
276.312 g/mol
Category
Solvents
Last updated
8/21/2026

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Physicochemical Properties

Melting Point70-73ºC(lit.)
Boiling Point378.3±21.0 °C at 760 mmHg
Flash Point192.2±28.3 °C

Frequently Asked Questions

What is the CAS number of Diphenyl(o-tolyl)phosphine?

The CAS number of Diphenyl(o-tolyl)phosphine is 5931-53-3.

What are the molecular formula and molecular weight of Diphenyl(o-tolyl)phosphine?

Diphenyl(o-tolyl)phosphine has molecular formula C19H17P and molecular weight 276.312 g/mol.

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

Last updated:

How to cite: Jingsj. "Diphenyl(o-tolyl)phosphine (CAS 5931-53-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1087943-2 (accessed 2026-10-22).

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