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Phosphonic acid, P-[(4-ethenylphenyl)methyl]-, diethyl ester

Also known as: diethyl 4-vinylbenzylphosphonate, Diethyl (p-Vinylbenzyl)phosphonate, 4-Vinylbenzylphosphonic acid diethyl ester, Phosphonic acid, [(4-ethenylphenyl)methyl]-, diethyl ester, 1-(diethoxyphosphorylmethyl)-4-ethenylbenzene, diethyl p-vinylbenzylphosphonate, ethyl 4-phosphonatomethylstyrene

Phosphonic acid, P-[(4-ethenylphenyl)methyl]-, diethyl ester (CAS 726-61-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C13H19O3P and a molecular weight of 254.262 g/mol. Key properties include a boiling point of 364.2±21.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 187.7±42.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
726-61-4
Jingsj CID
J-1357978-7
Molecular Formula
C13H19O3P
Molecular Weight
254.262 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point364.2±21.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point187.7±42.4 °C
Exact Mass254.107178
PSA45.34000
LogP2.54
Vapor Pressure0.0±0.8 mmHg at 25°C
Refractive Index1.517

Frequently Asked Questions

What is the CAS number of Phosphonic acid, P-[(4-ethenylphenyl)methyl]-, diethyl ester?

The CAS number of Phosphonic acid, P-[(4-ethenylphenyl)methyl]-, diethyl ester is 726-61-4.

What are the molecular formula and molecular weight of Phosphonic acid, P-[(4-ethenylphenyl)methyl]-, diethyl ester?

Phosphonic acid, P-[(4-ethenylphenyl)methyl]-, diethyl ester has molecular formula C13H19O3P and molecular weight 254.262 g/mol.

What are the upstream and downstream products of Phosphonic acid, P-[(4-ethenylphenyl)methyl]-, diethyl ester?

For Phosphonic acid, P-[(4-ethenylphenyl)methyl]-, diethyl ester, Upstream Products: Diethyl (4-bromobenzyl)phosphonate, 4-Vinylbenzyl chloride, Triethyl phosphite.

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

Last updated:

How to cite: Jingsj. "Phosphonic acid, P-[(4-ethenylphenyl)methyl]-, diethyl ester (CAS 726-61-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1357978-7 (accessed 2026-11-09).

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