Diethyl (3-methylbenzyl)phosphonate

(3-甲基苄基)膦酸二乙酯

Also known as: (3-Methylbenzyl)phosphonic acid diethyl ester, 3-(Diethylphosphonomethyl)toluene, 1-(Diethoxyphosphorylmethyl)-3-methylbenzene, Diethyl (3-methylbenzyl)phosphonate, Phosphonic acid, P-[(3-methylphenyl)methyl]-, diethyl ester

Diethyl (3-methylbenzyl)phosphonate (CAS 63909-50-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H19O3P and a molecular weight of 242.25100 g/mol. It is also known as (3-Methylbenzyl)phosphonic acid diethyl ester, 3-(Diethylphosphonomethyl)toluene and 1-(Diethoxyphosphorylmethyl)-3-methylbenzene. Key properties include a boiling point of 340.687ºC at 760 mmHg, a density of 1.077g/cm3 and a flash point of 173.569ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
63909-50-2
Jingsj CID
J-46203-5
Molecular Formula
C12H19O3P
Chinese Name
(3-甲基苄基)膦酸二乙酯
Molecular Weight
242.25100 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point340.687ºC at 760 mmHg
Density1.077g/cm3
Flash Point173.569ºC

Frequently Asked Questions

What is the CAS number of Diethyl (3-methylbenzyl)phosphonate?

The CAS number of Diethyl (3-methylbenzyl)phosphonate is 63909-50-2.

What are the molecular formula and molecular weight of Diethyl (3-methylbenzyl)phosphonate?

Diethyl (3-methylbenzyl)phosphonate has molecular formula C12H19O3P and molecular weight 242.25100 g/mol.

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

Last updated:

How to cite: Jingsj. "Diethyl (3-methylbenzyl)phosphonate (CAS 63909-50-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-46203-5 (accessed 2026-10-24).

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