Diethyl (ethylthiomethyl)phosphonate

(乙硫基甲基)膦酸二乙酯

Also known as: 1-(ethoxy-(ethylsulfanylmethyl)phosphoryl)oxyethane, 1-[ethoxy(ethylsulfanylmethyl)phosphoryl]oxyethane, DIETHYL (ETHYLTHIOMETHYL)PHOSPHONATE, DIETHYL ETHYLTHIOMETHANEPHOSPHONATE, Diethyl (ethylthiomethyl)phosphonate 97%, EINECS 258-971-3, Ethylthiomethylphosphonic acid diethyl ester, MFCD00009269, NSC 140826, Phosphonic acid, P-[(ethylthio)methyl]-, diethyl ester, [(Ethylthio)methyl]phosphonic acid diethyl ester

Diethyl (ethylthiomethyl)phosphonate (CAS 54091-78-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H17O3PS and a molecular weight of 212.24700 g/mol. It is also known as 1-(ethoxy-(ethylsulfanylmethyl)phosphoryl)oxyethane, 1-[ethoxy(ethylsulfanylmethyl)phosphoryl]oxyethane and DIETHYL (ETHYLTHIOMETHYL)PHOSPHONATE. Key properties include a boiling point of 271.5ºC at 760mmHg, a density of 1.088g/cm3 and a flash point of 118ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
54091-78-0
Jingsj CID
J-15333-5
Molecular Formula
C7H17O3PS
Chinese Name
(乙硫基甲基)膦酸二乙酯
Molecular Weight
212.24700 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point271.5ºC at 760mmHg
Density1.088g/cm3
Flash Point118ºC

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of Diethyl (ethylthiomethyl)phosphonate?

The CAS number of Diethyl (ethylthiomethyl)phosphonate is 54091-78-0.

What are the molecular formula and molecular weight of Diethyl (ethylthiomethyl)phosphonate?

Diethyl (ethylthiomethyl)phosphonate has molecular formula C7H17O3PS and molecular weight 212.24700 g/mol.

Is Diethyl (ethylthiomethyl)phosphonate hazardous?

Diethyl (ethylthiomethyl)phosphonate has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "Diethyl (ethylthiomethyl)phosphonate (CAS 54091-78-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-15333-5 (accessed 2026-10-24).

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