Ethylphosphonic dichloride

二氯化乙基磷酸

Also known as: Ethanephosphonic dichloride, Dichloroethylphosphine Oxide, Ethylphosphonodichloridate, Phosphonic dichloride, P-ethyl-, 1-Dichlorophosphorylethane, ethyl phosphorus dichloride, AURORA KA-1351, MFCD00002073, EINECS 213-918-3

Ethylphosphonic dichloride (CAS 1066-50-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C2H5Cl2OP and a molecular weight of 146.94000 g/mol. It is also known as Ethanephosphonic dichloride, Dichloroethylphosphine Oxide and Ethylphosphonodichloridate. Key properties include a boiling point of 71-72 °C12 mm Hg(lit.), a density of 1.376 g/mL at 25 °C(lit.) and a flash point of >230 °F. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1066-50-8
Jingsj CID: J-8358-4
Molecular Formula: C₂H₅Cl₂OP
Chinese Name: 二氯化乙基磷酸
Molecular Weight: 146.94000 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	71-72 °C12 mm Hg(lit.)
Density	1.376 g/mL at 25 °C(lit.)
Flash Point	>230 °F

GHS Safety & Compliance

Corrosion / Acute ToxicitySignal word: Danger

Frequently Asked Questions

What is the CAS number of Ethylphosphonic dichloride?

The CAS number of Ethylphosphonic dichloride is 1066-50-8.

What are the molecular formula and molecular weight of Ethylphosphonic dichloride?

Ethylphosphonic dichloride has molecular formula C2H5Cl2OP and molecular weight 146.94000 g/mol.

Is Ethylphosphonic dichloride hazardous?

Ethylphosphonic dichloride has GHS signal word Danger.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Ethylphosphonic dichloride (CAS 1066-50-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8358-4 (accessed 2026-10-23).

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