Ethyl hydrogen phosphonate

乙膦酸

Also known as: Brn 0969557, Ethyl hydrogen phosphonate (9CI), Ethyl phosphite, Ethyl phosphonate, Fosetyl, Fosetyl [ISO], Fosetyl-l, Monoethyl phosphonate, Monoethyl phosphite, Phosphonic acid ethyl ester, Phosphonic acid hydrogene ethyl ester, Phosphonic acid monoethyl ester, TL 463, ethoxy-hydroxy-oxophosphanium, ethyl H-phosphonate monoester, ethyl H-phosphonic acid, phosethyl, phosphonic acid ethyl ester

Ethyl hydrogen phosphonate (CAS 15845-66-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C2H7O3P and a molecular weight of 110.04900 g/mol. It is also known as Brn 0969557, Ethyl hydrogen phosphonate (9CI) and Ethyl phosphite. Key properties include a boiling point of 176ºC at 760mmHg and a flash point of 60.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
15845-66-6
Jingsj CID
J-1334722-2
Molecular Formula
C2H7O3P
Chinese Name
乙膦酸
Molecular Weight
110.04900 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point176ºC at 760mmHg
Flash Point60.3ºC

Frequently Asked Questions

What is the CAS number of Ethyl hydrogen phosphonate?

The CAS number of Ethyl hydrogen phosphonate is 15845-66-6.

What are the molecular formula and molecular weight of Ethyl hydrogen phosphonate?

Ethyl hydrogen phosphonate has molecular formula C2H7O3P and molecular weight 110.04900 g/mol.

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

Last updated:

How to cite: Jingsj. "Ethyl hydrogen phosphonate (CAS 15845-66-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1334722-2 (accessed 2026-10-23).

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