Methyl hydrogen methylphosphonate

甲基膦酸单甲酯

Also known as: Methanephosphonic acid monomethyl ester, Monomethyl methanephosphonate, Methyl phosphonic acid methyl ester, Hydrogen methyl methylphosphonate, Monomethyl methylphosphonate, Methyl methylphosphonic acid, Phosphonic acid, P-methyl-, monomethyl ester

Methyl hydrogen methylphosphonate (CAS 1066-53-1) 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 Methanephosphonic acid monomethyl ester, Monomethyl methanephosphonate and Methyl phosphonic acid methyl ester. Key properties include a boiling point of 159ºC at 760 mmHg, a density of 1.228g/cm3 and a flash point of 50ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1066-53-1
Jingsj CID
J-1415228-3
Molecular Formula
C2H7O3P
Chinese Name
甲基膦酸单甲酯
Molecular Weight
110.04900 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point159ºC at 760 mmHg
Density1.228g/cm3
Flash Point50ºC

Frequently Asked Questions

What is the CAS number of Methyl hydrogen methylphosphonate?

The CAS number of Methyl hydrogen methylphosphonate is 1066-53-1.

What are the molecular formula and molecular weight of Methyl hydrogen methylphosphonate?

Methyl hydrogen methylphosphonate 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. "Methyl hydrogen methylphosphonate (CAS 1066-53-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1415228-3 (accessed 2026-10-24).

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