Purity 99% Diethyl Methylphosphonate CAS 683-08-9 Colorless liquid

Diethyl methylphosphonate (also known as diethyl methylphosphonate or abbreviated as MOP (Methyl-ortho-phosphoric diethylester)) has a molecular formula of C₅H₁₃O₃P, molecular weight of 152.13 g/mol, and EC number of 211-667-4.

Diethyl methylphosphonate is a colorless transparent liquid and an organophosphorus compound. It is soluble in various organic solvents such as alcohols and ethers.

Uses:

Organic synthesis intermediate: Diethyl methylphosphonate is used to prepare phosphorus-containing drugs (e.g., antibiotic synergists), pesticides (e.g., insecticide precursors), and functional materials (e.g., flame retardants).
Nerve agent simulant research: Due to its similar phosphonate structure and vapor pressure to nerve agents like Sarin, it is used to study the environmental behavior, detection methods, and protection technologies of toxic agents. It serves as a non-lethal simulant.
Solvents and extractants: Leveraging its polarity and stability, it is employed as a rare metal extractant or organic reaction solvent.

Method of Preparation:

Diethyl methylphosphonate can be prepared through the reaction of diethanol and trimethyl phosphate. The specific preparation method is as follows:
(CH3O)3PO + 2C2H5OH → (CH3O)2POOC2H5 + CH3OH.

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