Description

Ethylphosphonic Acid Methylethyl Ester is a versatile organophosphorus compound with significant utility as a key chemical intermediate. Its value lies in its ability to act as a crucial building block for synthesizing more complex molecules, particularly in advanced material and agrochemical research. This product is essential for R&D chemists and process engineers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop novel active ingredients or functional materials.

Application

• Agrochemical Intermediate: A critical precursor in the synthesis of novel herbicides, insecticides, and plant growth regulators.
• Pharmaceutical Building Block: Used in medicinal chemistry for the research and development of new drug candidates, particularly those requiring phosphonate or phosphate ester functionalities.
• Ligand and Catalyst Synthesis: Serves as a starting material for creating specialized ligands used in metal catalysis and coordination chemistry.
• Flame Retardant Formulations: Incorporated as a reactive component in the development of flame-retardant polymers and additives.
• Material Science Research: Employed in the synthesis of organophosphorus monomers for specialty polymers, coatings, and electronic materials.
• Chemical Synthesis Reagent: Utilized in organic synthesis for introducing the ethylphosphonate group into target molecules.

Basic Information

Product Name	Ethylphosphonic Acid Methylethyl Ester
CAS No.	5301-65-5
Molecular Formula	C5H13O3P
Molecular Weight	152.13 g/mol
Synonyms	Methyl ethyl ethylphosphonate; Ethylphosphonic acid methyl ethyl ester; Ethyl methyl ethylphosphonate; Ethyl (methoxyethoxy)phosphinate; (Methoxyethoxy)(ethyl)phosphine oxide; Diethyl methylphosphonate (Isomer); Ethyl methylphosphonate ethyl ester; O-Methyl O-ethyl ethylphosphonate
EINECS	226-149-7

Quality Control

Every batch of Ethylphosphonic Acid Methylethyl Ester is produced and tested under a stringent quality management system. We ensure compliance with relevant industry standards and provide full traceability. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is available for each shipment upon request, guaranteeing consistency and reliability for your critical processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic and easily oxidized nature, it is recommended to store the material under an inert atmosphere (e.g., nitrogen or argon) and handle it in a moisture-controlled environment to maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Density (at 20°C)	~1.05 g/cm³
Refractive Index (n20D)	~1.420 - 1.430

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.