Description

Phenylphosphonic Acid Dimethyl Ester is a versatile organophosphorus compound that serves as a critical intermediate and reagent in advanced chemical synthesis. Its value lies in its ability to act as a phosphorylating agent and a key building block for more complex phosphorus-containing molecules. This product is essential for research and production in the pharmaceutical, agrochemical, and specialty materials industries, where precise chemical functionality is required.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those with phosphonate or phosphate ester functionalities.
• Agrochemical Synthesis: Used in the production of herbicides, insecticides, and plant growth regulators that incorporate organophosphorus chemistry.
• Ligand and Catalyst Precursor: Serves as a starting material for the preparation of specialized phosphine ligands used in homogeneous catalysis and cross-coupling reactions.
• Flame Retardant Additive: Acts as a reactive intermediate in the manufacture of organophosphorus flame retardants for polymers and textiles.
• Polymer Modification: Employed as a monomer or cross-linking agent in the synthesis of specialty polymers with enhanced properties.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new synthetic pathways and material science applications.

Basic Information

Product Name	Phenylphosphonic Acid Dimethyl Ester
CAS No.	2240-41-7
Molecular Formula	C8H11O3P
Molecular Weight	186.14 g/mol
Synonyms	Dimethyl Phenylphosphonate; Phenylphosphonic Acid Dimethyl Ester; Dimethyl Phenylphosphonite; Phenylphosphonic Acid, Dimethyl Ester; Phosphonic Acid, Phenyl-, Dimethyl Ester; NSC 404058; Dimethoxy(phenyl)phosphine Oxide
EINECS	218-806-7

Quality Control

Our Phenylphosphonic Acid Dimethyl Ester is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including GC, HPLC, and NMR, to ensure identity, purity, and consistency. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming compliance with agreed specifications. We support our global clients with documentation relevant to REACH and other regulatory frameworks.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and strong bases. The product is moisture-sensitive; ensure containers are kept tightly sealed when not in use.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.515 - 1.525
Density (20°C)	1.18 - 1.22 g/cm³

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