Description

(4-Chloro-Phenyl)-Phosphonic Acid Diethyl Ester is a versatile organophosphorus compound that serves as a critical intermediate in advanced chemical synthesis. Its value lies in its ability to introduce both phosphonate and chlorophenyl functional groups, enabling the construction of complex molecules with tailored properties. This product is essential for researchers and manufacturers in the agrochemical and pharmaceutical industries, where it is used to develop novel active ingredients and fine chemicals.

Application

• Agrochemical Intermediate: A key building block for the synthesis of modern herbicides, insecticides, and plant growth regulators.
• Pharmaceutical Synthesis: Used in the research and development of active pharmaceutical ingredients (APIs), particularly those requiring phosphonate or aryl chloride motifs.
• Ligand and Catalyst Preparation: Serves as a precursor for phosphonate-based ligands used in metal catalysis and coordination chemistry.
• Flame Retardant & Polymer Additive Research: Investigated as a component or intermediate in the development of flame-retardant materials and polymer modifiers.
• Material Science: Employed in the surface modification of materials and the creation of functionalized organic-inorganic hybrids.
• Organic Synthesis Reagent: Utilized in Horner-Wadsworth-Emmons (HWE) olefination reactions and other carbon-carbon bond-forming processes.

Basic Information

Product Name	(4-Chloro-Phenyl)-Phosphonic Acid Diethyl Ester
CAS No.	2373-43-5
Molecular Formula	C10H14ClO3P
Molecular Weight	248.64 g/mol
Synonyms	Diethyl (4-Chlorophenyl)phosphonate; Diethyl P-(4-Chlorophenyl)phosphonate; (4-Chlorophenyl)phosphonic Acid Diethyl Ester; Phosphonic Acid, P-(4-Chlorophenyl)-, Diethyl Ester; Diethyl 4-Chlorobenzene Phosphonate; 4-Chlorophenylphosphonic Acid Diethyl Ester; Diethyl 4-Chlorophenylphosphonate; EINECS 219-148-7
EINECS	219-148-7

Quality Control

Our (4-Chloro-Phenyl)-Phosphonic Acid Diethyl Ester is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with each shipment to guarantee it meets your specific research or production requirements.

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 bases and incompatible materials such as strong oxidizing agents. The container should be kept tightly sealed to prevent moisture absorption.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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