Description

Diphenyl Methylphosphonate is an organophosphorus compound with the CAS registry number 7526-26-3, serving as a versatile chemical intermediate and reagent. This compound is valued for its role in synthesizing more complex phosphorus-containing molecules, including flame retardants, plasticizers, and ligands for metal catalysis. It is particularly relevant for R&D laboratories and industrial manufacturers in the agrochemical, pharmaceutical, and specialty polymer sectors seeking reliable, high-purity building blocks.

Application

• Chemical Synthesis Intermediate: A key precursor in the production of organophosphate esters, phosphonates, and phosphine ligands.
• Flame Retardant Formulation: Used in the development and manufacturing of flame-retardant additives for plastics, textiles, and coatings.
• Agrochemical Production: Serves as a building block for certain pesticides and herbicides that contain phosphonate functional groups.
• Pharmaceutical Research: Employed as a reagent in medicinal chemistry for the synthesis of potential drug candidates with phosphorus-based pharmacophores.
• Polymer Modification: Acts as a monomer or additive to impart specific properties like improved thermal stability or adhesion in specialty polymers.
• Catalyst and Ligand Preparation: Useful in the synthesis of metal-complexing ligands for homogeneous catalysis applications.
• Laboratory Reagent: Utilized in academic and industrial R&D for various phosphorylation and transesterification reactions.

Basic Information

Product Name	Diphenyl Methylphosphonate
CAS No.	7526-26-3
Molecular Formula	C13H13O3P
Molecular Weight	248.21 g/mol
Synonyms	Methyl diphenyl phosphonate; Diphenyl methyl phosphonate; Methyl diphenylphosphonate; Diphenyl methanephosphonate; Phenyl methyl phosphonate; Phosphonic acid, methyl-, diphenyl ester; Methyldiphenoxyphosphine oxide; NSC 404122
EINECS	231-386-8

Quality Control

Our Diphenyl Methylphosphonate is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including assay, identity confirmation, and impurity profiling, to ensure it meets precise customer specifications and industry standards. A Certificate of Analysis (COA) documenting purity, physical properties, and test results is provided with every shipment to guarantee traceability and consistency.

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. For long-term storage, consider under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.555 - 1.560
Density (20°C)	1.18 - 1.22 g/mL

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