Description

Diphenyl Phenylphosphonate is a high-purity organophosphorus compound widely used as a key intermediate and reagent in advanced chemical synthesis. Its primary value lies in its role as a versatile phosphorylating agent and a building block for more complex phosphorus-containing molecules. This product is essential for R&D and production in the pharmaceutical, agrochemical, and specialty polymer industries, where precise chemical functionality is required.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs), particularly those containing phosphorus-based functional groups.
• Agrochemical Synthesis: Serves as a precursor for herbicides, insecticides, and plant growth regulators.
• Flame Retardant Precursor: A key monomer or additive intermediate in the production of flame-retardant materials and polymers.
• Ligand and Catalyst Preparation: Employed in the development of organometallic catalysts and ligands for various chemical transformations.
• Polymer Modification: Used to introduce phosphate ester groups into polymer chains to alter properties like adhesion, solubility, or flame resistance.
• Research & Development: A valuable reagent in academic and industrial laboratories for exploring new organophosphorus chemistry.

Basic Information

Product Name	Diphenyl Phenylphosphonate
CAS No.	3049-24-9
Molecular Formula	C18H15O3P
Molecular Weight	310.28 g/mol
Synonyms	Phenyl Diphenylphosphonate; Diphenyl Phenyl Phosphonate; Phenylphosphonic Acid Diphenyl Ester; Phenyl Phosphorodiphenolate; Phosphonic Acid, Phenyl-, Diphenyl Ester; NSC 404122; Diphenoxy(phenyl)phosphine Oxide
EINECS	221-265-5

Quality Control

Our Diphenyl Phenylphosphonate is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including chromatography and spectroscopy, to confirm identity and purity. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance protocols.

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 quality.

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)	1.580 - 1.590
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.