Description

Diphenylphosphinic Anhydride is a versatile organophosphorus compound primarily used as a key intermediate in the synthesis of advanced materials and specialty chemicals. Its value lies in its ability to act as a robust phosphorylating and coupling agent, facilitating the creation of complex molecular architectures. This product is essential for R&D and production teams in the pharmaceutical, agrochemical, and polymer industries, where it is employed to develop novel active ingredients and high-performance additives.

Application

• Pharmaceutical Intermediate: A crucial building block for synthesizing novel drug candidates, particularly those targeting the central nervous system or possessing antiviral properties.
• Ligand Precursor in Catalysis: Used to manufacture specialized phosphine oxide ligands for transition metal-catalyzed cross-coupling reactions (e.g., Suzuki, Heck).
• Flame Retardant Synthon: Serves as a key intermediate in the production of high-efficiency, halogen-free flame retardants for engineering plastics and resins.
• Polymer Modification Agent: Imparts enhanced thermal stability and specific functional groups to polymers through copolymerization or grafting reactions.
• Agrochemical Synthesis: Employed in the creation of advanced herbicides, insecticides, and plant growth regulators.
• Electronic Chemicals: Used in the synthesis of precursors for organic light-emitting diodes (OLEDs) and other electronic materials.

Basic Information

Product Name	Diphenylphosphinic Anhydride
CAS No.	5849-36-5
Molecular Formula	C24H20O3P2
Molecular Weight	418.36 g/mol
Synonyms	Diphenylphosphinic Acid Anhydride; DPPA; Bis(diphenylphosphinyl) Oxide; P,P,P',P'-Tetraphenyl Diphosphonic Anhydride; Oxobis(diphenylphosphine) Oxide; Diphenylphosphinyl Oxide; (Diphenylphosphoryl)phosphonic Acid Diphenyl Ester
EINECS	227-457-8

Quality Control

Our Diphenylphosphinic Anhydride is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee compliance with your specific research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	158 - 162 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm

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