Description

Bisphenol A Diphosphate is a high-purity organophosphorus compound widely recognized for its role as a reactive flame retardant and a key intermediate in advanced polymer synthesis. Its primary commercial value lies in its ability to impart excellent flame retardancy to epoxy resins, polycarbonates, and other engineering thermoplastics without significantly compromising the mechanical properties of the final material. This makes it an essential component for manufacturers in the electronics, construction, and automotive industries seeking to meet stringent fire safety regulations while maintaining product performance.

Application

• Reactive Flame Retardant for Epoxy Resins: Incorporated into epoxy systems for printed circuit boards (PCBs), electrical laminates, and semiconductor encapsulants to achieve UL94 V-0 ratings.
• Polymer Additive for Engineering Plastics: Used as a co-monomer or additive in polycarbonate (PC) and polycarbonate/acrylonitrile butadiene styrene (PC/ABS) blends to enhance flame retardancy for electronic housings and automotive components.
• Synthesis of Phosphorus-Containing Polyols: Serves as a crucial building block for producing flame-retardant polyols used in rigid polyurethane (PU) and polyisocyanurate (PIR) foams for insulation.
• Specialty Adhesives and Coatings: Imparts fire resistance to high-performance adhesives, potting compounds, and protective coatings used in aerospace and military applications.
• Research & Development: Utilized in academic and industrial R&D for developing novel phosphorus-based flame retardants and functional polymers.

Basic Information

Product Name	Bisphenol A Diphosphate
CAS No.	181028-79-5
Molecular Formula	C21H24O8P2
Molecular Weight	466.36 g/mol
Synonyms	Bisphenol A bis(diphenyl phosphate); BDP; Bisphenol A bis(diphenyl phosphate) oligomer; Bisphenol A diphenyl phosphate; Tetraphenyl bisphenol A diphosphate; FR-BDP; Phosphoric acid, (1-methylethylidene)di-4,1-phenylene tetraphenyl ester; Bisphenol A tetraphenyl diphosphate
EINECS	Contact for details

Quality Control

Our Bisphenol A Diphosphate is manufactured under a strict quality management system to ensure batch-to-batch consistency and high performance. Each lot undergoes rigorous analytical testing, including assay by HPLC, determination of phosphorus content, and analysis of key impurities. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and safety data 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, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect product quality and performance.

Specification

Item	Specification
Appearance	White to off-white powder or flakes
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0 %
Phosphorus Content	12.5 - 13.5 %
Melting Point	95 - 115 °C
Volatiles (Loss on Drying)	≤ 0.5 %
Acidity (as H3PO4)	≤ 0.1 %

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