Description

Bisphenol-A Bis(Diphenyl Phosphate) (CAS NO 5945-33-5) is a halogen-free, phosphorus-based flame retardant additive. It is valued for its high efficiency and compatibility in polymer systems, offering a more environmentally friendly alternative to traditional brominated compounds. This product is essential for manufacturers in the plastics, electronics, and construction industries seeking to enhance the fire safety of their materials while meeting stringent regulatory standards.

Application

• Primary flame retardant for engineering thermoplastics such as polycarbonate (PC), PC/ABS blends, and polyphenylene oxide (PPO).
• Additive for epoxy resins and unsaturated polyesters used in printed circuit boards (PCBs) and electronic encapsulants.
• Flame retardant component in wire and cable insulation coatings.
• Used in polyurethane foams for construction and automotive applications.
• Additive for adhesives and sealants requiring improved fire resistance.
• Flame retardant for synthetic textiles and fibers.

Basic Information

Product Name	Bisphenol-A Bis(Diphenyl Phosphate)
CAS No.	5945-33-5
Molecular Formula	C39H34O8P2
Molecular Weight	692.62 g/mol
Synonyms	Bisphenol A bis(diphenyl phosphate); BDP; Bisphenol A diphenyl phosphate; Bisphenol A bis(diphenyl phosphate) oligomer; FR-BDP; Phosphoric acid, (1-methylethylidene)di-4,1-phenylene tetraphenyl ester; Tetraphenyl (isopropylidenediphenyl) diphosphate; Bisphenol-A bis(diphenyl phosphate) flame retardant
EINECS	227-691-4

Quality Control

Our Bisphenol-A Bis(Diphenyl Phosphate) is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent purity, performance, and compliance with relevant industry specifications for flame retardant additives. A detailed Certificate of Analysis (COA) is provided with each shipment, documenting key parameters such as assay, phosphorus content, and acidity.

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). Keep away from heat, sparks, and open flame. The container should be kept tightly sealed when not in use to minimize moisture absorption.

Specification

Item	Specification
Appearance	White to off-white powder or flakes
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Phosphorus Content	8.8 - 9.2 %
Acidity (as H3PO4)	≤ 0.1 %
Melting Point	95 - 105 °C
Volatile Matter	≤ 0.5 %

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