Description

4-Biphenylol Diphenyl Phosphate is an organophosphate compound widely utilized as a flame retardant and plasticizer. This product is valued for its ability to enhance fire safety while maintaining the physical properties of polymer materials. It is primarily needed by manufacturers in the plastics, electronics, and construction industries seeking effective flame-retardant additives for high-performance applications.

Application

• As a flame retardant additive in engineering plastics such as polycarbonate (PC), polyphenylene oxide (PPO), and their blends.
• As a plasticizer and flame retardant in PVC (polyvinyl chloride) wire and cable insulation and sheathing.
• In the formulation of fire-resistant coatings and adhesives for construction and automotive components.
• As a synergistic agent in halogen-free flame-retardant systems for electronic housings and connectors.
• For the production of flame-retardant polyurethane foams used in insulation and furniture.
• In the manufacturing of safety-critical components for the transportation and aerospace industries.

Basic Information

Product Name	4-Biphenylol Diphenyl Phosphate
CAS No.	17269-99-7
Molecular Formula	C24H19O4P
Molecular Weight	402.38 g/mol
Synonyms	Biphenyl-4-yl diphenyl phosphate; 4-Hydroxybiphenyl diphenyl phosphate; Phenol, 4-biphenylyl, diphenyl phosphate; Diphenyl 4-phenylphenyl phosphate; FR-4BDP; BDP; 4-Biphenylyl diphenyl phosphate; Phenylbiphenyl-4-yl diphenyl phosphate
EINECS	Contact for details

Quality Control

Our 4-Biphenylol Diphenyl Phosphate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency and compliance with industry specifications for flame retardant applications. Certificates of Analysis (COA) detailing purity, identity, and key physical properties are available upon request.

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. This material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	White to off-white crystalline powder or flakes
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	90 - 110 °C
Phosphorus Content	Contact for details
Acidity (as H3PO4)	≤ 0.1%
Loss on Drying	≤ 0.5%

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