Description

Diphenyl Phosphate is an organophosphorus compound widely utilized as a versatile intermediate and additive in advanced material synthesis. Its significance lies in its role as a key building block for flame retardants, plasticizers, and specialized polymers, offering enhanced performance characteristics. This product is essential for manufacturers in the plastics, electronics, and specialty chemical industries seeking to improve material safety and functionality.

Application

• Flame Retardant Intermediate: A critical precursor in the synthesis of high-efficiency, halogen-free flame retardants for engineering plastics and epoxy resins.
• Plasticizer and Stabilizer: Used as a component in plasticizer formulations to enhance flexibility and thermal stability of PVC and other polymers.
• Pharmaceutical & Agrochemical Synthesis: Serves as a phosphorylating agent and intermediate in the manufacture of active pharmaceutical ingredients (APIs) and agrochemicals.
• Lubricant & Hydraulic Fluid Additive: Imparts anti-wear and extreme pressure properties to synthetic lubricants and industrial hydraulic fluids.
• Catalyst and Reaction Modifier: Employed as a catalyst or co-catalyst in esterification and polymerization reactions.
• Electrolyte Additive for Lithium-ion Batteries: Used in small quantities to improve the thermal stability and cycle life of battery electrolytes.

Basic Information

Product Name	Diphenyl Phosphate
CAS No.	838-85-7
Molecular Formula	C12H11O4P
Molecular Weight	250.19 g/mol
Synonyms	Diphenyl hydrogen phosphate; Phenyl phosphate; Phosphoric acid diphenyl ester; DPP; Diphenyl acid phosphate; Diphenyl phosphoric acid; Phenyl acid phosphate; O,O-Diphenyl phosphate
EINECS	212-657-9

Quality Control

Our Diphenyl Phosphate is manufactured under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including assay, purity, and impurity profile determination, to ensure it meets exacting specifications for industrial and specialty applications. Certificates of Analysis (COA) documenting these results are provided to guarantee supply consistency and traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Recommended storage temperature is between 15°C and 25°C. Keep container tightly sealed when not in use to minimize moisture absorption.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Free Phenol Content	≤ 1.0%
Acidity (as H3PO4)	≤ 0.5%

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