Description

Phosphoric Acid, 4-(1-Methylethyl)Phenyl Diphenyl Ester is a specialized organophosphorus compound valued for its role as a high-performance additive and intermediate. Its chemical structure provides unique properties that enhance material performance and process stability in demanding industrial applications. This product is essential for manufacturers in the polymer, lubricant, and specialty chemical sectors seeking to improve product durability and functionality.

Application

• As a flame retardant plasticizer and stabilizer in PVC, polyurethane, and other polymer formulations.
• As a functional additive in high-temperature lubricants and hydraulic fluids to improve thermal stability and anti-wear properties.
• As a key chemical intermediate in the synthesis of more complex organophosphorus compounds for agrochemicals or pharmaceuticals.
• As a stabilizer and processing aid in the production of engineering plastics and synthetic rubbers.
• In specialty adhesive and sealant formulations requiring enhanced resistance to heat and environmental factors.
• Potential use as a solvent or extractant in specific metal separation and purification processes.

Basic Information

Product Name	Phosphoric Acid, 4-(1-Methylethyl)Phenyl Diphenyl Ester
CAS No.	55864-04-5
Molecular Formula	C21H21O4P
Molecular Weight	368.36 g/mol
Synonyms	Phosphoric Acid Isopropylphenyl Diphenyl Ester; Diphenyl 4-Isopropylphenyl Phosphate; 4-Isopropylphenyl Diphenyl Phosphate; Isopropylated Triphenyl Phosphate (ITP); Triphenyl Phosphate, Isopropylated; ITP Flame Retardant; SC-29; PX-40; CAS 55864-04-5
EINECS	Contact for details

Quality Control

Our production of Phosphoric Acid, 4-(1-Methylethyl)Phenyl Diphenyl Ester adheres to a stringent quality management system to ensure batch-to-batch consistency and reliability. Each lot is analyzed against comprehensive specifications, including identity, purity, and key physical-chemical parameters. A Certificate of Analysis (COA) documenting these results is provided with every shipment to support your quality assurance and regulatory compliance needs.

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 and contamination.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Acidity (as H3PO4)	≤ 0.1%
Water Content (KF)	≤ 0.1%
Refractive Index (20°C)	1.550 - 1.560
Density (20°C)	1.170 - 1.190 g/mL
Flash Point	> 200 °C

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