Description

Phosphoric Acid Diphenyl 2,4,6-Trimethylphenyl Ester is a specialized organophosphorus compound, primarily valued as a high-performance flame retardant and plasticizer additive. Its chemical structure provides excellent thermal stability and compatibility with various polymer matrices, making it a critical component for enhancing material safety and performance. This product is essential for manufacturers in the polymer, plastics, and specialty chemical industries seeking to improve the fire resistance and processing characteristics of their materials.

Application

• As a flame retardant and plasticizer in PVC, polyurethane foams, and other engineering plastics.
• As an additive in lubricants and hydraulic fluids to improve thermal and oxidative stability.
• As a synergistic agent in halogen-free flame retardant formulations for wires, cables, and electronic components.
• In the production of specialty polymers and resins requiring enhanced fire safety ratings.
• As a potential intermediate for the synthesis of other organophosphate esters with specific functional properties.
• In adhesive and sealant formulations to impart flame retardancy.

Basic Information

Product Name	Phosphoric Acid Diphenyl 2,4,6-Trimethylphenyl Ester
CAS No.	73179-43-8
Molecular Formula	C21H21O4P
Molecular Weight	368.36 g/mol
Synonyms	Diphenyl (2,4,6-trimethylphenyl) phosphate; 2,4,6-Trimethylphenyl diphenyl phosphate; Phosphoric acid, diphenyl 2,4,6-trimethylphenyl ester; Diphenyl cresyl phosphate (mixed isomer reference); TCPP analogue; Aryl phosphate ester flame retardant; Trimethylphenyl diphenyl phosphate
EINECS	Contact for details

Quality Control

Our Phosphoric Acid Diphenyl 2,4,6-Trimethylphenyl Ester is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure consistency, purity, and performance for its intended industrial applications. Certificates of Analysis (COA) documenting key parameters such as assay, identity, and impurity profiles are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from strong acids and organic solvents. Recommended storage temperature is 15-25°C. Keep container tightly sealed when not in use to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Acidity (as H3PO4)	≤ 0.1%
Water Content (KF)	≤ 0.2%
Refractive Index (20°C)	1.550 - 1.560
Density (20°C)	1.180 - 1.200 g/mL

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