Description

Phosphoric Acid 2,6-Dimethylphenyl=Phenyl=2,4,6-Trimethylphenyl Ester CAS NO 73179-41-6 is a specialized organophosphorus compound valued for its unique sterically hindered phenolic structure. This compound is significant as a high-performance intermediate and additive, offering enhanced thermal and oxidative stability in demanding formulations. It is primarily needed by manufacturers in the polymer, lubricant, and specialty chemical industries seeking to improve product longevity and performance under extreme conditions.

Application

• As a stabilizer and antioxidant in high-temperature polymers and engineering plastics.
• As a performance additive in synthetic lubricants and greases to prevent oxidation and degradation.
• As a key chemical intermediate in the synthesis of advanced flame retardants and plasticizers.
• In the formulation of specialty coatings and adhesives requiring enhanced durability.
• As a stabilizing agent in hydraulic fluids and other functional fluids exposed to oxidative stress.
• For research and development in organophosphorus chemistry and material science.

Basic Information

Product Name	Phosphoric Acid 2,6-Dimethylphenyl=Phenyl=2,4,6-Trimethylphenyl Ester
CAS No.	73179-41-6
Molecular Formula	C23H25O4P
Molecular Weight	396.42 g/mol
Synonyms	Phosphoric Acid, Mixed 2,6-Dimethylphenyl Phenyl 2,4,6-Trimethylphenyl Ester; Tris(2,6-dimethylphenyl) Phosphate (related isomer); Aryl Phosphate Ester; Sterically Hindered Phenolic Phosphate; Phosphoric Acid Tris(methylphenyl) Ester; Flame Retardant P-45 (example trade name); TMPP-DMP Derivative; Organophosphate Stabilizer
EINECS	Contact for details

Quality Control

Our production of Phosphoric Acid 2,6-Dimethylphenyl=Phenyl=2,4,6-Trimethylphenyl Ester adheres to a strict quality management system. Each batch undergoes rigorous analytical testing, including assay by HPLC and identification by spectroscopic methods, to ensure high purity and consistent performance. Certificates of Analysis (COA) documenting all critical specifications are provided with every shipment to guarantee compliance with your technical requirements.

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 maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Acidity (Titration)	≤ 1.0 mg KOH/g
Specific Gravity (20°C)	1.15 - 1.25
Refractive Index (20°C)	1.550 - 1.570

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