Description

Trioctyl Trimellitate CAS NO 89-04-3 is a high-performance, high-molecular-weight ester plasticizer derived from trimellitic anhydride and 2-ethylhexanol. It is valued for its exceptional permanence properties, including low volatility, excellent resistance to extraction by water and oils, and superior thermal stability. This makes it a critical component for manufacturers requiring durable, long-lasting plasticized products in demanding environments. Key industries that rely on this specialty plasticizer include wire and cable, automotive, and high-temperature polymer applications.

Application

• Primary Plasticizer for PVC: Used in high-temperature wire and cable insulation, automotive interior trim, and other applications requiring low volatility and migration.
• Synthetic Rubber Compounding: Imparts flexibility and low-temperature properties to nitrile rubber (NBR) and other elastomers used in seals and gaskets.
• High-Performance Adhesives and Sealants: Provides permanence and durability in formulations exposed to heat and moisture.
• Coated Fabrics and Artificial Leather: Offers excellent resistance to extraction and staining, maintaining product quality over time.
• Polymer Modification: Acts as a processing aid and plasticizer for various engineering polymers to improve flexibility and processability.
• Specialty Lubricants and Functional Fluids: Utilized as a base or additive due to its thermal stability and low pour point.

Basic Information

Product Name	Trioctyl Trimellitate
CAS No.	89-04-3
Molecular Formula	C33H54O6
Molecular Weight	546.78 g/mol
Synonyms	1,2,4-Benzenetricarboxylic acid, trioctyl ester; Tri(2-ethylhexyl) trimellitate; TOTM; Trioctyl ester of trimellitic acid; Trimellitic acid trioctyl ester; Tris(2-ethylhexyl) benzene-1,2,4-tricarboxylate; TEHTM; Plasticizer TOTM
EINECS	201-877-7

Quality Control

Our Trioctyl Trimellitate is manufactured under a stringent quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, color, acidity, and physical properties. We provide full traceability and a Certificate of Analysis (COA) with each shipment to guarantee consistency and 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 heat sources and incompatible materials. Recommended storage temperature is between 15°C and 25°C (59°F and 77°F). Keep container tightly sealed when not in use to minimize moisture absorption.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow viscous liquid
Identification (IR)	Conforms
Assay (GC)	≥ 99.0%
Acidity (as Trimellitic Acid)	≤ 0.02%
Color (APHA)	≤ 50
Water Content (KF)	≤ 0.10%
Refractive Index (n20D)	1.483 - 1.487
Density (20°C)	0.990 - 0.997 g/cm³
Flash Point	> 240°C

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