Description

Trioctyl Trimellitate (TOTM) is a high-performance, high-molecular-weight trimellitate ester plasticizer. It is valued for its exceptional permanence properties, including low volatility, excellent resistance to extraction, and superior performance at elevated temperatures. This makes it a critical component for manufacturers requiring durable and reliable plasticized products. Key industries that rely on TOTM include wire and cable, automotive, and specialty polymer applications where long-term stability is paramount.

Application

• Primary Plasticizer for High-Temperature PVC: The dominant application, especially in the insulation and jacketing of electrical wires and cables (e.g., 105°C-rated wire), where it provides excellent heat aging resistance.
• Automotive Interior Components: Used in PVC compounds for dashboard skins, interior trim, and under-the-hood applications due to its low fogging characteristics and durability.
• Specialty Films and Sheeting: Imparts flexibility and permanence in films for roofing, pond liners, and other coated fabrics where resistance to water and oil extraction is critical.
• Gaskets, Seals, and Hoses: Provides long-lasting flexibility and compression set resistance in elastomeric and plastisol formulations.
• Adhesives and Sealants: Acts as a permanent plasticizer to maintain flexibility and adhesion over the product's lifetime.
• Medical Device Tubing: Selected grades are used where low migration and high biocompatibility are required, subject to strict regulatory compliance.

Basic Information

Product Name	Trioctyl Trimellitate
CAS No.	3319-31-1
Molecular Formula	C33H54O6
Molecular Weight	546.78 g/mol
Synonyms	1,2,4-Benzenetricarboxylic acid, trioctyl ester; TOTM; Tri(2-ethylhexyl) trimellitate; Trioctyl ester of trimellitic acid; Trimellitic acid trioctyl ester; Tris(2-ethylhexyl) benzene-1,2,4-tricarboxylate; Tris(2-ethylhexyl) trimellitate; Plasticizer TOTM
EINECS	222-020-9

Quality Control

Our Trioctyl Trimellitate is manufactured under a stringent quality management system. Every batch is tested against rigorous internal specifications to ensure consistent purity, performance, and reliability. Key parameters such as assay, acid value, color, and specific gravity are verified. A Certificate of Analysis (COA) documenting these results is available for each shipment. We support compliance with relevant industry standards, including REACH, and can provide documentation to meet specific regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat sources and open flame. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (APHA)	≤ 50
Assay (GC)	≥ 99.0%
Acid Value (mg KOH/g)	≤ 0.10
Moisture (KF)	≤ 0.10%
Specific Gravity (20/20°C)	0.990 - 0.997
Refractive Index (n20D)	1.483 - 1.487

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