1. Trioctyl Trimellitate (TOTM) Product Overview

📝 Product Overview

Trioctyl Trimellitate (commonly known as TOTM or Tris(2-ethylhexyl) trimellitate) is a premium, high-molecular-weight primary plasticizer. With the CAS number 3319-31-1 and chemical formula $C_{33}{H}_{54}{O}_6$, it is widely regarded as the industry standard for high-durability and high-temperature polymer applications.

As a permanent plasticizer, TOTM successfully bridges the gap between monomeric plasticizers (such as DOP and DOTP) and polymeric plasticizers. It combines the easy processing characteristics of monomerics with the outstanding durability performance of polymerics. It features extremely low volatility, excellent resistance to extraction, and superior thermal stability.

🔬 Key Specifications

• Appearance: Clear, odorless, oily liquid
• Purity: $\ge 99.0\mathrm{\%}$
• Color (APHA): $\le 30$
• Acid Value (mg KOH/g): $\le 0.10$
• Flash Point (Open Cup): $\ge {240}^{\circ }\text{C}$
• Density (20°C, g/cm³): $0.984-0.992$
• Water Content: $\le 0.1\mathrm{\%}$
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🚀 Application Areas

TOTM is utilized globally in high-end PVC compounds and specialty elastomers where heat resistance and low migration are critical.

① High-Temperature Wire & Cable: TOTM is the essential plasticizer for ${105}^{\circ }\text{C}$ grade wire and cable insulation. Its extremely low volatility ensures that the cable sheath remains flexible over decades of use, meeting stringent UL, CSA, and international safety standards for electrical wiring.

②Automotive Interior Components: Used in dashboards, door panels, and interior trims. Thanks to its low-fogging characteristics, it prevents the deposition of oily, volatile residues on the inside of car windshields, enhancing driver visibility and maintaining interior aesthetics.

③Medical Devices & Tubing: In medical-grade PVC, TOTM offers excellent resistance to extraction by lipids and aqueous fluids. It serves as a safer, more stable alternative to phthalates in sensitive applications like blood bags, dialysis tubing, and breathing masks.

④ Specialized Gaskets & Seals: Ideal for refrigerator gaskets, washing machine seals, and window weatherstripping. Its high resistance to migration ensures it does not soften or damage adjacent surfaces such as ABS plastics or lacquered coatings.

⑤ Synthetic Leather: Used for high-end upholstery in the furniture and transportation sectors. TOTM imparts a premium "soft touch" that lasts much longer than standard plasticizers, even when subjected to direct sunlight and high heat.

📦 Packaging and Storage

• Packaging: Typically supplied in 200 kg galvanized iron drums, 1,000 kg IBC tanks, or Flexitanks for bulk ocean shipments.
• Storage: Store in a cool, dry, and well-ventilated area. Keep containers tightly sealed when not in use to prevent moisture absorption.
• Shelf Life: 12 months under standard storage conditions.