Premium Low-Volatility Permanent Plasticizer | Trioctyl Trimellitate (TOTM) Product Overview

📝 Product Overview

Trioctyl Trimellitate (also known as TOTM or Tris(2-ethylhexyl) trimellitate) is a premium, high-molecular-weight primary plasticizer, with CAS number 3319-31-1 and chemical formula C33H54O6.

As a permanent plasticizer, TOTM combines the processing advantages of monomeric plasticizers (like DOP/DOTP) with the durability performance of polymeric plasticizers. It is characterized by its extremely low volatility, excellent resistance to extraction by soapy water, and superior thermal stability. It is the industry standard for PVC applications requiring long-term flexibility under high-temperature conditions without the risk of migration or fogging.

🔬 Key Specifications

• Appearance：Clear, odorless, oily liquid
• Color (APHA)：≤30
• Purity：≥99.0%
• Acid Value (mg KOH/g)：≤0.10
• Flash Point (Open Cup)：≥240°C
• Density (20°C, g/cm³)：0.984 - 0.992

🚀 Application Areas

TOTM is widely utilized in high-end PVC processing and specialty polymer applications where durability and heat resistance are non-negotiable.

1. High-Temperature Wire & Cable:TOTM is the essential plasticizer for 105°C grade wire and cable compounds. Its low volatility ensures that the cable sheath remains flexible over decades of use, meeting stringent UL and international safety standards for electrical insulation. Recommended use: Often used as the sole plasticizer or blended with DIDP/DOTP for optimized performance.

2.Automotive Interior Components: Used in the production of dashboards, door panels, and interior trim. Due to its low-fogging characteristics, it prevents the formation of oily residues on the interior of car windshields, enhancing driver visibility and interior aesthetics.

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

4. Specialized Gaskets and Seals: Ideal for refrigerator gaskets, washing machine seals, and window weatherstripping. Its resistance to migration ensures that it does not soften or mar adjacent surfaces (such as ABS or lacquer coatings) over time.

5.High-Performance Inks & Coatings: Applied in specialty inks and surface coatings to provide permanent flexibility and resistance to weathering. It is particularly effective in environments where the coating is exposed to fluctuating temperatures.

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

📦 Packaging and Storage

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