Tris(2-ethylhexyl) Trimellitate (TOTM) is a widely used plasticizer known for its performance characteristics. Understanding its chemical properties and stability is crucial for its effective and safe utilization in various industrial applications. This article provides a detailed overview of the chemical nature of TOTM, its stability under different conditions, and essential handling and storage guidelines.

Chemical Composition and Identification

Tris(2-ethylhexyl) Trimellitate, with the chemical formula C33H54O6, is an esterification product of trimellitic acid and 2-ethylhexanol. It is commonly identified by its CAS number 3319-31-1. The molecule consists of a benzene ring substituted with three ester groups, each attached to a 2-ethylhexyl chain. This structure imparts a balance of polarity and lipophilicity, contributing to its effectiveness as a plasticizer for PVC and other polymers.

Physical and Chemical Properties

  • Appearance: Colorless to light yellow transparent oily liquid.
  • Molecular Weight: 546.78 g/mol.
  • Density: Approximately 0.990 g/mL at 20 °C.
  • Boiling Point: 414 °C (literature value).
  • Melting Point: Reported as -46 °C, indicating it remains liquid at standard room temperatures.
  • Flash Point: 505 °F (263 °C) (closed cup), signifying good thermal stability and relatively low flammability risk under normal conditions.
  • Refractive Index: n20/D 1.485.

Stability and Reactivity

Tris(2-ethylhexyl) Trimellitate is generally considered stable under normal storage and handling conditions. However, like many organic compounds, it has certain incompatibilities:

  • Oxidizing Agents: TOTM is incompatible with strong oxidizing agents. Contact with such substances can lead to vigorous reactions, potentially causing fires or explosions.
  • Combustibility: It is a combustible liquid. While its high flash point indicates a reduced fire risk compared to more volatile solvents, it should be kept away from open flames, sparks, and other ignition sources.

To ensure its stability and prevent degradation, it is recommended to store TOTM in tightly closed containers in a cool, dry, and well-ventilated area, away from incompatible materials.

Handling and Storage Guidelines

When handling Tris(2-ethylhexyl) Trimellitate, it is important to follow standard chemical safety practices:

  • Ventilation: Use in well-ventilated areas to prevent the accumulation of vapors.
  • Personal Protective Equipment (PPE): Wear appropriate PPE, including chemical-resistant gloves, safety glasses or goggles, and protective clothing to avoid skin and eye contact.
  • Storage: Store in original, tightly sealed containers. Keep containers closed when not in use. Avoid exposure to direct sunlight or extreme temperatures. Ensure the storage area is free from ignition sources.

Sourcing Quality TOTM from NINGBO INNO PHARMCHEM CO.,LTD.

For businesses requiring a reliable supply of Tris(2-ethylhexyl) Trimellitate with consistent quality, NINGBO INNO PHARMCHEM CO.,LTD. is a trusted manufacturer and supplier in China. We ensure our products adhere to strict quality control measures, guaranteeing their chemical integrity and performance for your specific applications. Whether you need TOTM for industrial plastics or specialty applications, partnering with us means securing a dependable source for this essential chemical.