トリオクチルアミン CAS 1116-76-3

よくある質問 — 技術・供給について

• 質問:

  What is Trioctylamine CAS 1116-76-3?

  回答: Trioctylamine, also called tri-n-octylamine or TOA, is a high-molecular-weight tertiary aliphatic amine with the formula C24H51N. It consists of three octyl chains attached to a central nitrogen atom, giving it strong hydrophobicity, low volatility, and good compatibility with organic solvents.
• 質問:

  Why is Trioctylamine used in uranium and rare earth solvent extraction?

  回答: Its tertiary amine nitrogen forms reversible ion pairs with acidic metal complexes, allowing uranium, rare earth elements, and other metal ions to transfer from an aqueous phase into an organic phase. This acid-base extraction mechanism is widely used in hydrometallurgical separation and purification circuits.
• 質問:

  Is Trioctylamine soluble in water?

  回答: No, Trioctylamine is practically insoluble in water and is designed for organic-phase or biphasic extraction systems. It is soluble in many organic solvents, which is why it functions as an extractant rather than an aqueous additive.
• 質問:

  What are the key physical specifications of Trioctylamine?

  回答: Commercial Trioctylamine is typically a clear, colorless to pale yellow liquid with an amine odor, a density near 0.81-0.83 g/cm3, and a boiling point around 365-370 C. Its high molecular weight also contributes to low vapor pressure and reduced evaporation during industrial handling.
• 質問:

  Can Trioctylamine be regenerated and reused after extraction?

  回答: Yes. The extracted acid or metal complex can be stripped from the loaded organic phase with an alkaline solution, which releases the target species and regenerates the amine for another extraction cycle. This reversibility is a key reason TOA is used in continuous solvent-extraction processes.