Trialkyl Phosphorous Oxide SI 923

Trialkyl Phosphorous Oxide (SI 923), equivalent to Cyanex 923, is a high-performance organophosphorus compound widely recognized for its excellent extraction properties in hydrometallurgical and solvent extraction applications. It effectively extracts and separates metal ions such as uranium, rare earths, cobalt, nickel, and zinc from aqueous solutions.

With outstanding thermal and chemical stability, SI 923 ensures reliable performance under harsh industrial conditions. Its superior solubility in various organic solvents and excellent phase separation properties make it a preferred choice for metal extraction and purification processes.

The product’s balanced composition of multiple phosphine oxide species provides a strong synergistic effect, enhancing selectivity and extraction efficiency for targeted metals.

Product Name: Trialkyl Phosphorous Oxide (Equivalent to Cyanax 923) SI 923

Product Appearance: Colorless to amber clear liquid

Specifications

Specifications Standard Typical
Trialkyl Phosphorous Oxide (%) ≥ 93% 95%
Trihexyl Phosphine Oxide (%) 28 ~ 35 29%
Dihexyl Octyl Phosphorous Oxide (%) 32 ~ 37 34%
Mono Hexyl Dioctyl Phosphorous Oxide (%) 22 ~ 26 25%
Trioctyl Phosphorous Oxide (%) 05 ~ 14 6%
Boiling Point: 420 ~ 460 °C –
Freezing Point: 0 ~ 5 °C –
Moisture: ≤ 5% –
Molecular Weight: 330.5 –

Key Features

  • Equivalent to Cyanex 923
  • High extraction efficiency for metal ions
  • Excellent thermal and chemical stability
  • Strong synergistic performance with acidic extractants
  • Low volatility and high solubility in organic solvents

Applications

  • Solvent extraction of rare earth elements
  • Uranium and thorium recovery
  • Nickel and cobalt extraction
  • Purification and separation in hydrometallurgical systems

Storage & Handling

Store in a cool, dry, and well-ventilated area away from heat and moisture. Use personal protective equipment (PPE) and refer to the Safety Data Sheet (SDS) before handling.

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