AD290 is a high-efficiency extractant specifically designed for the separation of nickel and cobalt in hydrometallurgical processes. It is widely used in the mining and metallurgical industries, particularly in the extraction of nickel and cobalt from ores, concentrates, and solution streams.
Active ingredient: Bis(2,4,4-trimethylpentyl) phosphinic acid
CAS No.: 83411-71-6
Molecular formula: C16H35O2P
Molecular weight: 290.42 (according to the Standard Atomic Weights 1987)
Bis(2,4,4-trimethylpentyl) phosphinic acid
290.42 (according to the Standard Atomic Weights 1987)
An application for the high-efficiency extractant AD290 is in the separation of nickel and cobalt. It is widely employed to extract nickel from ores, concentrates, and solution streams during hydrometallurgical processes.
It is also suitable for the extraction and separation of rare earths: gallium (Ga), indium (In), molybdenum (Mo), germanium (Ge), zirconium (Zr) and other metals.
Packing: 200 kg/plastic barrel.
Storage: Handled with care during transportation to prevent impact, prohibiting open flame. Stored in a cool, ventilated and dry warehouse, ensuring waterproof and rainproof.
Diisooctylphosphinic Acid %
Colorless or light amber
Density (20℃) g/mL
Viscosity (cp) 25℃ mm2/s
Solubility in Water (PH=3. 0) mg/L
Boiling Point ℃
Freezing Point ℃
Flash Point ℃
Separation Coefficient βCo/Ni
Chelation: AD290 acts as a chelating agent, forming stable complexes with nickel ions present in an aqueous solution. The chelation process involves the formation of chemical bonds between AD290 molecules and the metal ions, particularly nickel.
Selective Extraction: AD290 exhibits a high selectivity for nickel over cobalt, allowing for the preferential extraction of nickel from a mixed metal solution. When AD290 is dissolved in an organic solvent, it creates an interface between the aqueous and organic phases.
Solvent Extraction: The aqueous solution containing nickel and cobalt ions is mixed with the AD290 organic extractant. AD290 selectively interacts with the nickel ions, forming soluble complexes that are transferred into the organic solvent phase.
Phase Separation: After the extraction, the organic phase containing the nickel-AD290 complexes is separated from the aqueous phase. Various techniques such as settling, centrifugation, or decantation are employed to achieve phase separation.
Stripping and Recovery: The nickel ions can be recovered from the organic phase by employing suitable stripping agents or solutions. These agents break the complexes formed with AD290, resulting in the release of nickel ions into a new aqueous solution or suitable medium.
Recycling: The organic phase containing AD290 can be recycled by removing impurities and reusing it in the extraction process, contributing to cost-effectiveness and sustainability.
Yes, AD290 can be recycled and reused. The organic phase containing AD290 can undergo purification steps to remove impurities, enabling its reuse in subsequent extractions. This recycling contributes to the cost-effectiveness and sustainability of the process.
Like any chemical compound, it is important to handle AD290 with proper safety precautions. Users should refer to safety data sheets and follow recommended guidelines for storage, handling, and disposal to ensure safe use.
AD290 can be used in combination with other extractants or chemicals to optimize the extraction process. Compatibility studies should be conducted to ensure efficient operation and avoid any undesirable chemical interactions.