DIISOOCTYLPHOSPHINIC ACID is primarily used as an extractant in the separation and purification of metal ions, particularly in hydrometallurgical processes. It is effective in extracting rare earth elements, uranium, and other transition metals from aqueous solutions. The compound’s ability to selectively bind with specific metal ions makes it valuable in the recovery of metals from ores, industrial waste, and recycling processes. Additionally, it is utilized in the formulation of specialty chemicals for applications in catalysis and as a stabilizer or additive in certain industrial processes. Its role in metal extraction contributes to advancements in resource efficiency and environmental sustainability.