Di-2-ethylhexyl hydrogen phosphate

Di-2-ethylhexyl hydrogen phosphate, commercially known as D2EHPA, is an organophosphoric acid extractant used across hydrometallurgy, lubricant formulation, and industrial separation processes. It functions primarily as a selective metal extractant and chelating agent, enabling the recovery and purification of target metals from aqueous streams. This compound is identified by CAS 298-07-7.

In mining and hydrometallurgy, it is the extractant of choice for recovering cobalt, nickel, zinc, and rare earth elements from leach solutions via solvent extraction circuits. Petroleum refiners use it to remove trace metal contaminants from process streams, protecting downstream catalysts and improving product quality in various industrial applications.

In lubricant and metalworking fluid formulations, it acts as a corrosion inhibitor and anti-wear additive, particularly in systems handling non-ferrous metals during manufacturing. It also functions as a carrier solvent in liquid-liquid extraction systems designed for uranium and vanadium recovery. The product is supplied as a clear to pale yellow liquid.

It is typically available in drum and IBC quantities suited to industrial-scale extraction operations. Technical grade is the standard offering, with purity ranging from 95% to 99%. Buyers sourcing for hydrometallurgical circuits typically require low water content and controlled acid value specifications to ensure optimal performance in their specific chemical processes.