Mono(2-ethylhexyl) 2-ethylhexylphosphonate

CAS 14802-03-0

PC-88A shows why extractant structure matters in metal separation. CAS 14802-03-0 identifies a phosphonic acid monoester with an acidic head and branched hydrocarbon groups. Its cation-exchange behavior supports applications including cobalt-nickel separation. The molecule differs from phosphate diesters and from fully esterified tributyl phosphate, so their mechanisms should not be treated as interchangeable. Actual separation depends on acidity, feed composition, and the extractant form used. A study involving a sodium salt is also not identical to using the free acid. This compound connects a precise molecular arrangement with a larger process objective: transferring selected metals between phases while controlling what accompanies them. Useful recovery requires both extraction and selectivity, established for the particular mixture being processed rather than assumed from a product name.