SEARCH Articles Figures Tables 2-ethylhexyl phosphonates ETHYLHEXYL Phosphonate esters Phosphonic acid Phosphonic acid esters Phosphonic acid, 2-ethylhexyl2-ethylhexyl ester solvent extraction, cobalt Phosphonic acid/phosphonate Phosphonic acids acidity Phosphonic ester Phosphonous Esters Phosphonous acid Phosphonous acid esters