Search

CYANEX® 272 is a dialkyl phosphinic acid extractant widely used for the separation of cobalt from nickel to produce high purity cobalt salts and cobalt metal. Since the active component of CYANEX 272 extractant is a phosphinic acid, metals are extracted through a cation exchange mechanism. Although CYANEX 272 extractant is selective for cobalt in the presence of nickel, a variety of other cations can also be extracted depending on the solution pH. CYANEX 272 extractant is totally miscible with common aromatic and aliphatic diluents, and is extremely stable to both heat and hydrolysis.

CYANEX® 301 is a dialky1dithiophosphinic acid extractant. This sulfur-containing compound is a much stronger acid than its analogous oxy-acid, CYANEX 272. As such, it is capable of extracting many metals at lower pH (<2) and has found commercial application for the separation of nickel and cobalt from magnesium and manganese.

CYANEX® 572 is a highly stable phosphorus based chelating extractant that is designed to improve SX performance relative to traditional phosphonic acid extractants. It has been specially formulated for the extraction and purification of rare earth elements. It has an extraction strength profile which allows efficient extraction of the heavy rare earth elements while allowing the back extraction / stripping operation to utilize lower strip acid concentrations.

CYANEX® 600 is used for the purification and concentration of molybdenum from acidic solutions. Relative to tertiary amine extractants, CYANEX 600 has several advantages, such as improved selectivity for Mo over other metals commonly present in leach solutions including arsenic, iron, aluminum, copper, chromium, and rhenium, higher Mo loading capacity and improved phase disengagement characteristics.

CYANEX 923 extractant is a liquid phosphine oxide which has potential applications in the solvent extraction recovery of both organic and inorganic solutes from aqueous solution, e.g. carboxylic acids from effluent streams and the removal of arsenic impurities from copper electrolytes.