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DIAION™ CR20

Description

DIAION™ CR20

DIAION™ CR20 has polyamine group as a chelating ligand which is bonded onto a highly porous crosslinked polystyrene matrix. DIAION™ CR20 shows large affinity for transition metal ions but does not adsorb alkali, alkaline earth, and Sn, Zr, Th, Al, Fe(II) ions.

The selectivity order of DIAION™ C R11for metal ions is as follows:

Hg2+ > Fe3+ > Cu2+ > Zn2+ > Cd2+ > Ni2+ > Co2+ > Ag+ > Mn2+

Adsorbed metal ions can be eluted with an acid, and the resin can be reused after regeneration with caustic alkali.