Purolite S920 thiouronium chelating ion exchange resin  

SC720 is a macro porous polystyrene based, thiouronium chelating resin, with functional groups designed for the selective removal of heavy metals, especially for Hg, Au, Pt, Pd etc.

SC720 can be useful for problems where removal of ions Au, Pt, Pd is desired.

The most common application for SC 720 is for mercury in different solutions, by its high selectivity, it could reduce the mercury content to 5ppb.
Other Application may be found in different fields of chemical technology such as waste water treatment, recovery of precious metals from rinse waters in the galvanic and electronic industries.
It is also used in hydrometallurgy for the separation of precious metals from acid liquors.

SC 720 is more resistant to oxidation than thiol based resins and contact with the atmosphere is not detrimental. Considered the long usage time and tight combination of mercury, normally it is not recommended to regenerate for reuse.