A process for producing a purified aqueous hydrogen peroxide solution comprises
contacting an aqueous hydrogen peroxide solution containing metal ion impurities
firstly with a H+ type cation exchange resin, secondly with a carbonate
iron (CO32-) type or bicarbonate ion (HCO3-)
type anion exchange resin, and thirdly with a H+ type cation exchange
resin. Further, a process for producing a purified aqueous hydrogen peroxide solution
comprises contacting an aqueous hydrogen peroxide solution containing metal ion
impurities firstly with a H+ type cation exchange resin, secondly with
a fluoride ion (F-) type anion exchange resin, thirdly with a carbonate
ion (CO32-) type or bicarbonate ion (HCO3-)
type anion exchange resin, and fourthly with a H+ type cation exchange resin.
