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Purate® is a brand name for a small scale chlorine dioxide precursor. It is comprised of sodium chlorate and hydrogen peroxide. Purate is a registered trademark of Eka Chemicals, Inc.. When reacted with sulfuric acid, Purate produces chlorine dioxide. The reaction of these two chemicals is carried out in a SVP-Pure® chlorine dioxide generator.

NaClO3 + 1/2H2O2 + 1/2H2SO4 → ClO2 + 1/2Na2SO4 + 1/2O2+ H2O

2NaClO3 + H2O2 + H2SO4 → 2ClO2 + Na2SO4 + O2+ 2H2O