Fenton's reagent is used as a sewage treatment agent.
Fenton's reagent can be used in different chemical procesess that supply hydroxyl ion or oxidize certain compounds:
* The first stage of Fenton’s reaction (oxidation of Fe with hydrogen peroxide) is used in Haber–Weiss reaction
* Fenton's reagent can be used in organic synthesis reactions: e.g. hydroxylation of arenes via a free radical substitution
* Conversion of benzene into phenol by using Fenton's reagent
* Oxidation of barbituric acid into alloxan.
* Coupling reactions of alkanes