7727-21-1 Anthion Dipotassium persulfate NSC326763 Peroxydisulfuric acid ([(HO)S(O)2]2O2), dipotassium salt Potassium peroxosulfate Potassium peroxydisulfate Potassium peroxydisulfate (K2(S2O8)) Potassium peroxydisulfate (K2S2O3) Potassium peroxysulfate Potassium persulfate Potassium persulfate (K2S2O8)