Persulfates for viscosity breaking "down hole" VIGOROX® PERACLEAN® Markets & Products Oil & Gas, Petrochemicals Ammonium Persulfate Stable persulfate for oxidation, etching, bleaching, or polymerization initiation. Potassium Persulfate Stable persulfate for oxidation, etching, bleaching, or polymerization initiation. Sodium Persulfate Stable persulfate for oxidation, etching, bleaching, or polymerization initiation. View all Related Markets Oil & Gas, Petrochemicals Improved recovery and resource efficiency. Innovative solutions from Evonik