Last reviewed: September 2026
Sodium permanganate (NaMnO4) is a liquid permanganate oxidant used in drinking water, wastewater, and industrial treatment. Its treatment applications overlap with potassium permanganate, including oxidation of iron, manganese, hydrogen sulfide, and selected taste- and odor-causing compounds.
Sodium Permanganate
Sodium Permanganate in Water Treatment
Common applications
- Oxidation of dissolved iron and manganese ahead of solids removal
- Hydrogen sulfide and odor control
- Treatment of selected taste and odor compounds
- Oxidant feed programs that benefit from a liquid product
Process and handling considerations
As a liquid product, sodium permanganate can be fed without dissolving a dry oxidant. A system still requires compatible storage, secondary containment, metering pumps, tubing, injection equipment, housekeeping, and operator training. Results depend on water chemistry, oxidant demand, reaction time, temperature, and downstream treatment. Application rates should be established through water analysis and site-specific testing.
Compare sodium and potassium permanganate for water treatment.
Contact WSU about sodium permanganate availability and delivery.
Source: U.S. EPA, Understanding Water Treatment Chemical Supply Chains and the Risk of Disruptions.
