Potassium Permanganate, KMnO4Synonyms: Permanganate of Potash; Condy’s crystals; Permanganic acid, potassium salt; Technical grade. Guranteed 97% KMnO4. Used as oxidizer, disinfectant,deodorizer,bleach,dye,tanning, air and water purification.Strong oxidizing agentConverts dissolved iron to insoluble oxides which are removed through filtrationConverts manganese to insoluble oxides which are removed through filtrationRegenerates green sand iron filters2 to 3 percent solution of potassium permanganate (KMnO4) is used to regenerate green sand filters.Dissolve one teaspoon in one gallon water for athlete’s foot fungus infection. May not be combined with other chemicals in the same invoice.Will only be shipped by UPS or FedEx Ground. No AIR or PRIORITY SHIPPING.