Potassium Permanganate (KMnO₄) for Remediation & Water Treatment
Hepure’s potassium permanganate is a remediation-grade chemical oxidant used in groundwater treatment, soil remediation, and industrial water systems. Delivered as a dry crystalline powder at >97% purity, it offers a cost-effective permanganate option for in-situ chemical oxidation (ISCO), soil blending, and water treatment applications. Independent lab testing consistently confirms that Hepure’s potassium permanganate is among the purest products available on the market.
Product Specifications
| Property | Specification |
|---|---|
| Assay | ≥97% KMnO₄ |
| Physical Form | Dark purple to bronze crystals, no odor |
| Specific Gravity | 2.70 at 15°C |
| Bulk Density | Approximately 100 lb/ft³ |
| Decomposition Temperature | Approximately 150°C |
| Maximum Dissolved Concentration | ~5% in water at room temperature |
Download Safety Data Sheet (SDS)
How Potassium Permanganate Is Used in Remediation
Potassium permanganate is delivered as a dry powder and mixed with water on-site to create solutions of up to 5% concentration for injection or application. For larger projects, Hepure can blend and deliver pre-mixed solutions directly to your site via our site-ready solutions service, eliminating on-site mixing and reducing health and safety exposure for field crews.
Key handling characteristics that make potassium permanganate well-suited for remediation projects:
- pH neutral in solution — does not alter groundwater pH during treatment
- No gas release or heat generation — reacts with contaminants without producing dangerous byproducts
- Backfill-compatible — can be added to excavation pits before backfilling to treat groundwater flowing into the excavated area
- Flexible delivery — available as dry crystals for on-site mixing or as a pre-mixed solution up to 5%
Potassium Permanganate for Soil Remediation
Potassium permanganate is one of the most widely used oxidants for treating contaminated soil. Its solid form makes it especially effective for soil blending and direct application methods.
Chlorinated Solvent Oxidation
KMnO₄ oxidizes a wide range of organic compounds, including chlorinated solvents such as trichloroethylene (TCE), perchloroethylene (PCE), dichloroethylene (DCE), polycyclic aromatic hydrocarbons (PAHs), and certain pesticides. Upon oxidation, these complex organic compounds break down into smaller, less harmful substances.
In-Situ Chemical Oxidation (ISCO)
In ISCO applications, potassium permanganate solution is injected directly into the contaminated subsurface, where it reacts with target contaminants in place. This approach treats both soil and groundwater without excavation. Potassium permanganate is particularly well-suited for ISCO at sites where lower concentration delivery (≤5%) is acceptable and cost control is a priority.
Metals Immobilization
While not its primary application, potassium permanganate can transform certain heavy metals in soil into less mobile or less toxic forms. This limits their ability to leach into groundwater or be taken up by plants.
Soil Odor Control
KMnO₄ is effective at controlling odors in contaminated soils, especially those caused by reduced sulfur compounds, by oxidizing these compounds into odorless forms.
Potassium Permanganate for Water Treatment
Potassium permanganate is used across municipal drinking water systems, industrial facilities, and wastewater treatment operations for a range of oxidation and disinfection applications.
Iron and Manganese Removal
KMnO₄ oxidizes dissolved iron and manganese into solid particles that can be removed through conventional filtration. This is especially important in well water systems where these metals are naturally present.
Hydrogen Sulfide Removal
Hydrogen sulfide gas produces a characteristic rotten-egg odor in water. Potassium permanganate oxidizes H₂S into insoluble sulfur that can be filtered out, eliminating the odor at its source.
Taste and Odor Control
KMnO₄ oxidizes the organic compounds responsible for unpleasant tastes and odors in drinking water, improving overall water quality before it reaches consumers.
Organic Matter and Contaminant Removal
Potassium permanganate oxidizes organic contaminants including phenols and other harmful chemicals. Oxidized organic matter breaks down into smaller components or solid particles that can be removed through filtration.
Disinfection
KMnO₄ has disinfectant properties and can inactivate bacteria, viruses, and other potentially harmful microorganisms in water as part of a multi-barrier treatment approach.
Why Choose Hepure’s Potassium Permanganate?
Verified Purity for Remediation
The quality of the chemical amendments used in your remediation project matters — what gets put in the ground stays in the ground. Hepure regularly tests all products through independent laboratory analysis (Galbraith Laboratories, Inc.) to identify trace metals that could be harmful to groundwater chemistry. Our potassium permanganate consistently tests as one of the purest products available for in-situ remediation.
We place particular emphasis on metals of concern at contaminated sites: arsenic, chromium, mercury, and lead — all of which test below detection limits in our product.
Trace Metals Analysis
| Element | Test Result (mg/kg) | Detection Limit (mg/kg) | Method |
|---|---|---|---|
| Silver (Ag) | ND | 0.19 | GLI Procedure ME-30 |
| Arsenic (As) | ND | 0.47 | GLI Procedure ME-30 |
| Beryllium (Be) | ND | 0.47 | GLI Procedure ME-30 |
| Cadmium (Cd) | ND | 0.094 | GLI Procedure ME-30 |
| Chromium (Cr) | ND | 0.47 | GLI Procedure ME-70 |
| Copper (Cu) | ND | 1.00 | GLI Procedure ME-30 |
| Mercury (Hg) | ND | 0.029 | GLI Procedure E80-3 |
| Nickel (Ni) | ND | 1.00 | GLI Procedure ME-30 |
| Lead (Pb) | ND | 0.094 | GLI Procedure ME-30 |
| Antimony (Sb) | ND | 0.19 | GLI Procedure ME-30 |
| Selenium (Se) | ND | 0.94 | GLI Procedure ME-30 |
| Thallium (Tl) | ND | 1.00 | GLI Procedure ME-70 |
| Zinc (Zn) | ND | 1.00 | GLI Procedure ME-30 |
ND = Not Detected. Laboratory: Galbraith Laboratories, Inc.
CFATS Compliance Support
Potassium permanganate is listed on the Department of Homeland Security’s Chemical Facility Anti-Terrorism Standards (CFATS) program. Hepure assists clients with preparation and maintenance of CSAT paperwork, so regulatory compliance does not slow down your project timeline.
Pre-Mixed Site-Ready Solutions
Don’t want to mix on-site? Hepure delivers potassium permanganate as a pre-mixed solution in concentrations up to 5%, eliminating on-site dissolution, reducing health and safety exposure, and simplifying injection logistics. Learn more about site-ready solutions.
Advantages and Considerations
| Advantages | Considerations |
|---|---|
|
Lower raw material cost — typically less expensive per unit of oxidant delivered than sodium permanganate
Safer handling profile — solid form reduces spill risk compared to concentrated liquid oxidants pH neutral — does not require pH buffering during application No heat or gas generation — stable reaction with target contaminants Flexible application — suitable for injection, soil mixing, and backfill treatment |
CFATS regulated — requires compliance paperwork (Hepure provides full support)
Maximum 5% solution — requires more water volume than sodium permanganate for equivalent oxidant delivery On-site mixing required — unless ordered as a pre-mixed site-ready solution |
Packaging and Delivery Options
| Format | Packaging |
|---|---|
| Dry Crystals | 55-lb pails or 330-lb drums |
| Pre-Mixed Solution (<3,000 gal at ≤5%) | 275-gallon totes and 55-gallon drums |
| Pre-Mixed Solution (>3,000 gal at ≤5%) | Tankers and/or 275-gallon totes |
Frequently Asked Questions
What contaminants does potassium permanganate treat?
Potassium permanganate effectively oxidizes chlorinated solvents (TCE, PCE, DCE, vinyl chloride), PAHs, phenols, hydrogen sulfide, dissolved iron and manganese, and a range of other organic contaminants. It is one of the most versatile chemical oxidants used in environmental remediation and water treatment.
What is the maximum concentration for potassium permanganate solutions?
Potassium permanganate dissolves in water at room temperature to a maximum practical concentration of approximately 5%. For applications requiring higher oxidant concentrations, sodium permanganate (available as a 40% liquid) may be a better fit.
How does potassium permanganate compare to sodium permanganate?
Both products deliver the same permanganate ion (MnO₄⁻) and have identical oxidation chemistry. Potassium permanganate is typically less expensive per unit of oxidant and is well-suited for soil blending and lower-concentration applications. Sodium permanganate is preferred when high-concentration injection and minimal water handling are priorities. Read our full comparison guide.
Is potassium permanganate safe to handle?
Potassium permanganate is a strong oxidizer and must be handled with appropriate personal protective equipment (PPE), proper storage, and compatible materials. Always follow your site-specific health and safety plan and the product Safety Data Sheet (SDS).
Does potassium permanganate require CFATS compliance?
Yes. Potassium permanganate is listed under the Department of Homeland Security’s Chemical Facility Anti-Terrorism Standards (CFATS) program. Hepure provides full support with CSAT paperwork preparation and maintenance to help keep your project on schedule.
Get a Quote for Your Project
Whether you need dry crystals, pre-mixed solutions, or bulk tanker delivery, Hepure can recommend the right potassium permanganate product and packaging for your site conditions and project requirements. Contact our technical team for a custom quote and site-specific guidance.
View case studies to see how potassium permanganate has been applied on remediation projects similar to yours.