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Material Safety Data Sheet: Potassium Permanganate

Identification

Product Name: Potassium Permanganate
Chemical Formula: KMnO4
CAS Number: 7722-64-7
Recommended Use: Water treatment, disinfectant, chemical reagent, oxidizer
Manufacturer: Various industrial chemical suppliers globally
Contact Information: Available on supplier packaging or company website
Emergency Phone Number: Listed by supplier, accessible through Poison Control or CHEMTREC on shipping paperwork

Hazard Identification

Classification: Strong oxidizer, Health hazard category 2, Environmental hazard
Signal Word: Danger
Hazard Statements: May intensify fire (oxidizer); harmful if swallowed; causes severe skin burns and eye damage; very toxic to aquatic life
Precautionary Statements: Keep away from flammable material; avoid inhalation, ingestion, and skin contact; do not breathe dust; wear protective gloves and safety goggles; avoid release to environment

Composition / Information on Ingredients

Chemical Name: Potassium Permanganate
Synonyms: Condy's crystals, permanganate of potash
Concentration: 97-100% pure for laboratory and industrial grades
Impurities: Trace amounts of sodium chloride, iron, or insoluble substances present in low concentrations

First Aid Measures

Inhalation: Move person to fresh air, keep at rest, seek medical attention for respiratory irritation or distress
Skin Contact: Remove contaminated clothing, flush skin with plenty of water for at least 15 minutes, seek immediate medical attention for burns or persistent symptoms
Eye Contact: Rinse cautiously with water for 15-30 minutes, remove contact lenses, immediately contact an eye specialist
Ingestion: Rinse mouth thoroughly, do not induce vomiting, give plenty of water if conscious, seek urgent medical assistance due to risk of mucosal burns and systemic toxicity

Fire-Fighting Measures

Suitable Extinguishing Media: Use water spray, foam, or dry powder tailored to the surrounding fire; never use carbon dioxide or halogenated extinguishers, which react with oxidizers
Specific Hazards: Releases toxic fumes of potassium oxide and manganese oxides under intense heat; enhances combustion of organic matter or flammables
Protective Equipment: Full turnout gear, self-contained breathing apparatus, chemical-resistant gloves
Additional Advice: Move containers from risk area if possible, prevent run-off from entering waterways; cool containers exposed to flames with water from a safe distance

Accidental Release Measures

Personal Precautions: Evacuate unnecessary personnel, ensure proper ventilation, don chemical splash goggles, face shield, gloves, and impervious clothing
Environmental Precautions: Prevent spillage from entering surface water, drains, and soil; inform authorities of large leaks impacting the environment
Cleanup Methods: Collect powder using tools that avoid sparks or friction, sweep up gently, store waste in a suitable closed, labeled container for disposal as hazardous waste; wash area with plenty of water, check for hidden spills, isolate contaminated cleaning materials

Handling and Storage

Handling: Avoid generating dust, keep away from heat, flame, combustible materials and reducing agents, use in a chemical fume hood or with suitable local exhaust
Storage: Store in tightly closed container, cool, dry, well-ventilated location, segregated from all organics, acids, and reducing agents; Segregate from incompatible chemical classes clearly; container labeling must comply with workplace regulations; protect from moisture and sunlight

Exposure Controls and Personal Protection

OELs: ACGIH TLV for manganese (as inhalable fraction) 0.1 mg/m3
Engineering Controls: Local exhaust ventilation, closed systems for large scale use, emergency eyewash stations and safety showers within immediate reach
Personal Protection: Chemical splash goggles, face shield, gloves (nitrile, neoprene or PVC), protective apron or laboratory coat; in case of insufficient ventilation, use NIOSH-approved respirator; wash hands and work surface after handling

Physical and Chemical Properties

Appearance: Dark purple or bronze-crystalline solid, odorless
Boiling Point: Decomposes before boiling
Melting Point: 240°C (464°F) with decomposition
Vapor Pressure: Negligible at ambient temperature
Solubility: Soluble in water, forming deep purple solutions; insoluble in alcohol
Density: 2.7 g/cm³ at 20°C
pH: Strongly alkaline in solution
Partition Coefficient: Not applicable
Flash Point: Not flammable, but strong oxidizer
Decomposition Temperature: Begins above 200°C, releases oxygen gas and manganese dioxide

Stability and Reactivity

Chemical Stability: Stable under recommended storage conditions but reacts with organic matter, acids, reducing agents and certain metals
Conditions to Avoid: Heat, shock, friction, incompatible materials, moisture
Incompatible Materials: Glycerin, ethylene glycol, alcohols, concentrated acids, peroxides, sulfur, powdered metals, reducing sugars
Hazardous Decomposition Products: Manganese oxides, potassium oxide, oxygen (may cause pressure buildup in closed containers)

Toxicological Information

Acute Toxicity: Ingestion irritates mouth, throat, gastrointestinal tract, causes severe burns, nausea, vomiting, diarrhea, circulatory collapse in severe cases
Skin Corrosion/Irritation: Yes, especially with moist skin or prolonged contact
Eye Damage/Irritation: Severe, may result in permanent injury or vision loss
Respiratory Sensitization: Dusts can irritate nose, throat, lungs
Chronic Effects: Prolonged skin exposure can cause ulceration; chronic inhalation may damage lungs, nervous system, and reproductive organs due to manganese toxicity
Carcinogenicity: Not classified as carcinogen by OSHA, IARC, or NTP
Other Effects: Risk of methemoglobinemia, systemic organ damage based on dose and absorption route

Ecological Information

Ecotoxicity: Very toxic to aquatic life, especially fish and aquatic invertebrates, due to strong oxidative action
Mobility: Soluble in water, migrates easily in surface and groundwater, persists owing to mineral nature
Persistence and Degradability: Not biodegradable; persists until reduced to manganese dioxide or other less harmful forms
Bioaccumulation: Unlikely in higher organisms, but manganese may accumulate in aquatic sediments
Other Adverse Effects: Alters water chemistry, damages gills and tissues of aquatic animals, disrupts ecosystem balance if released at high concentrations

Disposal Considerations

Waste Disposal Method: Consult local, regional, and national guidelines for hazardous waste; treat as regulated chemical waste
Contaminated Packaging: Triple rinse containers, offer to certified drum reconditioner or approved waste processor
Precautions: Do not pour solutions or solids into municipal sewers, open water sources, or regular trash; neutralize with sodium thiosulfate or hydrogen peroxide before disposal if permitted by authorities; keep accurate records of disposal

Transport Information

UN Number: 1490
Proper Shipping Name: Potassium Permanganate
Transport Hazard Class: 5.1 (oxidizer)
Packing Group: II
Labels Required: Oxidizer label required on all packages
Special Precautions: Keep away from combustible materials, avoid container damage, clearly mark containers during shipping and storage
Regulatory Agencies: Compliant with DOT (USA), IMDG, ICAO/IATA for international shipments

Regulatory Information

OSHA: Listed as hazardous for health and physical properties
TSCA Inventory: Listed in the US Toxic Substances Control Act inventory
SARA Title III: Reportable under sections 302, 304, 311, and 312
EPCRA: Covered due to acute and chronic health hazards
RCRA: Hazardous waste under federal law
Other Regulations: EU REACH - subject to registration and restrictions for industrial handling; WHMIS classification (Canada): Class C (oxidizer), Class E (corrosive material); local environmental regulations on storage and disposal apply
Additional Notes: Employers must implement hazard communication programs, train personnel, retain access to Safety Data Sheets, and submit inventory lists to regulatory agencies as required