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Name: Potassium Permanganate
Chemical Formula: KMnO₄
Appearance: Deep purple, crystalline solid with a metallic luster
Odor: Odorless
Common Uses: Water treatment, disinfectant, oxidizer, and laboratory reagent
Other Names: Condy's crystals
Hazard Class: Oxidizing solid, dangerous for skin and eyes
Physical Risks: Strong oxidizer, can spark fires if mixed with flammable materials like sugar or organic matter
Health Risks: Causes burns to skin and eyes, harmful if inhaled or swallowed
Signs of Exposure: Skin stains, irritation, breathing difficulty, respiratory distress if powdered form is inhaled
Long-term Concerns: Prolonged contact can trigger ulcers or kidney injury in rare cases
Pictograms: Flame over circle, health hazard, corrosion symbol commonly feature on labels
Chemical: Potassium Permanganate
Chemical Identity: KMnO₄, Manganese(VII) oxide combined with potassium
Purity: Usually over 99% in commercial and laboratory supplies
Impurities: Small traces of sodium or magnesium compounds in some lots
Inhalation: Move to fresh air quickly; breathing problems require medical attention right away
Skin Contact: Remove contaminated clothes, rinse stained skin under running water for at least fifteen minutes; stubborn stains take days to fade
Eye Contact: Wash eyes at an eyewash station or under running water for ten minutes minimum, keep eyelids open, get medical care fast
Ingestion: Give water or milk if the person is alert, avoid inducing vomiting, seek emergency help immediately
Symptoms to Watch: Swelling, pain, trouble breathing, severe eye pain or vision changes all call for urgent care
Extinguishing Media: Non-combustible itself, but enhances fire if mixed with organic material; use dry chemical or foam on burning materials
Special Hazards: Strong oxidizer, heat or friction with combustibles can start a fire or explosion; intense heat releases toxic manganese fumes
Protective Gear: Full face mask with positive pressure respirator, flame resistant gear, gloves, and self-contained breathing apparatus recommended
Advice for Firefighters: Stay upwind, keep runoff out of drains or waterways, cool containers with water spray from a safe distance
Personal Protection: Gloves, goggles, chemical-resistant apron, proper respirator for powder spills
Cleanup Method: Remove spill with dry tools, avoid creating dust or adding water; do not mix with combustible debris
Disposal for Small Spills: Scoop into a clean, dry, sealable container; avoid letting residue enter drains
Ventilation: Open windows, run exhaust fans if working indoors
Storage Conditions: Dry, cool, well-ventilated place away from flammable substances, organic chemicals, acids, and reducing agents
Segregation: Keep container tightly closed; store alone from food, paper, or textile stock.
Handling Advice: Avoid inhaling dust, use tools carefully to prevent friction, keep container upright and sealed
Transport Caution: Do not stack heavy weights on top; make sure outer packaging is intact before moving
Exposure Limits: No established OSHA limit for potassium permanganate, but limits for manganese dust often apply; common threshold is 0.2 mg/m³ for manganese compounds
Engineering Controls: Use fume hoods, local exhaust, and dust collection systems
Personal Protection: Lab coats, goggles, nitrile gloves, NIOSH-approved respirator if dust is present
Hygiene Practices: Wash hands thoroughly before breaks or leaving the lab; no eating or drinking near the material
Contaminated Clothing: Remove and wash before reuse
Form: Crystalline solid
Color: Deep purple to almost black
Solubility: Dissolves in water, giving a pink or purple solution
Odor: Odorless
Melting Point: Decomposes above 240°C
Density: About 2.7 g/cm³
Reactivity: Strong oxidizer; reacts vigorously with many chemicals
Vapor Pressure: Negligible at normal temperatures
Chemical Stability: Stable under recommended storage conditions, no real breakdown in dry, sealed containers
Reactivity: Violent with glycerin, sugars, sulfur, strong acids, and many organics; reacts with hydrochloric acid to release toxic chlorine
Conditions to Avoid: Heat, shock, friction, contact with flammables or reducing agents
Hazardous Decomposition: Manganese oxides, potassium oxides, oxygen, sometimes chlorine if mixed with certain acids
Routes of Exposure: Skin contact, inhalation, ingestion, eye contact
Immediate Effects: Corrosive burns, intense eye irritation, cough, breathing difficulty
Chronic Effects: Extended exposure can impact respiratory system, central nervous system for manganese dust
Acute Toxicity: Large ingestion or prolonged skin contact needs urgent care
Symptoms Noticed: Nausea, vomiting, abdominal pain if swallowed; irritation for skin and eyes
Toxic to Aquatic Life: Releases manganese that harms water organisms even at low concentrations
Persistence: Does not break down quickly in water; oxidizes organic matter, upsets aquatic ecosystems
Bioaccumulation: Manganese tends to build up in some species; risk to fish and plants over time
Advice: Never pour waste or solution into sinks or outdoor drains, spills require cleanup with care to keep out of soil and water
Disposal Method: Treat as hazardous waste, follow local and federal rules strictly
Handling Waste: Collect separately, never mix with flammable or organic trash
Recycling: Unused solution sometimes reclaimed with reducing agents under expert supervision
Cleanup: Rinse equipment with lots of water, neutralize any residues, label containers for disposal clearly
Regulatory Guidance: Check EPA and local environmental authorities for permitted disposal methods
UN Number: Classified as UN 1490 for shipping
Danger: Packed as oxidizer, requires special labeling for land, sea, or air transport
Packaging Group: Group II or III depending on hazard level
Handling in Transit: Sturdy drums or bottles, protected against impact and moisture
Response in Accident: Emergency responders notified that risk of fire or toxic gas is high if spilled or mixed
Classification: Controlled as a hazardous material in the U.S. under EPA, OSHA, and DOT rules
Labeling: Must show oxidizer and poison symbols
Workplace Controls: OSHA hazard communication standard, worker training, and access to updated MSDS
Special Limits: Use restrictions in drinking water and food handling
Compliance Check: Facilities that stock above threshold quantities need emergency plans, emergency contact notices, and proper record-keeping
