Potassium permanganate solution 0.02 mol/L or Standard permanganate solution or Standard potassium permanganate solution for titration

Product Overview & Quality

Product Name: Potassium permanganate solution 0.1N or 0.02 mol/L or Standard Volumetric Potassium Permanganate Solution or Chameleon mineral volumetric solution 0.1 Normal
Brand: QReC (Product Code: QR-P5227-0-1001)
Grade: Volumetric Standard Analytical Grade (AR Grade) precisely standardized to an exact titer factor within 0.999 to 1.001 at 20 degrees Celsius, certified to four decimal places. Formulated and quality-controlled under strict QReC global laboratory specifications, directly traceable to National Institute of Standards and Technology (NIST) primary sodium oxalate reference material. Compounded from high-purity crystalline potassium permanganate and high-resistivity deionized water, followed by aging and thorough filtration to completely remove trace insoluble manganese dioxide (which autocatalyzes decomposition). Trace impurities of chloride, sulfate, and foreign heavy metals are rigorously minimized. Clear, deep purple volumetric solution packaged in a heavy-duty, light-protective 1,000 mL (1 L) amber glass bottle fitted with an airtight tamper-evident safety closure.
Physical Properties: Clear, intensely deep purple, violet, or reddish-purple liquid with a faint bronze reflective sheen. Odorless. Thermodynamically stable in dark, airtight glass containers under controlled storage, but undergoes photolytic and thermal reduction upon prolonged exposure to light, heat, or organic contaminants, depositing insoluble brown manganese dioxide residues. Non-combustible inorganic aqueous solution possessing strong oxidizing properties. Aqueous matrix is neutral to weakly acidic (pH approximately 6.0 to 8.0 at room temperature). Readily produces persistent brown manganese oxide stains on contact with skin and organic surfaces.
Solubility: Fully miscible with water in all proportions; incompatible with organic solvents due to spontaneous and potentially vigorous redox reactions.
Key Use: Universally utilized as a classical Primary Oxidizing Titrant in redox permanganometry (Permanganate Titration), operating as an exceptional self-indicating reagent where the persistent faint pink color of trace unreduced permanganate provides a razor-sharp, unambiguous visual endpoint without external indicators. Heavily employed in environmental analytical laboratories for determining the Permanganate Index (Permanganate Value / PV / Chemical Oxygen Demand by Permanganate) in drinking water, ground water, and surface waters to quantify oxidizable dissolved organic matter according to ISO and EN standards. Extensively applied in metallurgical and geological testing for the direct volumetric quantification of ferrous iron (Iron II) in ores, alloys, and pickling liquors. Serves as the definitive standard titrant for the indirect determination of calcium following calcium oxalate precipitation and sulfuric acid dissolution. Widely used for quantifying hydrogen peroxide, nitrites, and oxidizable pharmaceutical substrates in compendial assay protocols.

Safety & Hazards (Specific Target Organ Toxicity, Aquatic Hazard & Skin/Eye Irritant)

Classification: May cause damage to organs (Central nervous system, brain) through prolonged or repeated exposure (Specific Target Organ Toxicity – Repeated Exposure Category 2). Toxic to aquatic life with long lasting effects (Aquatic Chronic Category 2). Causes mild skin and serious eye irritation.
Health Risks: Direct ocular contact triggers acute chemical stinging, conjunctival erythema, corneal irritation, lacrimation, and brown staining of ocular membranes. Prolonged dermal contact causes localized irritation, stinging, superficial dryness, and stubborn dark brown manganese dioxide stains on the epidermis. Inhalation of airborne mists irritates the mucous membranes of the respiratory tract, provoking coughing, sneezing, and throat discomfort. Critical Chronic Cumulative Risk: Prolonged or repeated systemic exposure to bioavailable manganese compounds may induce neurotoxicity resembling Parkinson’s disease (manganism), characterized by tremors, rigidity, and psychomotor impairment. Ingestion produces chemical irritation of the gastrointestinal tract, burning sensations in the mouth and throat, nausea, vomiting, and abdominal pain.
First Aid Measures: Immediately flush affected eyes with an abundant stream of clean flowing water for at least 15 minutes while stripping contaminated clothing; remove contact lenses promptly and seek medical attention if irritation persists. Wash exposed skin thoroughly with soap and water (stubborn brown stains can be reduced and cleared using dilute ascorbic acid or oxalic acid solution). In case of mist inhalation, relocate the individual to fresh air. If accidentally swallowed, do NOT induce vomiting; thoroughly rinse mouth, administer moderate quantities of fresh water to dilute, and seek prompt medical advice.

Handling & Storage

Storage: Light-Sensitive, Strong Oxidizing Standard Titrant. Direct sunlight, ambient heat, and organic matter induce rapid titer degradation and manganese dioxide precipitation. Must be preserved in its original, tightly closed QReC amber glass bottle. Store in a clean, strictly dry, cool, and well-ventilated dedicated chemical store at controlled temperatures (between 15 and 25 degrees Celsius), sheltered from direct solar radiation and heat sources. Keep strictly segregated from strong reducing agents, flammable organic solvents, concentrated hydrochloric acid (reaction instantaneously liberates hazardous, suffocating chlorine gas), ammonium salts, and hydrogen peroxide.
Precautions: Standard laboratory PPE is mandatory, including protective nitrile gloves, splash-proof safety goggles, and a protective lab coat. “Technical Recommendation: Deliver permanganate solutions using an amber glass burette or an opaque jacketed burette to shield the titrant from actinic light during titration, and avoid grease or rubber fittings that can reduce the titrant.” Re-seal container cap tightly immediately after dispensing. Never discharge concentrated permanganate solutions directly into municipal wastewater systems.