Potassium Dichromate Solution 0.25 N is a standardized aqueous solution with a normality of 0.25 N potassium dichromate (K₂Cr₂O₇) at 25°C, designed for use in redox titrations, laboratory analysis, pharmaceutical quality control, and calibration of electrochemical instruments.
🏭⚗️ Production
Potassium Dichromate Solution 0.25 N is prepared by accurately dissolving high‑purity potassium dichromate in distilled or deionized water and carefully standardized to achieve a normality of 0.25 N at 25°C. The solution is stored in tightly sealed, chemically compatible containers to prevent contamination and maintain long‑term stability.
🔬 Properties
The solution is an orange to red‑orange, clear aqueous liquid that is highly soluble in water. It is a strong oxidizing solution and remains stable under normal laboratory conditions but should be protected from reducing agents, organic contaminants, light, and extreme temperatures to preserve its concentration and oxidizing power.
🧪 Applications
In laboratory settings, Potassium Dichromate Solution 0.25 N is used as a primary or working oxidizing reagent in redox titrations, including determination of reducing agents and metals (e.g., iron), and for standardization of other oxidants or reductants. It is also used to calibrate redox electrodes and voltammetric systems. In pharmaceutical applications, the solution is employed for oxidative stability testing, assay methods that require controlled oxidation conditions, and quality control procedures to ensure product consistency and safety.
⚠️ Safety
The solution is hazardous and must be handled with extreme care. Potassium dichromate is a strong oxidizer and a toxic, carcinogenic, and sensitizing chromium(VI) compound. Contact with skin or eyes should be rinsed immediately with plenty of water and medical advice sought. Appropriate personal protective equipment (PPE) including chemical‑resistant gloves, goggles or face shield, lab coat, and work in a fume hood are required. The solution should be stored in tightly sealed, clearly labeled containers in a cool, dry place away from combustibles, organic materials, and reducing agents. Disposal must follow institutional safety protocols and local/regional hazardous waste regulations; do not dispose to drain.
