محلول تیوسولفات سدیم 0.1 نرمال

Sodium Thiosulphate Solution 0.1 N is a standardized aqueous solution of sodium thiosulphate (Na₂S₂O₃·5H₂O) with a normality of 0.1 N, prepared for analytical, laboratory, and pharmaceutical applications, particularly in redox titrations and assay procedures where precise reducing capacity is required.

🏭⚗️ Production
Sodium Thiosulphate Solution 0.1 N is prepared by dissolving high-purity sodium thiosulphate pentahydrate in distilled or deionized water, followed by careful standardization using a primary oxidizing standard such as potassium dichromate or iodine solution to achieve the desired normality at 25°C. The solution is stored in tightly sealed, dark-colored containers to prevent oxidation and decomposition over time.

🔬 Properties
The solution is a clear, colorless to pale yellow liquid that is highly soluble in water. It acts as a mild reducing agent and remains stable under normal laboratory conditions if protected from light, air, and contaminants. Sodium Thiosulphate Solution 0.1 N may gradually oxidize upon prolonged exposure to air or light, leading to a slight decrease in reducing power.

🧪 Applications
In laboratory and pharmaceutical settings, Sodium Thiosulphate Solution 0.1 N is widely used in iodometric titrations, determination of oxidizing agents, and standardization of halogen solutions. It is also employed in quality control procedures, pharmaceutical assays, and analytical methods where precise measurement of reducing equivalents is necessary.

⚠️ Safety
The solution is generally considered low in toxicity but can cause mild irritation to skin and eyes. Gloves and goggles should be worn during handling, and spills should be cleaned promptly. The solution should be stored in a cool, dry place, away from strong oxidizing agents and direct sunlight. Disposal must follow laboratory safety protocols and local environmental regulations.