Sodium thiosulfate as an analysis titrant is widely used in various analytical chemistry applications. It is particularly valuable in iodometric titrations, where it serves as a reducing agent to determine the concentration of oxidizing agents such as iodine. This method is commonly applied in water quality testing to measure the levels of chlorine or other disinfectants. Additionally, it is used in the pharmaceutical industry to assay substances like potassium iodate and hydrogen peroxide. In environmental analysis, sodium thiosulfate helps quantify pollutants such as ozone or hypochlorite in air and water samples. Its ability to provide accurate and reliable results makes it a preferred choice in quantitative chemical analysis.