Used primarily in the determination of phenolic content in various substances, this reagent is essential in assessing antioxidant capacity. It is widely applied in food science to measure the total phenolic compounds in fruits, vegetables, and beverages, helping to evaluate nutritional quality. In pharmaceutical research, it aids in analyzing plant extracts for their medicinal properties. Additionally, it plays a role in environmental studies by detecting phenolic pollutants in water samples. Its versatility makes it a valuable tool in quality control and research across multiple industries.