Diphenylaminesulfonic acid sodium salt is widely used as an antioxidant and stabilizer in various industrial applications. In the rubber industry, it helps prevent the degradation of rubber products by inhibiting oxidation, thereby extending their lifespan. It is also employed in the production of synthetic polymers to enhance their stability during processing and storage. Additionally, this compound finds use in the formulation of lubricants, where it acts as an additive to reduce oxidation and improve performance. In the field of analytical chemistry, it serves as a reagent for the detection and quantification of certain metals and compounds. Its ability to act as a stabilizer makes it valuable in the preservation of dyes and pigments, ensuring their color integrity over time.