Diphenylamine is widely used as a stabilizer in the production of explosives, particularly for nitrocellulose-based propellants. It helps prevent the decomposition of these materials, ensuring their long-term stability and safety. In the agricultural sector, it serves as an antioxidant in the storage of apples and pears, where it inhibits superficial scald, a disorder that affects the fruit's appearance during prolonged storage. Additionally, it is utilized in the rubber industry as an antioxidant and antiozonant, protecting rubber products from degradation caused by oxygen and ozone exposure. Diphenylamine is also employed in the synthesis of dyes and pharmaceuticals, where it acts as an intermediate in the production of various chemical compounds. Its antioxidant properties make it valuable in lubricants and greases, where it helps extend the lifespan of these products by preventing oxidation.