Applications
Diphenylamine is employed as harvest scald inhibitor for apples indoor drench treatments due to its antioxidant property. Alkyl derivatives of diphenylamine are used as anti-ozonants in the rubber manufacturing. It is used as lubricants and acts as a stabilizer for plastics. In the analytical chemistry, it is used to test the nitrate ion in association with ammonium chloride in sulfuric acid.

Solubility
Soluble in ethanol, acetone, benzene, carbon tetrachloride, pyridine and ethyl acetate. Slightly soluble in chloroform.

Notes
Incompatible with strong acids, strong oxidizing agents. Keep the container tightly closed in a cool and well-ventilated area.