2022-04-09. Create. 2005-08-08. Agent Orange is de name for a synthetic defoliant developed for military use. Agent Orange is a mixture of two chemicals, 2,4, dichlorophenoxyacetic acid ( 2,4-D) and 2,4,5 trichlorophenoxyacetic acid ( 2,4,5-T ). The toxicity of Agent Orange is due to by-products from metabolic processes upon intake.