- 2,4-D (2,4-dichlorophenoxyacetic acid) is a widely used phenoxyacetic acid herbicide employed for the control of broadleaf weeds in agriculture, turfgrass, and residential settings (EPA, 2026). Human exposure may occur through ingestion, inhalation, dermal absorption, or ocular contact. Delayed diagnosis and treatment are associated with poorer outcomes, emphasizing the need for a high index of clinical suspicion.
2,4-D is marketed as the acid form, amine salts, and esters. The Common 2,4-D amine salts include dimethylamine, diethanolamine, isopropylamine, and triisopropanolamine salts, which are produced by neutralizing 2,4-D acid with amines . . .
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