2, 4 - Dichlorophenoxyacetic Acid (2,4-d): Environmental Aspects - Environmental Health Criteria 84

2,4-D is a selective herbicide which kills broad-leaved plants but not grasses or conifers. Its chemical structure is a modification of a naturally occurring plant hormone. 2,4-D is available as the free acid but is used, in agriculture and forestry, in formulations as a salt or ester.