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2,4-D (2,4-dichlorophenoxy) is a systemic phenoxy herbicide developed in the 1940s and still in use today. 2,4-D was the first widely used herbicide used to control broadleaf plants, and it has significantly contributed to modern weed control in agriculture.
6 Νοε 1981 · The levels of PCDDs found in 26 2,4-D amine salt samples and 21 2,4-D ester samples are given in Tables I and II. These results represent dioxin contamination of 2,4-D technical and formulated products as was available in the Canadian market- place in 1980.
Three seaweed species, Ulva sp., Enteromorpha sp., and Rhodymenia sp., exposed to 25 ppb of 2,4-D had a measured uptake of 0.01–0.03% after 24 hours of exposure (Sikka et al. 1976).
2,4-D (2,4,-dichlorophenoxyacetic acid) is a selective broadleaf chlorphenoxy Group 1 herbicide that has been registered for use in Australia since the 1960s. It works by disrupting the actions of the plant growth hormone
2,4-D (2,4-Dichlorophenoxy Acetic Acid) K.D. Chadwick, R.S. Mangipudy, in Encyclopedia of Toxicology (Third Edition), 2014. Exposure. 2,4-D may be encountered as a vapor, as a liquid, or in mixtures. It may cause damage at the point of contact (skin, eyes, lungs, or gastrointestinal tract (GI tract)).
Dicamba, 2,4-D, and 2,4,5-T are selective pre- and post-emergent acid herbicides. Primarily effective for the control of woody plants and broadleaf weeds, they have been widely used throughout the world in areas such as pastures, forests, along railways, fencerows, roadways, and residential lawns.
A survey of "dioxin" content in 2,4-D has shown that the manufacturing process for 2,4-D in itself obviates the likelihood of the formation of "tetra, hexa and octadioxin" but it does not rule out the occurrence of other impurities.
