2,4-dichlorophenoxyacetic acid is a white to yellow powder, slightly soluble in water. 2,4-Dichlorophenoxyacetic acid is a common systemic herbicide used in the control of broadleaf weeds. It is the most widely used herbicide in the world and allowed for greatly enhanced weed control in wheat, corn, rice, and similar cereal grass crop, because it only kills dicots, leaving behind monocots. 2,4-Dichlorophenoxyacetic acid is a synthetic auxin, which is a class of plant growth regulators.
2,4-dichlorophenoxyacetic acid is produced from monochloroacetic acid and 2,4-dichlorophenol, which is itself produced by chlorination of phenol. The production process creates several contaminants including isomers, monochlorophenol, and other polychorophenols and their acids.
Weed control in lawns;
Control of weeds and brush along fences and highway and railroad rights of way;
control of broadleaf trees in conifer plantings;
a number of herbicide products contain 2,4-D as an active ingredient;