Agent Name
CAS Number
Major Category
Dichlorprop formula graphical representation
(+-)-2,4-DP; (+-)-2-(2,4-Dichlorophenoxy)propanoic acid; (+-)-2-(2,4-Dichlorophenoxy)propionic acid; (+-)-Dichlorprop; 2,4-DP; 2,4-Dichlorophenoxy-alpha-propionic acid; 2-(2,4-Dichloor-fenoxy)-propionzuur [Dutch]; 2-(2,4-Dichlor-phenoxy)-propionsaeure [German]; 2-(2,4-Dichlorophenoxy) propionic acid; 2-(2,4-Dichlorophenoxy)propanoic acid; 2-(2,4-Dichlorophenoxy)propionic acid; 2-(2,4-DP); AF 302; Acide 2-(2,4-dichloro-phenoxy) propionique [French]; Acido 2-(2,4-dicloro-fenossi)-propionico [Italian]; BH 2,4-DP; Basagran DP; Canapur DP; Celatox-DP; Cornox RK; Cornox RK 64; Cornox RK extra concentrate; Cornoxynil; Desormone; Dichloroprop; Dikofag DP; Envert 171; Hedonal DP; Herbizid DP; Hormatox; Kildip; Kwas 2,4-dwuchlorofenoksypropionowy [Polish]; Kyselina 2-(2,4-dichlorfenoxy)propionova [Czech]; Mayclene; Oxytril P; Polyclene; Polymone; Polytox; Propanoic acid, 2-(2,4-dichlorophenoxy)-; Propionic acid, 2-(2,4-dichlorophenoxy)-; RD 406; Seritox 50; Textrone M; Tri-cornox special; U 46 DP Fluid; U46 DP-Fluid; Ustilan NK25; Weedone 170; Weedone 2,4-DP; Weedone DP; alpha-(2,4-Dichlorophenoxy) propionic acid; [ChemIDplus] UN2765
Herbicides, Chlorophenoxy
Colorless to yellowish odorless solid; [ICSC] Colorless, white, or brown solid; [HSDB] Light brown powder; [MSDSonline]
Used as post-emergence herbicide for control of annual and perennial broad-leaved weeds in cereals, turf, rangeland, public easements, aquatic areas, and other non-crop land; Also used to prevent premature fruit drop in apples; [HSDB]
Decomposed by heat or fire forming toxic and corrosive gases such as phosgene and hydrogen chloride; Can be absorbed through skin; No listed effects of short-term or long-term exposure; May contain carcinogenic impurities; [ICSC] Dichlorprop (racemic mixture) has been replaced commercially by Dichlorprop-p or 2,4-DP-p which contains only the herbicidally active R-isomer (15165-67-0); [HSDB] A skin irritant; May cause serious eye injury; [eChemPortal: ESIS] Chlorophenoxy herbicides are possible human carcinogens; [IARC] Not carcinogenic in rats at up to dietary levels that induce overt toxicity; Not teratogenic at the non-maternotoxic doses tested; No reproductive toxicity identified; [ToxPlanet:CPS&Q: IUCLID] See "Dichlorprop-P."
No longer registered as a pesticide for use in the US; [HSDB]
Biomedical References

Exposure Assessment

Vapor Pressure
7.5E-08 mm Hg
Lethal Concentration
LC (rat) > 1,600 mg/m3
Explanatory Notes
The Guide in the Emergency Response Guidebook is for "Phenoxy pesticide, solid, toxic."

Adverse Effects

Hepatoxic (a) from occupational exposure (secondary effect) or (b) in animal studies or in humans after ingestion

Diseases, Processes, and Activities Linked to This Agent


Industrial Processes with risk of exposure: