Agent Name

Dichlorprop

CAS Number

120-36-5

Formula

C9-H8-Cl2-O3

Major Category

Pesticides

Synonyms

(+-)-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

Category

Herbicides, Chlorophenoxy

Description

Colorless to yellowish odorless solid; [ICSC] Colorless, white, or brown solid; [HSDB] Light brown powder; [MSDSonline]

Sources/Uses

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]

Comments

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."

Restricted

No longer registered as a pesticide for use in the US; [HSDB]

Exposure Assessment
Vapor Pressure

7.5E-8 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
Hepatotoxin

Hepatotoxin, Secondary

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Biomedical References

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Processes

Industrial Processes with risk of exposure: