Agent Name

Chloroxuron

CAS Number

1982-47-4

Formula

C15-H15-Cl-N2-O2

Major Category

Pesticides

Synonyms

1-(4-(4-Chloro-phenoxy)phenyl)-3,3'-methyluree [French]; 1-(4-(4-Chloro-phenoxy)phenyl)-3,3-d'methyluree [French]; 3-(4-(4-Chloor-fenoxy)-fenoxy)-fenyl-1,1-dimethylureum [Dutch]; 3-(4-(4-Chloor-fenoxy)-fenyl)-1,1-dimethylureum [Dutch]; 3-(4-(4-Chlor-phenoxy)-phenyl)-1,1-dimethylharnstoff [German]; 3-(4-(4-Chloro-fenossil)fenil)-1,1-dimetil-urea [Italian]; 3-(4-(4-Chlorophenoxy)phenyl)-1,1-dimethylurea; 3-(4-(4-Cloro-fenossil)-fenossil)-1,1-dimetil-urea [Italian]; 3-(p-(p-Chlorophenoxy)phenyl)-1,1-dimethylurea; C 1983; C-1933; Chloroxifenidim; Chlorphencarb; Ciba 1983; Gesamoos; N'-4-(4-Chlorophenoxy)phenyl-N,N-dimethylurea; Norex; Tenoran; Urea, 3-(p-(p-chlorophenoxy)phenyl)-1,1-dimethyl-; Urea, N'-(4-(4-chlorophenoxy)phenyl)-N,N-dimethyl-; [ChemIDplus]

Category

Herbicides, Urea Derivative

Description

Colorless or white odorless solid; [HSDB] Colorless solid; [MSDSonline]

Sources/Uses

Formerly used as a pre- and post-emergence herbicide for control of annual broad-leaved weeds and some grasses in soy beans, deciduous fruits, vegetables, strawberries, conifers, and other crops; Also used to control mosses in turf, non-crop land, and greenhouses; Discontinued by Ciba-Geigy Ltd. sometime before 1994; [HSDB]

Comments

Urea-derived herbicides have low toxicity in animal feeding studies; May induce methemoglobinemia; [HSDB] Systemic toxicity unlikely unless large amounts ingested; [EPA Pesticides, p. 122] Forms dimethylnitrosamine (carcinogen) under certain conditions; May cause eye, mucous membrane, and respiratory tract irritation; May cause methemoglobinemia and CNS depression; [CAMEO] May cause irritation; [MSDSonline]

Exposure Assessment
Vapor Pressure

3.9E-9 mm Hg

Lethal Concentration

LC50 (rat) > 1,350 mg/m3/6h

Adverse Effects
Methemoglobinemia

Methemoglobinemia, Secondary

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