Agent Name

Monuron

CAS Number

150-68-5

Formula

C9-H11-Cl-N2-O

Major Category

Pesticides

Synonyms

1,1-Dimethyl-3-(p-chlorophenyl)thiourea; 1,1-Dimethyl-3-(p-chlorophenyl)urea; 1,1-Dimethyl-3-(para-chlorophenyl)urea; 1-(4-Chloro phenyl)-3,3-dimethyluree [French]; 1-(4-Chlorophenyl)-3,3-dimethylurea; 1-(p-Chlorophenyl)-3,3-dimethylurea; 1-para-Chlorophenyl-3,3-dimethylurea; 3-(4-Chloor-fenyl)-1,1-dimethylureum [Dutch]; 3-(4-Chlor-phenyl)-1,1-dimethyl-harnstoff [German]; 3-(4-Chlorophenyl)-1,1-dimethylurea; 3-(4-Cloro-fenil)-1,1-dimetil-urea; 3-(4-Cloro-fenil)-1,1-dimetil-urea [Italian]; 3-(p-Chlorophenyl)-1,1-dimethylurea; 3-para-Chlorophenyl-1,1-dimethylurea; CMU; CMU Weedkiller; CNV Weed Killer; Chlorea; Chlorfenidim; Herbicides, monuron; Karmex W; Karmex W. monuron herbicide; Karmex monuron herbicide; Lirobetarex; Monurex; Monuroun; Monurox; Monuruon; Monuuron; N'-(4-Chlorophenyl)-N,N-dimethylurea; N,N-Dimethyl-N'-(4-chlorophenyl)urea; N-(p-Chlorophenyl)-N',N'-dimethylurea; N-Dimethyl-N'-(4-chlorophenyl)urea; N-para-Chlorophenyl-N',N'-dimethylurea; Rosuran; Telvar; Telvar W. monuron weedkiller; Telvar monuron weedkiller; Urea, 3-(4-Chlorophenyl)-1,1-dimethyl-; Urea, 3-(p-chlorophenyl)-1,1-dimethyl-; Urea, N'-(4-chlorophenyl)-N,N-dimethyl- (9CI); [ChemIDplus]

Category

Herbicides, Urea Derivative

Description

White solid; [CAMEO]

Sources/Uses

Used as a herbicide on roadways, industrial lots, and drainage ditches; [HSDB] No ACTIVE registrants found for selected chemical. [NPIRS]

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] Causes anemia and methemoglobinemia in animal experiments; [Merck Index]

Restricted

As of July 1973, monuron is no longer registered for use on agricultural crops. [HSDB]

Exposure Assessment
Vapor Pressure

5.03E-7 mm Hg

Adverse Effects
Methemoglobinemia

Methemoglobinemia, Secondary

IARC Carcinogen

Not Classifiable

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Processes

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