Monuron |
![]() Last updated: 04/01/2021 |
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(Also known as: chlorfenidim; CMU) |
SUMMARY |
Monuron is an obsolete herbicide. Moderately toxic to humans and a suspected carcinogen. Moderately soluble in water, volatile, persistent in soil and has a high potential to leach into groundwater. Moderately toxic to wildlife but expected to be safe for honeybees. |
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A herbicide used to control a wide range of annual and perennial broad-leaved weeds and grasses | |
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Soil sterilant; Annual and perennial grasses; Broad-leaf weeds | |
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Non-cropped areas; Aspargus; Cotton; Ornamental shrubs; Sugar beet | |
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Obsolete | |
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circa 1952 |
UK regulatory status |
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Not approved | ||
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Expired | ||
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No UK approval for use |
EC Regulation 1107/2009 (repealing 91/414) |
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Not approved | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Also used in |
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Chemical structure |
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C₉H₁₁CIN₂O | |
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CN(C)C(=O)NC1=CC=C(C=C1)Cl | |
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No data | |
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BMLIZLVNXIYGCK-UHFFFAOYSA-N | |
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InChI=1S/C9H11ClN2O/c1-12(2)9(13)11-8-5-3-7(10)4-6-8/h3-6H,1-2H3,(H,11,13) | |
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Yes |
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Common Name | Relationship | Link |
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monuron | - | ![]() |
General status |
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Herbicide | |
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Phenylurea | |
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Synthetic | |
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Non-selective, systemic which inhibits photosynthesis | |
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150-68-5 | |
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205-766-1 | |
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99 | |
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035501 | |
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8800 | |
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198.65 | |
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N-(4-chlorophenyl)-N,N-dimethylurea | |
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3-(4-chlorophenyl)-1,1-dimethylurea | |
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N'-(4-chlorophenyl)-N,N-dimethylurea | |
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Chemical subject to PIC regulations; Potential groundwater contaminant | |
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C2 | |
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5 | |
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Not applicable | |
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Not applicable | |
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Solid |
Formulations |
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Usually supplied as a wettable powder |
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230 | H4 H = The US ARS pesticide properties database (click here ) 4 = Verified data |
Moderate | ||||||||
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6.17 X 1001 | Calculated | - | |||||||
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1.79 | H4 H = The US ARS pesticide properties database (click here ) 4 = Verified data |
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0.067 | H4 H = The US ARS pesticide properties database (click here ) 4 = Verified data |
Low volatility | ||||||||
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5.80 X 10-05 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) 3 = Unverified data of known source |
Non-volatile | ||||||||
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Degradation |
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170 | M4 M = GLEAMS Model database (Groundwater Loading Effects of Agricultural Management Systems) (click here ) 4 = Verified data |
Persistent | |||||||
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Best available data | ||||||||||
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Soil adsorption and mobility |
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- | H4 H = The US ARS pesticide properties database (click here ) 4 = Verified data |
Moderately mobile | |||||||
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Best available data | ||||||||||
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Fate indices |
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4.07 | Calculated | High leachability | ||||||||||||||||||||||||||
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1.44 X 1000 | Calculated | - | |||||||||||||||||||||||||
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Medium | Calculated | - | ||||||||||||||||||||||||||
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Moderately mobile | Calculated | - |
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75 | Q2 Q = Miscellaneous internet resources Estimated2 = Unverified data of unknown source |
Low potential | |||||||
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Not available | - | |||||||||
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> 1053 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) Rat3 = Unverified data of known source |
Moderate | ||||||||
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> 5000 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Anas platyrhynchos4 = Verified data |
Low | ||||||||
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> 100 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Lepomis macrochirus4 = Verified data |
Low | ||||||||
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> 106 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Daphnia magna4 = Verified data |
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> 0.02 | P3 P = Other governments and regulators Pseudokirchneriella subcapitata3 = Unverified data of known source |
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> 63 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Dunaliella tertiolecta4 = Verified data |
Low | ||||||||
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> 110 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) 4 = Verified data |
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General |
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High (class III) | - | - | ||||||||
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> 1053 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) Rat3 = Unverified data of known source |
Moderate | ||||||||
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Health issues |
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Harmful if swallowed IARC Group 3 carcinogen |
Handling issues |
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No information available | |||
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Health: H302, H351 Environment: H400, H410 |
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Carcinogen category 3: R40 Xn - Harmful: R22 N - Dangerous for the environment: R50, R53 |
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S2, S36/37, S60, S61 | |||
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O (Obsolete substance) | |||
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monuron | ||
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monuron | ||
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Monuron | ||
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monuron | ||
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monuron | ||
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monuron | ||
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monuron | ||
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monuron | ||
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monuron |
Record last updated: | 04/01/2021 |
Contact: | aeru@herts.ac.uk |
Please cite as: | Lewis, K.A., Tzilivakis, J., Warner, D. and Green, A. (2016) An international database for pesticide risk assessments and management. Human and Ecological Risk Assessment: An International Journal, 22(4), 1050-1064. DOI: 10.1080/10807039.2015.1133242 |