Chlorimuron-ethyl (Ref: DPX F6025) |
![]() Last updated: 04/01/2021 |
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(Also known as: chlorimuron ethyl ester; HSDB 6850) |
SUMMARY |
Chlorimuron-ethyl is a post-emergence, foliar applied herbicide without EU regulatory approval for use. It has a high aqueous solubility, is non-volatile and, based on its chemical properties, is mobile and can be expected to leach to groundwater. It can be moderately persistent in soil systems but will not usually persist in aquatic systems. It is generally susceptible to hydrolysis. It has a low mammalian toxicity and has a high potential to bioaccumulate. It is relatively non- toxic to most aquatic species, birds and earthworms but moderately toxic to honey bees. |
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Post-emergence, foliar applied herbicide used to control broad-leaved weeds in a range of crops including peanuts and soya beans. | |
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Ragweed; Pigweed; Velvetleaf; Dandelion; Yellow nutsedge; Bittercress; Deadnettle; Lambsquarters; Thistles; Pennycress | |
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Soybeans; Peanuts | |
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- | |
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Unknown | |
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1986 |
UK regulatory status |
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Not approved | ||
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Not applicable | ||
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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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Not applicable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Not applicable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Not applicable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Also used in |
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Chemical structure |
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C₁₅H₁₅ClN₄O₆S | |
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CCOC(=O)C1=CC=CC=C1S(=O)(=O)NC(=O)NC2=NC(=CC(=N2)Cl)OC | |
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No data | |
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NSWAMPCUPHPTTC-UHFFFAOYSA-N | |
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InChI=1S/C15H15ClN4O6S/c1-3-26-13(21)9-6-4-5-7-10(9)27(23,24)20-15(22)19-14-17-11(16)8-12(18-14)25-2/h4-8H,3H2,1-2H3,(H2,17,18,19,20,22) | |
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Yes |
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Common Name | Relationship | Link |
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chlorimuron-ethyl | - | ![]() |
General status |
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Herbicide | |
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Sulfonylurea | |
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95% | |
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- | |
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Synthetic | |
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Inhibits plant amino acid synthesis - acetohydroxyacid synthase AHAS | |
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90982-32-4 | |
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- | |
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None allocated | |
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128901 | |
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56160 | |
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414.82 | |
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ethyl 2-{[(4-chloro-6-methoxypyrimidin-2-yl)carbamoyl]sulfamoyl}benzoate | |
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ethyl 2-(4-chloro-6-methoxypyrimidin-2-ylcarbamoylsulfamoyl)benzoate | |
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ethyl 2-[[[[(4-chloro-6-methoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]benzoate | |
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- | |
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B | |
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2 | |
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Not applicable | |
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Not applicable | |
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Amaranthus hybridus, Amaranthus powellii | |
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Colourless to off-white crystals | |
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Formulations |
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Usually supplied as a flowable dry powder and used as an aqueous spray post-emergence |
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1200 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
High | ||||||||
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70500 | H3 H = The US ARS pesticide properties database (click here ) Acetone3 = Unverified data of known source |
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8150 | H3 H = The US ARS pesticide properties database (click here ) Benzene3 = Unverified data of known source |
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60 | H3 H = The US ARS pesticide properties database (click here ) n-Hexane3 = Unverified data of known source |
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2830 | H3 H = The US ARS pesticide properties database (click here ) Xylene3 = Unverified data of known source |
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181 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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1.29 X 1000 | Calculated | - | |||||||
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0.11 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Low | ||||||||
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1.51 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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4.2 | DW4 DW = Don Wauchope personal database for Pka data: Wauchope, R. D. and Edwards, J. Dissociation constants for pesticide active ingredients: a database and comparison with predicted values. MS in preparation 4 = Verified data |
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Weak acid | |||||||||||
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4.9 X 10-07 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Low volatility | ||||||||
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1.7 X 10-10 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Non-volatile | ||||||||
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Degradation |
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40 | F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) 3 = Unverified data of known source |
Moderately persistent | |||||||
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28 | R4 R = Peer reviewed scientific publications 4 = Verified data |
Non-persistent | ||||||||
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Literature studies give field DT₅₀ 14-42 days; Degradation takes longer at higher pH. | ||||||||||
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4.7 | R3 R = Peer reviewed scientific publications 3 = Unverified data of known source |
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Wheat straw, n=1 | ||||||||||
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21 | L2 L = Pesticide manuals and hard copy reference books / other sources 2 = Unverified data of unknown source |
Non-persistent | |||||||
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Soil adsorption and mobility |
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- | R4 R = Peer reviewed scientific publications 4 = Verified data |
Moderately mobile | |||||||
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106 | ||||||||||
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Fate indices |
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2.86 | Calculated | High leachability | ||||||||||||||||||||||||||
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2.15 X 10-01 | Calculated | - | |||||||||||||||||||||||||
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Low | Calculated | - | ||||||||||||||||||||||||||
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Moderately mobile | Calculated | - |
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Low risk | Q3 Q = Miscellaneous internet resources Based on LogP < 33 = Unverified data of known source |
Low risk | |||||||
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> 4102 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
Low | ||||||||
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- | L3 L = Pesticide manuals and hard copy reference books / other sources Dog3 = Unverified data of known source |
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250 | - | |||||||||
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> 5620 | 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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> 8.4 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Oncorhynchus mykiss4 = Verified data |
Moderate | ||||||||
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> 10 | 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 |
Moderate | ||||||||
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0.00045 | L3 L = Pesticide manuals and hard copy reference books / other sources Lemna gibba3 = Unverified data of known source |
High | ||||||||
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12.5 | 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 |
Moderate | |||||||
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4050 | L3 L = Pesticide manuals and hard copy reference books / other sources Eisenia foetida3 = Unverified data of known source |
Low | ||||||||
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General |
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High (class III) | - | - | ||||||||
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> 4102 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
Low | ||||||||
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2000 | L3 L = Pesticide manuals and hard copy reference books / other sources Rabbit3 = Unverified data of known source |
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> 5.0 | E3 E = Manufacturers safety data sheets Rat 4 hr3 = Unverified data of known source |
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0.02 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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Occupational exposure may occur through dermal contact | ||||||||||
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Health issues |
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Slightly toxic Possible liver toxicant |
Handling issues |
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Highly flammable | |||
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Handling: H225 Health: H319, H336 |
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Xi - Irritant: R36 H - Handling risks: R11, R67 |
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S2, S9, S26/59, S46 | |||
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III (Slightly hazardous) | |||
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chlorimuron-ethyl | ||
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clorimuron etil | ||
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chlorimuron etylowy | ||
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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 |