Chlorbromuron (Ref: C6313) |
![]() Last updated: 22/12/2020 |
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(Also known as: chlorobromuron) |
SUMMARY |
Chorbromuron is an obsolete herbicide. It has a low aqueous solubility, low volatility and, under normal conditions, would not be expected to leach to groundwater. Whilst not usually persistent in water bodies it can be persistent in soils. It is not highly toxic to humans if ingested but there is a data gap regarding other health issues. There is also a gap in available ecotoxicity data but based on data does exist it tends to be moderately toxic. |
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An obsolete pre- and post-emergence herbicide once used for annual grass and for broad-leaved weeds on a wide variety of crops | |
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Foxtail; Crabgrass; Goosegrass; Chickweed | |
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Potaoes; Tobacco; Peanuts; Soybeans; Sunflowers; Flax; Corn; Potatoes; Cereals | |
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Obsolete | |
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circa 1967 |
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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Not applicable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Expired | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Also used in |
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Chemical structure |
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None | |
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C₉H₁₀BrClN₂O₂ | |
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CN(C(=O)NC1=CC(=C(C=C1)Br)Cl)OC | |
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No data | |
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NLYNUTMZTCLNOO-UHFFFAOYSA-N | |
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InChI=1S/C9H10BrClN2O2/c1-13(15-2)9(14)12-6-3-4-7(10)8(11)5-6/h3-5H,1-2H3,(H,12,14) | |
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Yes |
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Common Name | Relationship | Link |
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chlorbromuron | - | ![]() |
General status |
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Herbicide | |
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Urea | |
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Synthetic | |
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Photosynthetic electron transport inhibitor at the photosystem II. Sective, absorbed via roots and translocated | |
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13360-45-7 | |
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236-411-9 | |
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186 | |
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090701 | |
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25912 | |
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293.5 | |
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N'-(4-bromo-3-chlorophenyl)-N-methoxy-N-methylurea | |
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3-(4-bromo-3-chlorophenyl)-1-methoxy-1-methylurea | |
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N'-(4-bromo-3-chlorophenyl)-N-methoxy-N-methylurea | |
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Phytotoxic to a variety of crops post-emergence including rice, beet, tomatoes and strawberries | |
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C2 | |
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7 | |
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Not applicable | |
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Not applicable | |
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Colourless powder |
Formulations |
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Usually formulated as a wettable powder |
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35 | K4 K = Research datasets, e.g. Pandora, Demetra 4 = Verified data |
Low | ||||||||
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460000 | CA3 CA = Medical and toxicological databases and information systems e.g. TOXNET (click here ) Acetone3 = Unverified data of known source |
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170000 | CA3 CA = Medical and toxicological databases and information systems e.g. TOXNET (click here ) Dichloromethane3 = Unverified data of known source |
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89000 | CA3 CA = Medical and toxicological databases and information systems e.g. TOXNET (click here ) Hexane3 = Unverified data of known source |
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72000 | CA3 CA = Medical and toxicological databases and information systems e.g. TOXNET (click here ) Benzene3 = Unverified data of known source |
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96 | CA3 CA = Medical and toxicological databases and information systems e.g. TOXNET (click here ) 3 = Unverified data of known source |
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1.23 X 1003 | Calculated | - | |||||||
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3.09 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) 3 = Unverified data of known source |
High | ||||||||
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1.69 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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0.053 | K4 K = Research datasets, e.g. Pandora, Demetra 4 = Verified data |
Low volatility | ||||||||
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2.63 X 10-04 | H4 H = The US ARS pesticide properties database (click here ) 4 = Verified data |
Non-volatile | ||||||||
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Degradation |
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39 | K4 K = Research datasets, e.g. Pandora, Demetra 4 = Verified data |
Moderately persistent | |||||||
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40 | Q2 Q = Miscellaneous internet resources 2 = Unverified data of unknown source |
Moderately persistent | ||||||||
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36.5 | R4 R = Peer reviewed scientific publications 4 = Verified data |
Moderately persistent | ||||||||
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Best available data: persists for more than 8 days (CA2) | ||||||||||
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52 | K4 K = Research datasets, e.g. Pandora, Demetra 4 = Verified data |
Moderately fast | ||||||||
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Soil adsorption and mobility |
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- | H3 H = The US ARS pesticide properties database (click here ) 3 = Unverified data of known source |
Moderately mobile | |||||||
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470 | ||||||||||
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Other sources: Koc range 217 to 3262 mL g⁻¹ (R3) | ||||||||||
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Fate indices |
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2.07 | Calculated | Transition state | ||||||||||||||||||||||||||
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8.30 X 10-02 | Calculated | - | |||||||||||||||||||||||||
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Low | Calculated | - | ||||||||||||||||||||||||||
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Moderately mobile | Calculated | - |
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68 | Q3 Q = Miscellaneous internet resources (whole fish)3 = Unverified data of known source |
Low potential | |||||||
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Not available | - | |||||||||
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> 2150 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) Rat3 = Unverified data of known source |
Low | ||||||||
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> 10250 | L3 L = Pesticide manuals and hard copy reference books / other sources Anas platyrhynchos3 = Unverified data of known source |
Low | ||||||||
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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 ) Oncorhynchus mykiss4 = Verified data |
Moderate | ||||||||
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5.8 | K3 K = Research datasets, e.g. Pandora, Demetra Unknown species3 = Unverified data of known source |
Moderate | ||||||||
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0.017 | K2 K = Research datasets, e.g. Pandora, Demetra Unknown species2 = Unverified data of unknown source |
Moderate | ||||||||
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16 | K4 K = Research datasets, e.g. Pandora, Demetra 4 = Verified data |
Moderate | |||||||
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General |
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High (class III) | - | - | ||||||||
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> 2150 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) Rat3 = Unverified data of known source |
Low | ||||||||
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2000 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
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Consumers may be exposed through the ingestion of contaminated food | |||||||||
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Occupational exposure may be through inhalation or dermal contact | ||||||||||
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Health issues |
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Chronic exposure may cause protein metabolism disturbances, emphysema, and weight loss |
Handling issues |
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No information available | |||
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Health: H315, H319, H332 | |||
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Not classified: Obsolete | |||
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Not classified: Obsolete | |||
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O (Obsolete substance) | |||
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chlorbromuron | ||
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chlorbromuron | ||
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Chlorbromuron | ||
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chlorbromuron | ||
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clorbromuron | ||
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clorbromuron | ||
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chlorbromuron | ||
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chloorbromuron |
Record last updated: | 22/12/2020 |
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 |