Tebuthiuron (Ref: EL 103) |
![]() Last updated: 27/11/2019 |
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(Not known by any other names) |
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A herbicide used to control a broad range of herbaceous, woody, annual and perennial weeds in non-cropland areas, rights-of-way, and industrial sites | |
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Bluegrass; Chickweed; Clover; Docks; Virginia creeper; Whitethorn; Eastern cottonwood; Chamise; Blackberry; Black higory; Bitternut hickory | |
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Non-crop areas such as paths; roads, right-of-way, industrial sites | |
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Current | |
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1975, Brazil |
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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Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Also used in |
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Australia, USA |
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Chemical structure |
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C₉H₁₆N₄OS | |
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CC(C)(C)C1=NN=C(S1)N(C)C(=O)NC | |
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No data | |
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HBPDKDSFLXWOAE-UHFFFAOYSA-N | |
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InChI=1S/C9H16N4OS/c1-9(2,3)6-11-12-8(15-6)13(5)7(14)10-4/h1-5H3,(H,10,14) | |
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Yes |
General status |
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Herbicide | |
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Urea | |
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Synthetic | |
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Systemic, low selectivity, absorbed by roots and translocated. Inhibits photosynthesis (photosystem II). | |
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34014-18-1 | |
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251-793-7 | |
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8321 | |
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105501 | |
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5383 | |
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228.31 | |
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N-(5-tert-butyl-1,3,4-thiadiazol-2-yl)-N,N'-dimethylurea | |
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1-(5-tert-butyl-1,3,4-thiadiazol-2-yl)-1,3-dimethylurea | |
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N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]-N,N'-dimethylurea | |
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Potential groundwater contaminant | |
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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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Off-white to buff coloured crystalline solid |
Formulations |
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Usually supplied as wettable powders, granules or pellets |
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2500 | G4 G = Extension Toxicology network database EXTOXNET (click here ) 4 = Verified data |
High | ||||||||
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3700 | L3 L = Pesticide manuals and hard copy reference books / other sources Benzene3 = Unverified data of known source |
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6100 | L3 L = Pesticide manuals and hard copy reference books / other sources Hexane3 = Unverified data of known source |
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70000 | L3 L = Pesticide manuals and hard copy reference books / other sources Acetone3 = Unverified data of known source |
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170000 | L3 L = Pesticide manuals and hard copy reference books / other sources Methanol3 = Unverified data of known source |
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162.9 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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Decomposes before boiling | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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275 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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6.17 X 1001 | Calculated | - | |||||||
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1.79 | G4 G = Extension Toxicology network database EXTOXNET (click here ) 4 = Verified data |
Low | ||||||||
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1.19 | Q2 Q = Miscellaneous internet resources 2 = Unverified data of unknown source |
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0.27 | G4 G = Extension Toxicology network database EXTOXNET (click here ) 4 = Verified data |
Low volatility | ||||||||
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2.47 X 10-05 | 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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400 | G4 G = Extension Toxicology network database EXTOXNET (click here ) 4 = Verified data |
Very persistent | |||||||
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360 | 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 |
Persistent | ||||||||
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General literature data. Other sources: 1300 days at 25 °C (R3) | ||||||||||
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64 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Moderately persistent | |||||||
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Not sensitive to pH | ||||||||||
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Soil adsorption and mobility |
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- | 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 |
Moderately mobile | |||||||
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80 | ||||||||||
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Other data: Log Koc 2.1 at 25 °C (R3) | ||||||||||
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Fate indices |
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5.36 | Calculated | High leachability | ||||||||||||||||||||||||||
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8.52 X 1000 | Calculated | - | |||||||||||||||||||||||||
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Medium | Calculated | - | ||||||||||||||||||||||||||
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Moderately mobile | Calculated | - |
Other known metabolites |
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N-(5-[1,1-dimethylethyl]-1,3,4-thiadazol-2-yl)-N'-(hydroxymethyl)-N-methyl urea | - | - | - | - |
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2.6 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Whole fish4 = Verified data |
Low potential | |||||||
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Not available | - | |||||||||
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644 | G4 G = Extension Toxicology network database EXTOXNET (click here ) Rat4 = Verified data |
Moderate | ||||||||
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- | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
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800 | - | |||||||||
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> 2500 | G4 G = Extension Toxicology network database EXTOXNET (click here ) Anas platyrhynchos4 = Verified data |
Low | ||||||||
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> 87 | G4 G = Extension Toxicology network database EXTOXNET (click here ) Oncorhynchus mykiss4 = Verified data |
Moderate | ||||||||
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9.3 | P3 P = Other governments and regulators Pimephales promelas growth3 = Unverified data of known source |
Moderate | ||||||||
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> 225 | G4 G = Extension Toxicology network database EXTOXNET (click here ) Daphnia magna4 = Verified data |
Low | ||||||||
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> 0.135 | F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Lemna gibba3 = Unverified data of known source |
Moderate | ||||||||
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0.05 | L3 L = Pesticide manuals and hard copy reference books / other sources Raphidocelis subcapitata3 = Unverified data of known source |
Moderate | ||||||||
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> 30 | G4 G = Extension Toxicology network database EXTOXNET (click here ) 4 = Verified data |
Moderate | |||||||
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> 690 | E3 E = Manufacturers safety data sheets in silicon media3 = Unverified data of known source |
Moderate | ||||||||
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General |
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High (class III) | - | - | ||||||||
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644 | G4 G = Extension Toxicology network database EXTOXNET (click here ) Rat4 = Verified data |
Moderate | ||||||||
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5000 | L3 L = Pesticide manuals and hard copy reference books / other sources Rabbit3 = Unverified data of known source |
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3.7 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
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0.07 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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Health issues |
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Moderately toxic Blood, liver, pancreas and kidney toxicant |
Handling issues |
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No information available | |||
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Health: H302 Environment: H400, H410 |
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Xn - Harmful: R22 N - Dangerous for the environment: R50, R53 |
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S2, S37, S60, S61 | |||
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II (Moderately hazardous) | |||
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tebuthiuron | ||
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tebuthiuron | ||
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Tebuthiuron | ||
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tebuthiuron | ||
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tebutiuron | ||
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tebutiuron | ||
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tebutiuron | ||
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Record last updated: | 27/11/2019 |
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 |