Terbutryn (Ref: GS 14260) |
![]() Last updated: 05/07/2020 |
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(Also known as: terbutryne) |
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A pre-emergence herbicide used to control some grasses and broad-leaved weeds. Also used to control aquatic algae. Also a pesticide transformation product. | |
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Chickweed; Poppies; Blackgrass; Annual meadow grass; Deadnettle; Capeweed; Hedge mustard; Shepherd's purse; Bindweed; Lupins | |
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Cereals including wheat, barley, oats, triticale; Sorghum; Sugarcane; Sunflowers; Peas; potatoes | |
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Current | |
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1966 |
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 |
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Chemical structure |
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None | |
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C₁₀H₁₉N₅S | |
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CCNC1=NC(=NC(=N1)SC)NC(C)(C)C | |
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No data | |
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IROINLKCQGIITA-UHFFFAOYSA-N | |
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InChI=1S/C10H19N5S/c1-6-11-7-12-8(15-10(2,3)4)14-9(13-7)16-5/h6H2,1-5H3,(H2,11,12,13,14,15 | |
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Yes |
General status |
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Herbicide | |
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Triazine | |
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Synthetic | |
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Selective, absorbed through roots and foliage and translocated. Inhibits photosynthesis (photosystem II). | |
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886-50-0 | |
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212-950-5 | |
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212 | |
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080813 | |
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13450 | |
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241.36 | |
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N2-tert-butyl-N4-ethyl-6-(methylsulfanyl)-1,3,5-triazine-2,4-diamine | |
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N2-tert-butyl-N4-ethyl-6-methylthio-1,3,5-triazine-2,4-diamine | |
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N-(1,1-dimethylethyl)-N'-ethyl-6-(methylthio)-1,3,5-triazine-2,4-diamine | |
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Potential groundwater contaminant | |
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- | |
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C1 | |
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5 | |
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Not applicable | |
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Not applicable | |
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- | |
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White or colourless crystalline powder |
Formulations |
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Usually formulated as a suspension concentrate, granules or wettable powder |
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25 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
Low | ||||||||
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220000 | L3 L = Pesticide manuals and hard copy reference books / other sources Acetone3 = Unverified data of known source |
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9000 | L3 L = Pesticide manuals and hard copy reference books / other sources Hexane3 = Unverified data of known source |
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130000 | L3 L = Pesticide manuals and hard copy reference books / other sources n-Octanol3 = Unverified data of known source |
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220000 | L3 L = Pesticide manuals and hard copy reference books / other sources Methanol3 = Unverified data of known source |
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104 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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4.57 X 1003 | Calculated | - | |||||||
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3.66 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
High | ||||||||
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1.12 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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4.3 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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Weak base | |||||||||||
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0.13 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
Low volatility | ||||||||
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1.50 X 10-03 | 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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74 | K4 K = Research datasets, e.g. Pandora, Demetra 4 = Verified data |
Moderately persistent | |||||||
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74 | K4 K = Research datasets, e.g. Pandora, Demetra 4 = Verified data |
Moderately persistent | ||||||||
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52 | H4 H = The US ARS pesticide properties database (click here ) 4 = Verified data |
Moderately persistent | ||||||||
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Other sources: DT₅₀ 42 days (DW4); 14-50 days (Q3 lab aerobic) | ||||||||||
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0.5 | Q2 Q = Miscellaneous internet resources 2 = Unverified data of unknown source |
Fast | |||||||
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Stable | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
Stable | |||||||
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Stable pH 5 to pH 9 | ||||||||||
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60 | Q2 Q = Miscellaneous internet resources 2 = Unverified data of unknown source |
Moderately fast | ||||||||
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27 | K3 K = Research datasets, e.g. Pandora, Demetra 3 = Unverified data of known source |
Slow |
Soil adsorption and mobility |
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- | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
Slightly mobile | |||||||
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2432 | ||||||||||
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EU dossier, 2 values 2000 & 2863 mL g⁻¹ | ||||||||||
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30.7 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
Slightly mobile | |||||||
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518 | ||||||||||
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1.10 | ||||||||||
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EU dossier Kf range 4.3-109.9 mL g⁻¹, Kfoc range 392-605 mL g⁻¹, 1/n range 1.01-1.35, Soils=5 | ||||||||||
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Fate indices |
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2.21 | Calculated | Transition state | ||||||||||||||||||||||||||
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1.04 X 10-01 | Calculated | - | |||||||||||||||||||||||||
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Medium | Calculated | - | ||||||||||||||||||||||||||
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Slightly mobile | Calculated | - |
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72.4 | Q3 Q = Miscellaneous internet resources (Other literature Log BCF range 1.1-1.7 (R3))3 = Unverified data of known source |
Low potential | |||||||
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0.5 | - | |||||||||
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> 2500 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
Low | ||||||||
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- | L2 L = Pesticide manuals and hard copy reference books / other sources Rat 2 year2 = Unverified data of unknown source |
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300 | - | |||||||||
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> 4640 | L3 L = Pesticide manuals and hard copy reference books / other sources Anas platyrhynchos3 = Unverified data of known source |
Low | ||||||||
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> 1.1 | L3 L = Pesticide manuals and hard copy reference books / other sources Oncorhynchus mykiss3 = Unverified data of known source |
Moderate | ||||||||
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> 2.66 | L3 L = Pesticide manuals and hard copy reference books / other sources Daphnia magna3 = Unverified data of known source |
Moderate | ||||||||
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0.0024 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Pseudokirchneriella subcapitata4 = Verified data |
High | ||||||||
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0.0016 | P3 P = Other governments and regulators Chlorella fusca3 = Unverified data of known source |
Moderate | ||||||||
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> 225 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Low | |||||||
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> 170 | K4 K = Research datasets, e.g. Pandora, Demetra Eisenia foetida4 = Verified data |
Moderate | ||||||||
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General |
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High (class III) | - | - | ||||||||
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> 2500 | 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 Rat3 = Unverified data of known source |
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2.2 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
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0.027 | 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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USEPA - possible human carcinogen |
Handling issues |
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No information available | |||
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Health: H302, H317, H319, H332 Environment: H400, H410, H413 |
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N - Dangerous for the environment: R52/53 | |||
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S2, S29, S36/37, S46 | |||
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III (Slightly hazardous) | |||
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terbutryn | ||
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terbutryne | ||
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Terbutryn | ||
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terbutryn | ||
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terbutrina | ||
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terbutrina | ||
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terbutryn | ||
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terbutrin | ||
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Record last updated: | 05/07/2020 |
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 |