Simetryn |
![]() Last updated: 11/03/2021 |
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(Also known as: simetryne; cymetrin; gy-bon) |
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A triazine herbicide mainly used for broad-leaved weed and grass control in paddy rice and other crops | |
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Barnyardgrass; Crabgrass; Fescue | |
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Rice; Corn; Soybean; Cereals including wheat; Cotton; Peanuts | |
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Obsolete | |
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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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Also used in |
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Chemical structure |
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C₈H₁₅N₅S | |
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CCNC1=NC(=NC(=N1)SC)NCC | |
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No data | |
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MGLWZSOBALDPEK-UHFFFAOYSA-N | |
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InChI=1S/C8H15N5S/c1-4-9-6-11-7(10-5-2)13-8(12-6)14-3/h4-5H2,1-3H3,(H2,9,10,11,12,13) | |
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Yes |
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Common Name | Relationship | Link |
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simetryn | - | ![]() |
General status |
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Herbicide | |
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Triazine | |
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Synthetic | |
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Selective systemic, absorbed through roots and foliage, inhibits photosynthesis (photosystem II). | |
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1014-70-6 | |
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213-801-7 | |
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179 | |
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294300 | |
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13905 | |
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213.30 | |
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N2,N4-diethyl-6-(methylsulfanyl)-1,3,5-triazine-2,4-diamine | |
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N2,N4-diethyl-6-methylthio-1,3,5-triazine-2,4-diamine | |
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N,N'-diethyl-6-(methylthio)-1,3,5-triazine-2,4-diamine | |
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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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White crystalline powder |
Formulations |
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450 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) at 25 °C3 = Unverified data of known source |
Moderate | ||||||||
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400000 | Q3 Q = Miscellaneous internet resources Acetone3 = Unverified data of known source |
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380000 | Q3 Q = Miscellaneous internet resources Methanol3 = Unverified data of known source |
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300000 | Q3 Q = Miscellaneous internet resources Toluene3 = Unverified data of known source |
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4000 | Q3 Q = Miscellaneous internet resources Hexane3 = Unverified data of known source |
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82.5 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) 3 = Unverified data of known source |
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337 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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6.31 X 1002 | Calculated | - | |||||||
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2.8 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) 3 = Unverified data of known source |
Moderate | ||||||||
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1.02 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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4.0 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) 3 = Unverified data of known source |
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Weak acid | |||||||||||
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9.5 X 10-02 | E3 E = Manufacturers safety data sheets 3 = Unverified data of known source |
Low volatility | ||||||||
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5.07 X 10-05 | E3 E = Manufacturers safety data sheets 3 = Unverified data of known source |
Non-volatile | ||||||||
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Degradation |
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60 | 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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Soil adsorption and mobility |
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- | 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 mobile | |||||||
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200 | ||||||||||
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Fate indices |
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3.02 | Calculated | High leachability | ||||||||||||||||||||||||||
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3.17 X 10-01 | Calculated | - | |||||||||||||||||||||||||
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Medium | Calculated | - | ||||||||||||||||||||||||||
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Moderately mobile | Calculated | - |
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27.0 | R4 R = Peer reviewed scientific publications (whole body)4 = Verified data |
Low potential | |||||||
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Not available | - | |||||||||
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> 750 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) Rat3 = Unverified data of known source |
Moderate | ||||||||
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> 7.0 | 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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> 50.0 | 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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0.0098 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Anabaena flos-aquae4 = Verified data |
High | ||||||||
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General |
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High (class III) | - | - | ||||||||
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> 750 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) Rat3 = Unverified data of known source |
Moderate | ||||||||
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3100 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) Rat3 = Unverified data of known source |
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4.88 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) Rat3 = Unverified data of known source |
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Health issues |
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Slightly toxic |
Handling issues |
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IMDG Transport Code is usually 9 | |||
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Xn - Harmful: R22 N - Dangerous for the environment: R50, R53 |
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S2, S60, S61 | |||
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III (Slightly hazardous) | |||
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Usually 3077 | |||
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Packaging Group III (minor danger) |
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simetryn | ||
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simetryne | ||
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Simetryn | ||
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simetrina | ||
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simetrina | ||
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simetryn | ||
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simetryn | ||
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Record last updated: | 11/03/2021 |
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 |