Desmetryn (Ref: G 34360) |
![]() Last updated: 23/12/2020 |
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(Also known as: desmetryne; semeron) |
SUMMARY |
Desmetryn is a herbicide that is not approved for use in the EU. It has a high aqueous solubility and is volatile. Based on its chemical properties it is not expected to leach to groundwater. It is not usually persistent in soils but may persist in water under some conditions. Desmetryn is moderately toxic to mammals. It is moderately toxic to birds, most aquatic organisms and earthworms. It is relatively non-toxic to honeybees. |
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A methylthiotriazine herbicide used to control annual broad-leaved weeds and some grasses | |
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Fathen; Lambsquarter; Nettleweed; Nightshade; Pigweed | |
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Brassicas; Onions and leeks; Fodder rape | |
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Obsolete | |
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1962, frist reported |
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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Chemical structure |
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C₈H₁₅N₅S | |
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CC(C)NC1=NC(=NC(=N1)NC)SC | |
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No data | |
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HCRWJJJUKUVORR-UHFFFAOYSA-N | |
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InChI=1S/C8H15N5S/c1-5(2)10-7-11-6(9-3)12-8(13-7)14-4/h5H,1-4H3,(H2,9,10,11,12,13) | |
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Yes |
General status |
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Herbicide | |
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Methylthiotriazine | |
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>95% | |
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Synthetic | |
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Selective, absorbed by leaves and roots, photosynthetic electron transport inhibitor | |
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1014-69-3 | |
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213-800-1 | |
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147 | |
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080810 | |
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13904 | |
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213.30 | |
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N2-methyl-6-(methylsulfanyl)-N4-(propan-2-yl)-1,3,5-triazine-2,4-diamine | |
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N2-isopropyl-N4-methyl-6-methylthio-1,3,5-triazine-2,4-diamine | |
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N-methyl-N'-(1-methylethyl)-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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Usually supplied as a wettable powder |
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580 | K4 K = Research datasets, e.g. Pandora, Demetra 4 = Verified data |
High | ||||||||
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300000 | L3 L = Pesticide manuals and hard copy reference books / other sources Methanol3 = Unverified data of known source |
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230000 | L3 L = Pesticide manuals and hard copy reference books / other sources Acetone3 = Unverified data of known source |
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200000 | L3 L = Pesticide manuals and hard copy reference books / other sources Toluene3 = Unverified data of known source |
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2600 | L3 L = Pesticide manuals and hard copy reference books / other sources n-Hexane3 = Unverified data of known source |
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84 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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339 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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2.40 X 1002 | Calculated | - | |||||||
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2.38 | K4 K = Research datasets, e.g. Pandora, Demetra 4 = Verified data |
Low | ||||||||
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1.18 | Q2 Q = Miscellaneous internet resources 2 = Unverified data of unknown source |
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4 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) 3 = Unverified data of known source |
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Weak base | |||||||||||
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1.30 X 10-01 | K4 K = Research datasets, e.g. Pandora, Demetra 4 = Verified data |
Low volatility | ||||||||
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4.89 X 10-05 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) 3 = Unverified data of known source |
Non-volatile | ||||||||
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Degradation |
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9 | K4 K = Research datasets, e.g. Pandora, Demetra 4 = Verified data |
Non-persistent | |||||||
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9 | K4 K = Research datasets, e.g. Pandora, Demetra 4 = Verified data |
Non-persistent | ||||||||
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Other literature quotes DT₅₀ soil 50 days (L3) | ||||||||||
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Stable | W4 W = French database provided by ARVALIS-Institut du Végétal 4 = Verified data |
Stable | |||||||
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34 | 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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- | B3 B = UK CRD and ACP evaluation documents / and other Defra (UK) documents (click here ) 3 = Unverified data of known source |
Moderately mobile | |||||||
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150 | ||||||||||
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Fate indices |
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1.74 | Calculated | Low leachability | ||||||||||||||||||||||||||
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2.37 X 10-02 | Calculated | - | |||||||||||||||||||||||||
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Low | Calculated | - | ||||||||||||||||||||||||||
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Moderately mobile | Calculated | - |
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21 | Q2 Q = Miscellaneous internet resources Estimated2 = Unverified data of unknown source |
Low potential | |||||||
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Not available | - | |||||||||
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1390 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) Rat3 = Unverified data of known source |
Moderate | ||||||||
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> 10000 | L3 L = Pesticide manuals and hard copy reference books / other sources Coturnix japonica3 = Unverified data of known source |
Low | ||||||||
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2.2 | L3 L = Pesticide manuals and hard copy reference books / other sources Oncorhynchus mykiss3 = Unverified data of known source |
Moderate | ||||||||
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45 | K3 K = Research datasets, e.g. Pandora, Demetra Daphnia magna3 = Unverified data of known source |
Moderate | ||||||||
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0.025 | F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Ankistrodesmus falcatus3 = Unverified data of known source |
Moderate | ||||||||
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> 101 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Low | |||||||
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> 197 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Low | ||||||||
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160 | K4 K = Research datasets, e.g. Pandora, Demetra Ensenia foetida4 = Verified data |
Moderate | ||||||||
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Harmless | AA2 AA = IOBC Database on classification of side effects to beneficial organisms, 2005 Chrysoperla carnea2 = Unverified data of unknown source |
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General |
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High (class III) | - | - | ||||||||
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1390 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) Rat3 = Unverified data of known source |
Moderate | ||||||||
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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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Health issues |
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No further information available |
Handling issues |
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No information available | |||
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Health: H302, H312 Environment: H400, H410 |
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Xn - Harmful: R21/22 N - Dangerous for the environment: R50, R53 |
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S2, S36/37, S60, S61 | |||
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III (Slightly hazardous) | |||
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desmetryn | ||
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desmétryne | ||
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Desmetryn | ||
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desmetryn | ||
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desmetrina | ||
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desmetrina | ||
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desmetryn | ||
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desmetryna | ||
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desmetryn |
Record last updated: | 23/12/2020 |
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 |