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Common NameSimetryn
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中文通用名西草净
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IUPACN2,N4-diethyl-6-methylthio-1,3,5-triazine-2,4-diamine
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CASN,N′-diethyl-6-(methylthio)-1,3,5-triazine-2,4-diamine
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CAS No.1014-70-6
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Molecular FormulaC8H15N5S
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Molecular Structure
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Category
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ActivityHerbicide
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PremixSimetryn+Pretilachlor
Pyrazosulfuron-ethyl+prometryn+simetryn
Oxadiazon+Simetryn
Molinate+simetryn+MCPA-ethyl
Mesotrione+Simetryn
Bensulfuron-methyl+simetryn
Bensulfuron-methyl+Prometryn+Simetryn
Premix Parters: bromacil diuron sodium metaborate; bromacil sodium metaborate; diuron sodium metaborate; prometon simazine sodium metaborate; sodium metaborate;
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Physical PropertiesMolecular weight:213.3; Physical form:Whitish crystals. Density:1.02; Melting point:82-83 °C; Vapour pressure:9.5 × 10-2 mPa (20 °C); Henry constant:5.07 × 10-5 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = 2.6 (calc., unionised); pKa:4.0, weak base; Solubility:In water 400 mg/l (20 °C). In methanol 380, acetone 400, toluene 300, n-hexane 4, n-octanol 160 (all in g/l, 20 °C).;
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ToxicologyOral:Acute oral LD50 for rats 750-1195 mg/kg. Percutaneous:Acute percutaneous LD50 for rats >3200 mg/kg. Not a skin or eye irritant (rabbits). ADI:0.005 mg/kg b.w.
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Environmental ProfileEcotoxicology:
Algae:Toxic.Bees:Non-toxic.Fish:LC50 (96 h) for trout 7, guppy 5.2 ppm.
Environmental fate:
Animals: DT50 in rats c. 10 h. Excreted in urine and faeces; two oxidative metabolic pathways.Plant:Selectivity and metabolism of simetryn reviewed (H. Matsumoto & K. Ishizuka, Weed Res. (Japan), 26, 1981). -
Transport InformationSignal Word:CAUTION; Hazard Class:III(Slightly hazardous)
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