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Common NameDimethametryn
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中文通用名异戊乙净
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IUPAC(RS)-N2-(1,2-dimethylpropyl)-N4-ethyl-6-methylthio-1,3,5-triazine-2,4-diamine
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CASN-(1,2-dimethylpropyl)-N′-ethyl-6-(methylthio)-1,3,5-triazine-2,4-diamine
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CAS No.22936-75-0
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Molecular FormulaC11H21N5S
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Molecular Structure
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Category
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ActivityHerbicide
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PremixPyrazosulfuron-ethyl+dimethametryn+esprocarb+pretilachlor
Dimethametryn+piperophos
Premix Parters: atrazine; imazaquin.
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Physical PropertiesMolecular weight:255.4. Physical form:Colourless crystals. Density:1.098 (20 °C); Melting point:65 °C; Vapour pressure:0.186 mPa (20 °C); Henry constant:9.5×10-4 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = 3.8 (unstated pH); pKa:4.1, weak base; Solubility:In water 50 mg/l (20 °C). In acetone 650, dichloromethane 800, hexane 60, methanol 700, n-octanol 350, toluene 600 (all in g/l, 20 °C).; Stability:No significant hydrolysis occurred during 28 days at pH 5-9 and 70 °C. Solubility at 20°C in acetone 650 g/l, dichlormethane 800 g/l, hexane 60 g/l, methanol 700 g/l, n-octanol 350 g/l, toluene 600 g/l.
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ToxicologyOral:Acute oral
LD50 for rats 3000 mg/kg. Percutaneous:Acute percutaneous LD50 for rats >2150 mg/kg. Non-irritant to skin; slight irritant to eyes (rabbits). Inhalation: 50 (4 h) for rats >5400 mg/m3. ADI:0.12 mg/ kg. -
Environmental ProfileEcotoxicology:
Bees:LC50 (48 h) (contact and ingestion) >100 μg/bee.Birds:Dietary LC50 (8 d) for Japanese quail >1000 ppm.Daphnia: LC50 0.92 mg/l.Fish: LC50 (96 h) for rainbow trout 5 mg/l, crucian carp 8 mg/l.
Environmental fate:
Animals:Metabolism of dimethametryn was found to proceed as for S-alkyl-s-triazines, mainly via N-dealkylation, S-oxidation and conjugation with reduced glutathione, side-chain hydroxylation, and via conjugation leading to S-WATER SOLUBILITY: 50 mg/l at 20°C. -
Transport InformationSignal Word:DANGER; Hazard Class:Ib (Highly hazardous)
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