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Common NameFomesafen
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中文通用名氟磺胺草醚
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IUPAC5-(2-chloro-α,α,α-trifluoro-p-tolyloxy)-N-mesyl-2-nitrobenzamide
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CAS5-[2-chloro-4-(trifluoromethyl)phenoxy]-N-(methylsulfonyl)-2-nitrobenzamide
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CAS No.72178-02-0
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Molecular FormulaC15H10ClF3N2O6S
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Molecular Structure
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Category
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ActivityIt may be applied pre-plant, pre-emergence or post-emergence for control or suppression of broadleaf weeds, grasses and sedges in soybeans.
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CropUse
leguminous crops
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Weed Spectrumbroadleaf weeds, grasses and sedges
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FormulationAE = Aerosol dispenser
SL = Soluble concentrate -
PremixMetolachlor+fomesafen
Fomesafen+Quizalofop-p-ethyl
Fomesafen+imazethapyr
Fomesafen+fluthiacet-methyl
Clomazone+Quizalofop-P-ethyl+Fomesafen
cymoxanil folpet; cymoxanil mancozeb; fenamidone; fluopicolide; folpet; mancozeb; metiram;
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Physical PropertiesMolecular weight:438.8; Physical form:White crystals. Density:1.61 (20 °C); Melting point:219 °C; Vapour pressure:<4 × 10-3 mPa (20 °C); Henry constant:<2 × 10-7 Pa m3 mol-1 ( pH 7, 20 °C); Partition coefficient(n-octanol and water):logP = 2.9 ( pH 1), <2.2 ( pH 4-10); pKa:2.83 (20 °C); forms water-soluble salts (e.g. fomesafen-sodium); Solubility:In pure water c. 50, <10 ( pH 1-2), 10 000 ( pH 9) (all in mg/l, 20 °C).; Stability:Stable in storage for at least 6 months at 50 °C. Decomposed by light. Stable at pH 3 and 11 (40 °C). Stable to aqueous photolysis for 32 d ( pH 7, 25 °C).;
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ToxicologyOral:Acute oral LD50 for male rats 1250-2000, female rats 1600 mg/ kg. Percutaneous:Acute percutaneous LD50 for rabbits >1000 mg/kg. Mild skin irritant; mild to moderate eye irritant (rabbits). Extreme skin sensitiser (Magnusson & Kligman test), not a skin sensitiser (ear/flank Stevens test, g Inhalation: LC50 (4 h) for male rats 4.97 mg/l. Phytotoxicity:Non-phytotoxic to soya beans and to other crops such as beans of the genus Phaseolus and the l
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Environmental ProfileEcotoxicology:
Algae: EC50 170 mg/l.Bees:Low oral and contact toxicity to bees. LD50 (oral) 50 mg/bee; (contact) >100 mg/bee.Birds:Acute oral LD50 for mallard ducks >5000 mg/kg. Dietary LC50 (5 d) for mallard ducks and bobwhite quail >20 000 mg/ kg.Daphnia: EC50< (48 h) 0.33 g/l.Fish: LC50 (96 h) for rainbow trout 170, bluegill sunfish 1507 mg/l.Worms: LC50 (14 d) >1000 mg/ kg.
Environmental fate:
Soil:In soil, degrades slowly under aerobic conditions, DT50 >6 mo, but degrades more rapidly under anaerobic conditions, DT50 <1-2 mo. Koc 34-164. PhotodegradatPlant:In soya beans, the diphenyl ether bond is rapidly cleaved to give inactive metabolites. -
Transport InformationSignal Word:WARNING; Hazard Class:II(Moderately hazardous)
Porduct NewsMore
US: North Dakota approves additional herbicide to manage resistant weeds in soybeans
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