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Common NameThiodicarb
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中文通用名硫双威
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IUPAC(3EZ,12EZ)-3,7,9,13-tetramethyl-5,11-dioxa-2,8,14-trithia-4,7,9,12-tetraazapentadeca-3,12-diene-6,10-dione
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CASdimethyl N,N′-[thiobis[(methylimino)carbonyloxy]]bis[ethanimidothioate]
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CAS No.59669-26-0
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Molecular FormulaC10H18N4O4S3
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Molecular Structure
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Category
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ActivityInsecticide, molluscicide
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PremixImidacloprid+thiodicarb
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Physical PropertiesMolecular weight:354.5; Physical form:Colourless crystals; (tech., pale tan crystals). Density:1.44 g/ml (20 °C); Composition:Tech. grade is 96% pure. Melting point:173-174 °C; Vapour pressure:5.7 mPa (20 °C); Henry constant:4.31 × 10-2 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = 1.62; Solubility:In water 35 mg/l (25 °C). In dichloromethane 150, acetone 8, methanol 5, xylene 3 (all in g/kg, 25 °C).; Stability:Stable at pH 6, rapidly hydrolysed at pH 9 and slowly at pH 3 ( DT50 c. 9 d). Aqueous suspensions are decomposed by sunlight. Stable up to 60 °C.;
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ToxicologyOral:Acute oral LD50 for rats 66 (in water), 120 (in corn oil), dogs >800, monkeys >467 mg/kg. Percutaneous:Acute percutaneous LD50 for rabbits >2000 mg/kg; slightly irritating to their eyes and skin. Inhalation: LC50 (4 h) for rats 0.32 mg/l air. ADI:0.009 mg/kg.
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Environmental ProfileEcotoxicology:
Bees:Moderately toxic to bees exposed to direct spray. No hazard to honeybees after spray residues have dried.Birds:Acute oral LD50 for Japanese quail 2023 mg/kg. Dietary LC50 for mallard ducks 5620 mg/kg diet.Daphnia: LC50 (48 h) 0.027 mg/l.Fish: LC50 (96 h) for bluegill sunfish 1.4, rainbow trout >3.3 mg/l.
Environmental fate:
Animals:In rats, rapidly degraded to methomyl, which was rapidly converted to methomyl methylol, oxime, sulfoxide and sulfoxide oxime. These unstable intermediates were converted to acetonitrile and CO2, which were eliminated primarily by respiration aSoil:Rapidly degraded in soils of various types, under both aerobic and anaerobic conditions, by hydrolysis and photolysis. The primary degradation products are methomyl and methomyl oxime. DT50 of thiodicarb in soil is 3-8 d, dependPlant:Major metabolites include thiodicarb methomyl, acetonitrile and CO2. -
Transport InformationSignal Word:WARNING; Hazard Class:II(Moderately hazardous)
Porduct NewsMore
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