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Common NameBupirimate
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中文通用名乙嘧酚磺酸酯
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IUPAC5-butyl-2-ethylamino-6-methylpyrimidin-4-yl dimethylsulfamate
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CAS5-butyl-2-(ethylamino)-6-methyl-4-pyrimidinyl dimethylsulfamate
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CAS No.41483-43-6
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Molecular FormulaC13H24N4O3S
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Molecular Structure
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Category
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ActivityFungicide
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PremixHexaconazole+Bupirimate
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Physical PropertiesMolecular weight:316.4; Physical form:Pale tan, waxy solid. Density:1.2; Composition:Tech. is 90% pure. Melting point:50-51 °C; ( tech., c. 40-45 °C); Flash point:>50 °C; Vapour pressure:0.1 mPa (25 °C); Henry constant:1.44 × 10-3 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = 3.9; Solubility:In water 22 mg/l ( pH 5.2, 25 °C). Soluble in most common organic solvents except paraffins.; Stability:Stable in dilute alkalis, but readily hydrolysed by dilute acids. Rapidly decomposed by u.v. irradiation in aqueous solution. Unstable on prolonged storage above 37 °C.;
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ToxicologyOral:Acute oral LD50 for rats, mice, rabbits, and guinea pigs >4000 mg/kg. Percutaneous:Acute percutaneous LD50 for rats 4800 mg/kg. Mild eye irritant; slight to mild irritant to skin (rabbits). Moderate skin sensitiser (guinea pigs). Inhalation:No effect on rats exposed for 4 h to 0.035 mg respirable particles/l air. Phytotoxicity:Chrysanthemums, roses, strawberries, and some varieties of apple may suffer slight injury.
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Environmental ProfileEcotoxicology:
Bees: NOEL: 0.20 mg/bee (oral); 0.050 mg/bee (contact).Birds:Acute oral LD50 for quail >5200, pigeons >2700 mg/kg. Oral LC50 (5 d) for bobwhite quail and mallard ducks >10 000 mg/kg. Daphnia: LC50 (48 h) 7.3 mg/l.Fish: LC50 (96 h) for rainbow trout 1.4 mg/l.
Environmental fate:
Animals:In mammals, following oral administration, 68% of the dose is eliminated in the urine within 24 hours; 77% is eliminated in the urine and 21% in the faeces within 10 days.Soil:In soil, the major degradation product is ethirimol. Soil DT50 35-90 d (non-sterile flooded or non-flooded soils, pH 5.1-7.3). -
Transport InformationSignal Word:CAUTION; Hazard Class:III(Slightly hazardous)
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