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Chemical Identification
Common Name
Flucarbazone-sodium
中文通用名
氟唑磺隆
IUPAC
sodium 4,5-dihydro-3-methoxy-4-methyl-5-oxo-N-{[2-(trifluoromethoxy)phenyl]sulfonyl}-1H-1,2,4-triazole-1-carboximidate
CAS
4,5-dihydro-3-methoxy-4-methyl-5-oxo-N-[[2-(trifluoromethoxy)phenyl]sulfonyl]-1H-1,2,4-triazole-1-carboxamide, sodium salt
CAS No.
181274-17-9
Molecular Formula
C12H10F3N4NaO6S
Molecular Structure
Category
Activity
Herbicide
Premix
Chlorsulfuron+flucarbazone-sodium
70DF. 
Premix Parters: atrazine; isoxaflutole; metosulam; metribuzin;
Physical Properties
Molecular weight:418.3; Physical form:Colourless, odourless, crystalline powder. Density:1.59 g/ml; Melting point:200 °C ( decomp.); Vapour pressure:<1 × 10-6 mPa (20 °C, calc.); Henry constant:<1 × 10-11 Pa m3 mol-1 (20 °C, calc.); Partition coefficient(n-octanol and water):logP = -0.89 ( pH 4), -1.85 ( pH 7), -1.89 ( pH 9), -2.80 (unbuffered) (all 20 °C); pKa:1.9; Solubility:In water 44 g/l ( pH 4-9, 20 °C).;
Toxicology
Oral:Acute oral LD50 for rats >5000 mg/ kg. Percutaneous:Acute percutaneous LD50 for rats >5000 mg/kg. Non-irritating to skin; slightly/moderately irritating to eyes (rabbits). Not a skin sensitiser (guinea pigs). Inhalation: LC50 (acute) for rats >5.13 mg/l. ADI:( JMPR) 0.04 mg/ kg b.w. [1997] ( JECFA evaluation).
Environmental Profile
Ecotoxicology: Algae: EC50 for Selenastrum capricornutum 6.4 mg/l.Bees:Non-toxic to honeybees.Birds:Acute oral LD50 for bobwhite quail >2000 mg/kg. Sub-acute dietary LC50 for bobwhite quail >5000 ppm.Daphnia: EC50 (48 h) >109 mg/l.Fish: LC50 (96 h) for bluegill sunfish >99.3, rainbow trout >96.7 mg/l.Worms: LC50 for earthworms >1000 mg/ kg.Other aquatic spp.: EC50 for Lemna gibba 0.0126 mg/l. Environmental fate: Animals:Almost completely excreted via faeces and urine within 48 h of oral administration to rats.Soil:Average soil DT50 17 d. Photolytic DT50 in soil and water >500 d. Not mobile in soil; in dissipation studies, no product residues detected below 30 cm.Plant:Extensively metabolised in wheat plants. The relevant residues for enforcement purposes are the parent compound and the N-desmethyl metabolite.
Transport Information
Signal Word:CAUTION; Hazard Class:III(Slightly hazardous)

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