Detailed Product Description
Common name: Sulfosulfuron Chemical name: N-[[(4, 6-dimethoxy-2-pyrimidinyl)amino]carbonyl]-2-(ethylsulfonyl)imidazo[1, 2-α]pyridine-3-sulfonamide Molecular formula: C16H18N6O7S2 Chemical class: Pytimidinysulfonylurea herbicides CAS no.: 141776-32-1 Properties: Form: white odorless solid Melting point: 201.1-201.7oC Vapor pressure: 8.81 x 10-8MPa (25oC) Solubility in water: 17.6 (pH 5), 1,627 (pH 7), 482 (pH 9) (mg/l, 20oC) Solubility in solvents: in acetone 0.7, methanol 0.33, ethyl acetate 1.01, dichloromethane 4.35, xylene 0.16, heptane 0.01(in g/L, 20oC) Stability: stable <54oC for 14 days Toxicity: Acute oral LD50 for rats: >5,000mg/kg Acute dermal LD50 for rats: >5,000mg/kg Inhalation for rats LC50: practically non-toxic Non-irritating to skin, moderately irritating to eyes Ecotoxicology: Effects on aquatic organisms: rainbow trout >95mg/L, carp >91mg/L, bluegill sunlight >96mg/L, sheep head minnow 101mg/L (96h), daphnia EC50 >96mg/L (48h) Effects on bees: LD50 (contact) >30μg/bee, (dietary) >25μg/bee Effects on birds: bobwhite quail and mallard ducks LD50 >2,250mg/kg Effects on earthworms: LC50 >848mg/kg Environmental fate: The primary degradation pathway in soil is the hydrolytic cleavage of the sulfonylurea linkage to yield the corresponding sulfonamide and dimethoxypyrimidinamine. Photodegradation is also a mode of environmental dissipation Mode of action: Branched chain amino acid synthesis (ALS or AHAS) inhibitor Acts by inhibiting biosynthesis of the essential amino acid valine and isoleucine, hence stopping cell division and plant growth Selectivity derives from rapid metabolism in the crop Metabolic basis of selectivity in sulfonylureas Usage: Demonstrated activity for the control of annual broad-leaved weeds and grass weeds in cereals
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