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Chemical Identification
Common Name
Bensulfuron-methyl
中文通用名
苄嘧磺隆
IUPAC
methyl α-[(4,6-dimethoxypyrimidin-2-ylcarbamoyl)sulfamoyl]-o-toluate
CAS
methyl 2-[[[[[(4,6-dimethoxypyrimidin-2-yl)-amino]carbonyl]amino]sulfonyl]methyl]benzoate
CAS No.
83055-99-6
Molecular Formula
C16H18N4O7S
Molecular Structure
Category
CropUse
Uses of pre- or post-emergence control of broad spectrum of annual and perennial rice paddy weeds in wet-sown and transplanted rice crops.
Premix
Tribenuron-methyl+bensulfuron-methyl
Oxaziclomefone+clomeprop+bensulfuron-methyl
Mefenacet+Bensulfuron-methyl+Mesotrione
Mefenacet+Bensulfuron-methyl+Anilofos
Bensulfuron-methyl+thiobencarb
Bensulfuron-methyl+simetryn
Bensulfuron-methyl+quinclorac
Bensulfuron-methyl+Pyriminobac-methyl
Bensulfuron-methyl+propisochlor
Bensulfuron-methyl+propanil
Bensulfuron-methyl+Prometryn+Simetryn
Bensulfuron-methyl+prometryn+acetochlor
Bensulfuron-methyl+prometryn
Bensulfuron-methyl+Pretilachlor+Oxadiazon
Bensulfuron-methyl+pretilachlor+clomazone
Bensulfuron-methyl+pretilachlor
Bensulfuron-methyl+Penoxsulam+Cyhalofop-butyl
Bensulfuron-methyl+Penoxsulam
Bensulfuron-methyl+pendimethalin
Bensulfuron-methyl+napropamide
Bensulfuron-methyl+molinate
Bensulfuron-methyl+metsulfuron-methyl+acetochlor
Bensulfuron-methyl+metsulfuron-methyl
Bensulfuron-methyl+metolachlor
Bensulfuron-methyl+mefenacet+thiobencarb
Bensulfuron-methyl+mefenacet+alachlor
Bensulfuron-methyl+mefenacet+acetochlor
Bensulfuron-methyl+mefenacet
Bensulfuron-methyl+MCPA-sodium
Bensulfuron-methyl+isoproturon
Bensulfuron-methyl+glyphosate+butachlor
Bensulfuron-methyl+glyphosate
Bensulfuron-methyl+Fluroxypyr-meptyl
Bensulfuron-methyl+Fluoroglycofen-ethyl+Clodinafop-propargyl
Bensulfuron-methyl+fentrazamide
Bensulfuron-methyl+fenoxaprop-p-ethyl
Bensulfuron-methyl+dimepiperate
Bensulfuron-methyl+dicamba
Bensulfuron-methyl+daimuron+mefenacet
Bensulfuron-methyl+cinmethylin
Bensulfuron-methyl+carfentrazone-ethyl+clodinafop-propargyl
Bensulfuron-methyl+carfentrazone-ethyl
Bensulfuron-methyl+Butralin
Bensulfuron-methyl+butachlor+prometryn
Bensulfuron-methyl+butachlor+isoproturon
Bensulfuron-methyl+butachlor+acetochlor
Bensulfuron-methyl+butachlor
Bensulfuron-methyl+bispyribac-sodium
Bensulfuron-methyl+acetochlor
Dry flowable. Premix Parters: acifluorfen; acifluorfen sethoxydim; atrazine; bromoxynil; cyanazine 2,4-D; dicamba; dichlorprop-P; dichlorprop-P ioxynil; dichlorprop-P MCPA; flumetsulam thifensulfuron-methyl; haloxyfop-p-methyl; imazaquin; MCPA MCPB; mecoprop-P; propanil;
Physical Properties
Molecular weight:410.4; Physical form: White to pale yellow, odourless solid. Density:1.41; Composition:Tech. is 96.5%. Melting point:185-188 °C; Vapour pressure:2.8 ×10-9 mPa (25 °C); Henry constant:1.4×10-11 Pa m3 mol-1; Partition coefficient(n-octanol and water):logP = 2.45 (pH 1.5), 0.62 (pH 7) (both at 30 °C); pKa:5.2; Solubility:In water 2.9 (pH 5), 12 (pH 6), 120 ( pH 7), 1200 (pH 8) (all in mg/l, 25 °C). In acetone 1.38, acetonitrile 5.38, dichloromethane 11.7, ethyl acetate 1.66, hexane >0.01, ; Stability:Aqueous solutions are most stable under slightly alkaline conditions (pH 8), and slowly degrade under acidic conditions; DT50 11 d (pH 5), 143 d (pH 7) (25 °C). Soluble in methylene chloride, relatively soluble in acetonitrile, ethyl acetate, acetone, methanol.
Toxicology
Oral:Acute oral LD50 for rats >5000 mg/kg, mice >10,985 mg/kg. Percutaneous:Acute percutaneous LD50 for rabbits >2000 mg/kg. Non-irritant to skin and eyes. Inhalation:LC50 (4 h) for rats >7.5 mg/l air. ADI:0.2 mg/kg.  Nonmutagenic, noncarcinogenic.
Environmental Profile
Ecotoxicology: 
Bees:LD50 >12.5 mg/bee.Birds:Acute oral LD50 for mallard ducks >2510 mg/kg. Dietary LC50 (8 d) for bobwhite quail, mallard ducks >5620 mg/l.Daphnia: LC50 (48 h) >100 mg/l.Fish:LC50(96 h) for rainbow trout and bluegill sunfish >150 mg/l; LC50(48 h) for carp >1000 ppm.
Environmental fate: 
Animals:Almost completely biotransformed and rapidly excreted in urine and faeces of rats and goats.Soil:DT50 4-20 w on Flanagan and Keyport silt loam soils. In rice fields, DT50 in water averages 4-6 d.Plant:After uptake by rice, converted to a non-herbicidal metabolite. WATER SOLUBILITY: 2.9-1200 ppm at 25°C, pH 5-8
Transport Information
Signal Word:WARNING; Hazard Class:II (Moderately hazardous)

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