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Bensulfuron methyl

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Bensulfuron methyl Basic information
Bensulfuron methyl Chemical Properties
  • Melting point:185-188°C
  • Density 1.4087 (rough estimate)
  • refractive index 1.6000 (estimate)
  • storage temp.  0-6°C
  • pka12.34±0.70(Predicted)
  • form neat
  • color White to pale yellow
  • Odorodorless solid
  • BRN 7447488
  • CAS DataBase Reference83055-99-6
  • EPA Substance Registry SystemBensulfuron-methyl (83055-99-6)
Safety Information
  • Hazard Codes Xi;N,N,Xi
  • Risk Statements 43-51/53
  • Safety Statements 2-24-37-61
  • RIDADR UN 3077 9/PG 3
  • WGK Germany 2
  • RTECS DG8733000
  • HS Code 29350090
  • ToxicityLD50 orl-rat: >5 g/kg NNGADV 16,343,91
Bensulfuron methyl Usage And Synthesis
  • UsesHerbicide.
  • DefinitionChEBI: The methyl ester of bensulfuron. An acetolactate synthase inhibitor, it is used as a herbicide for the control of a variety of both annual and perennial weeds in crops, particularly wheat and rice. It is not licensed for use within the UK.
  • Safety ProfileModerately toxic by ingestion.When heated to decomposition it emits toxic vapors ofNOx and SOx.
  • Metabolic pathwayBensulfuron methyl is metabolized by mammals and birds and the major metabolites identified include mono-O-demethylated and 5-hydroxylated bensulfuron methyl and 5-hydroxy-2-amino-3,5- dimethoxypyrimidine. As bird metabolites, cleavage of the pyrimidine ring of bensulfuron methyl is observed which results in two pyrimidine ring-opening metabolites. In rice plants, bensulfuron methyl undergoes rapid O-demethylation at one of the methoxy groups on the pyrimidine ring which will proceed through hydroxylation at the methyl group. Alcoholysis and hydrolysis of bensulfuron methyl (H1) involve mainly the breakdown of the urea moiety which leads to several degradation products, some of which are also identified as metabolites in mammals and plants.
Bensulfuron methyl Preparation Products And Raw materials
Bensulfuron methyl (83055-99-6)Related Product Information
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