Paraquat

Nomenclature

IUPAC name:1,1\'-dimethyl-4, 4\'-bipyridinediium dichloride; 1, 1\'-dimethyl-4,4\'-bipyridinium dichloride; 1, 1\'-dimethyl-4, 4\'-bipyridylium dichloride
Chemical abstracts name: 1,1\'-dimethyl-4, 4\'-bipyridinium dichloride
Other names: Methyl viologen
CAS RN: [1910-42-5]; [2074-50-2]bis(methyl sulfate)
EEC no.: 217-615-7

Applications

Biochemistry: During photosynthesis, superoxide is generated, which damages cellmembranes and cytoplasm.
Mode of action: It is a non-selectivecontact herbicide, absorbed by the foliage, with some translocation in thexylem.
Uses: Paraquat is used for the broad-spectrum control ofbroad-leaved weeds and grasses in fruit orchards (including citrus), plantationcrops (bananas, coffee, cocoa palms, coconut palms, oil palms, rubber, etc.),vines, olives, tea, alfalfa, onions, leeks, sugar beet, asparagus, ornamentaltrees and shrubs, in forestry, etc. It is also used for general weed control onnon-crop land; as a defoliant for cotton and hops; for destruction of potatohaulms; as a desiccant for pineapples, sugar cane, soya beans, and sunflowers;for strawberry runner control; in pasture renovation; and for control ofaquatic weeds. Paraquat is also used for the control of annual weeds, appliedat 0.4-1.0 kg/ha.
Formulation types: SL.

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