Common nameí+: Paraquat
Chemical nameí+: 1,1'-Dimethyl-4,4'-bipyridinium; 1,1'-Dimethyl-4,4'-bipyridinium cation
Molecular formulaí+: C12H14N2
Molecular weightí+: 186.256
CASí+: 4685-14-7
Specificationí+: Content of a.i.:min , 42%Tk,V.P. : 1X10 -9 mm Hg ,Solubility( 20ípC): 620 g/l in water, Chemical Stability: It is stable in neutral and acidic medium but unstable in alkali condition. The hydrolysis speed is greatly in fluenced by temperature and alkalinity. Photostability: Decomposed by UV radiation in aqueous solution
í+Physical and chemical propertyí+: Colorless crystalline solid, Stable except under alkaline conditions. No measurable vapor pressure. Decomposes at approximately 300íµ. Sparingly soluble in lower alcohols, insoluble in hydrocarbons.
í+Toxicityí+: Paraquat dihloride
Acute oral LD50 for rats 150 mg/kg,for mece 104 mg/kg,for kogs 25-50 mg/kg,for sheep 70 mg/kg.Acute percutaneous LD50 for rabbits 236-500 mg paraquat ion/kg.Irritating to skin and eyes.absorption through intact human skin is minimal;exposures can cause irritation and a delay in the healing of cuts and wounds;can cause temporary damage to nails.If inhaled,may cause nose bleeding.Other has serious dealyed effects if absorbed.Fish toxicitty:TLM(48hrs.)is 62 ppm for rainbow trout,TLM(48 hrs.)is 40 ppm for carp.ADI 0.004 mg/kg b.w.
í+Usesí+: A broad-spectrum,quick-acting,non-selective contact herbicide used to control weeds and grasses in many agricultural and non-agricultural areas.It is used preplant or preemergence on vegetables, grains, cotton, grasses,sugar cane, peanuts, potatoes, and tree plantation areas; postemergence around fruit crops,vegetables,trees,vines,grains,soybeans,and sugar cane;Also used for general weed control on non-crop land,and as a defoliant for cotton and hops,and for control of aquatic weeds.
í+Packingí+: Technical:200kg/ Drum
í+Storage and transportationí+: No smoking,food or drink in work site..do not store or transport it with food,seeds,feeds,etc.Provent from moisture, sunshine, rain or freezing. .Keep away from fire. Stored in cool, good ventilation wearhouse.
It is a colorless-light yellowish viscous liquid at room temperature and easy soluble in h2o. It is of the excellent properties of wetting penetration, emulsion, dispersion and synergist. It can raise the activity of paraquat by decreasing the surface tension significantly, increasing the affixing ability between the drops of the liquid and the surface of the leans promoting the pesticide into the plant. It less using amount and good viscidity reduces the amount of paraquat and the cost of the pesticide. It is safe nontoxic and environment friendly. It is of the excellent properties of wetting penetration, emulsion, dispersion and synergist the standardize of environment
Paraquat - weedfast
Common name: paraquat
Cas no.: 1910-42-5
Molecular formula: c12h14n2.2cl
Activity: herbicide
Ingredient: 42% tc
Formulation: 20% sl
Mode of action:
Non-selective and quick-acting herbicide which kills a wide range of annual grasses and broad-leaved weeds and the tops of established perennial weeds.
It is redistributed within the plant, but does not harm mature bark. It becomes biologically inactive upon contact with soil.
It is also used as a defoliant on crops, like cotton, prior to harvest.
