Paraquat

1)Chemical name: 1,1'-dimethyl-4.4'-bipyridilium ion               
2)Commercial name:Paraquat

3) Molecular Formula : C₁₂H₁₄Cl₂N₂   

4) Molecular Weight: 257.16

5) Specification: 42%TC, 20%SL

6) Physical and chemical properties:

a.Appearance: White crystalline solids
b.Relative Density: 1.24-1.26 (20/20)
c.Melting Point: 300^oC
d.Vapor Pressure: <1.33×10-8kPa.   
e.Solubility: Freely soluble in water; Practically insoluble in hydrocarbons; Sparingly soluble       in lower alcohol.

7) Toxicity:       

a.Oral: LD50 rat (Acute): 112-150 mg/kg  
b.LD50 mice (Acute): 104 mg/kg   
c.Dermal: LD50 rat, 500 mg/kg     
d.LD50 rabbit: 204 mg/kg        

8) Functions: Paraquat is used to  control broad-leaved weeds and grasses, being less effective on deep rooted plants such as dandelions. It does not harm mature bark, and is thus widely used for weed control in fruit orchards and plantation crops, including coffee, cocoa, coconut, oil palms, rubber, bananas, vines, olives and tea, ornamental trees and shrubs and in forestry. Other uses include weed control in alfalfa, onion, leeks, sugar beet, asparagus. It is used for weed control on non-crop land and can be used as a defoliant for cotton and hops before harvesting. Paraquat is used as a desiccant for pineapples, sugar cane, soya beans and sunflower

9)Packing: Upon Request.