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Herbicides

Paraquat

Chemical Name: 1,1'-dimethyl-4,4'-bipyridinium

Formula: C12H14N2

Molecular weight: 257.2

CAS No.: 4685-14-7

Structure:

Description:

Appearance: colourless,hygroscopic crystals.

Melting Point: decomposing at 300°C.

Vapour Pressure: Negligible.

Stability: 700,000 mg/L in water at 25°C easily soluble in water,slightly soluble in short-china alcohol, practically insoluble in most other-organic solvents.stability stable in neutral and acidic media, but readily oxidized in alaline media.Tech salts are corrosive to common metals.

Toxicity: Oral LD50 150 mg/kg, dermal LD50 ( rabbits) is greater than 236-325 mg/kg.

Specification: 42%TC,20%SL,24%EC

Uses: is quick touch-killing herbicide than lose activity in earth and without leaving toxicity in the soil. Widely applied to the weeding in gardens and woods. Also applied to cotton, sunflowers, soybeans etc.The controlling indexes of Paraquat Technical Concentrates.

 

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