Chemical Identification
Common Name
Paraquat
中文通用名
百草枯
IUPAC
1,1′-dimethyl-4,4′-bipyridinium
CAS
1,1′-dimethyl-4,4′-bipyridinium
CAS No.
4685-14-7
Molecular Formula
C12H14N2
Molecular Structure
Category
Activity
Defoliant/Desiccant
Premix
Paraquat+Diuron
DIQUAT DIBROMIDE+PARAQUAT DICHLORIDE
Granular, solid, soluble concentrate. 
Premix Parters: Bacillus subtilis metalaxyl; carboxin; carboxin metalaxyl; etridiazole; metalaxyl-M;
Physical Properties
Stable except under alkaline conditions. No measurable vapor pressure. Colorless crystalline solid decomposes at approximately 300°C. Sparingly soluble in lower alcohols, insoluble in hydrocarbons.Molecular weight:186.3;
Toxicology
(Rat): Oral LD50 150 mg/kg.ADI:(JMPR) 0.004 mg/ kg b.w. (as paraquat ion) [1986].
Environmental Profile
SOIL PARTICLE ADSORPTION: Strongly absorbed and inactivated by soil particles .WATER SOLUBILITY: Dichloride salt is freely soluble HAZARDS: Fish: Slightly toxic. Bird: Moderately toxic
Transport Information
Signal Word:DANGER-POISON; Hazard Class:Ia(Extremely hazardous)

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