Paraquat
= 1,1'-Dimethyl-4,4'-bipyridinium dichloride or bis(methyl sulfate) CAS[1910-42-5] UN2781
Trade name
Paraquat (J, I, A, B): Dextrone-X, Esgram, Gramoxone, Weedol
Chemical formula
C12H14Cl2N2(free), C12H14Cl2N2 (-2Cl), C14H20N2O8S2 (-2CH3SO4)
Purpose for use
Bipyridyl herbicide.
Mode of action
Radical formation.
Toxicity
LD50 (oral):
C12H14Cl2N2 (-2Cl): rat 150 mg/kg, mouse 104 mg/kg.
C14H20N2O8S2 (-2CH3SO4): rat (male) 210 mg/kg, (female) 307 mg/kg; mouse (male) 833 mg/kg, (female) 610 mg/kg.
Test organisms
Oligochaeta: Eisenia fetida (ref. ID; 6069)
Nematoda: Caenorhabditis elegans (ref. ID; 2165)
Microcosm (ref. ID; 7170)
[Paraquat Chloride]
Purpose for use
Herbicide.
Test organisms
Oligochaeta: Eisenia foetida (ref. ID; 7012)
[Paraquat Dichloride]
Test organisms
Oligochaeta: Eisenia andrei (ref. ID; 6831)
[Diquat]
= 1,1'-Ethylene-2,2'-bipyridyldiylium dibromide
Trade name
Diquat (J, I, A, B): Aquacide, diquat-dibromide, Reglone, Reglox
Chemical formula
C12H12N2 (free), C12H12Br2N (-Br)
Toxicity
LD50 (oral): rat 231 mg/kg, mouse 125 mg/kg.