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Paraquat

Paraquat
Paraquat
Molecular structure via molpic based on CDK
Physical properties
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186.25 g/mol [1]
Density1.24 g/cm3 [1]
AppearanceYellow solid [1]
OdorOdorless [1]
Melting pointColorless crystals; mp: 300 °C (decomposes); very soluble in water, slightly soluble in lower alcohols. Insoluble in hydrocarbons. Hydrolyzed by alkali. Inactivated by inert clays and anionic surfactants; corrosive to metal; non-volatile /Paraquat dichloride/ [1]
Boiling pointBoiling point (760 mm Hg): Decomposes at 175-180 °C (347-356 °F) [1]
DecompositionWhen heated to decomposition it emits toxic fumes of /nitric oxides/. [1]
SolubilityIn water, 6.2X10+5 mg/L at 20 °C [1]
1.7 [1]
Structural Identifiers
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C12H14N2+2 [1]
1-methyl-4-(1-methylpyridin-1-ium-4-yl)pyridin-1-ium [1]
C[N+]1=CC=C(C=C1)C2=CC=[N+](C=C2)C [1]
InChI=1S/C12H14N2/c1-13-7-3-11(4-8-13)12-5-9-14(2)10-6-12/h3-10H,1-2H3/q+2 [1]
InChIKeyINFDPOAKFNIJBF-UHFFFAOYSA-N [1]

Paraquat (also known as Paraquat, Paraquat ion, Paraquat dication, 1,1'-Dimethyl-4,4'-bipyridinium, Dimethyl viologen, Starfire, Methyl viologen, 4,4'-Bipyridinium, 1,1'-dimethyl-, Methyl viologen ion(2+) or N,N'-Dimethyl-4,4'-bipyridinium) is a neurotoxin substance of the pyridine class.

Chemistry

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Paraquat is a achiral mixture.

Pharmacology

Metabolism

Subjective effects []

See also []

External links []

References []

  1. National Center for Biotechnology Information. PubChem Compound Summary for CID 15939, Paraquat. Accessed April 29, 2026. https://pubchem.ncbi.nlm.nih.gov/compound/15939

  2. U.S. Food and Drug Administration; National Center for Advancing Translational Sciences. Paraquat. UNII: PLG39H7695. Global Substance Registration System. Accessed April 29, 2026. https://gsrs.ncats.nih.gov/ginas/app/beta/substances/PLG39H7695