Diquat

Diquat
Diquat dibromide
Identifiers
CAS number 85-00-7 YesY
PubChem 6794
ChemSpider 6536 YesY
UNII A9A615U4MP YesY
KEGG C18577 YesY
ChEMBL CHEMBL1599022 N
Jmol-3D images Image 1
Properties
Molecular formula C12H12Br2N2
Molar mass 344.05 g mol−1
 N (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Diquat is a contact herbicide that produces desiccation and defoliation most often available as the dibromide, diquat dibromide.[1] Brand names for this formulation include Aquacide, Dextrone, Preeglone, Deiquat, Detrone, Reglone, Reglon, Reglox, Ortho-Diquat and Weedtrine-D.[2]

Diquat is a non-selective herbicide that acts quickly to damage only that parts of the plant to which it is applied.[3] It breaks down quickly upon exposure to soil, leaving little residue.

Diquat dibromide is moderately toxic. It may be fatal to humans if swallowed, inhaled, or absorbed through the skin in sufficient quantities.[3]

Production

Pyridine is oxidatively coupled to 2,2'-bipyridine over a heated Raney nickel catalyst. The ethylene bridge is formed by the reaction with 1,2-dibromoethane:[4]

Synthesis of diquat dibromide.png

See also

References

  1. ^ Merck Index, 11th Edition, 3359.
  2. ^ PubChem listing for diquat dibromide
  3. ^ a b EXTOXNET, Pesticide Information Project
  4. ^ "Paraquat and Diquat". IPCS INCHEM. http://www.inchem.org/documents/ehc/ehc/ehc39.htm. 

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Look at other dictionaries:

  • Diquat — Cation diquat Général Nom IUPAC 6,7 dihydrodipyrido[1,2 a:2 ,1 c]pyrazinediylium No CAS …   Wikipédia en Français

  • diquat — noun Etymology: di + quaternary Date: 1960 a powerful herbicide and plant desiccant C12H12Br2N2 used especially to control aquatic weeds and to desiccate aerial plant parts (as of potatoes) before harvesting …   New Collegiate Dictionary

  • diquat — /duy kwot/, n. a yellow crystalline substance, C12H12Br2N2, used as a selective postemergence herbicide to control weeds on noncrop land and for aquatic weed control. [1955 60; DI 1 + QUAT(ERNARY)] * * * …   Universalium

  • diquat — noun A contact herbicide that produces desiccation and defoliation …   Wiktionary

  • Diquat — Di|quat [↑ di u. ↑ quat], das; s; Syn.: Deiquat: Common Name für eine tricycl., von ↑ Bipyridin durch Überbrückung abgeleitete heterocycl. Verb. mit zwei quartären N Atomen, die als Herbizid zur Anwendung kommt …   Universal-Lexikon

  • diquat — di·quat …   English syllables

  • diquat — ˈdīˌkwät noun ( s) Etymology: di + quat (II)ernary : a powerful nonpersistent herbicide and plant desiccant C12H12Br2N2 used especially to control aquatic weeds (as duckweed) and to desiccate aerial plant parts (as of potatoes) before harvesting …   Useful english dictionary

  • 2764-72-9 — Diquat Cation diquat Général Nom IUPAC 6,7 dihydrodipyrido[1,2 a:2 ,1 c]pyrazinediylium No CAS …   Wikipédia en Français

  • Diquatdibromid — Strukturformel Allgemeines Name Diquatdibromid Andere Namen …   Deutsch Wikipedia

  • Paraquat — This article is about the herbicide. For the British military operation to recapture South Georgia, see Operation Paraquat. Paraquat …   Wikipedia

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