Diquat
| Diquat dibromide | |
|---|---|
 |
|
|
6,7-Dihydrodipyrido[1,2-a:2',1'-c]pyrazinediium dibromide |
|
|
Other names
1,1'-Ethylene-2,2'-bipyridyldiylium dibromide |
|
| Identifiers | |
| CAS number | 85-00-7  |
| PubChem | 6794 |
| ChemSpider | 6536 |
| UNII | A9A615U4MP |
| KEGG | C18577 |
| ChEMBL | CHEMBL1599022  |
| Jmol-3D images | Image 1 |
|
|
|
|
| Properties | |
| Molecular formula | C12H12Br2N2 |
| Molar mass | 344.05 g mol−1 |
 (verify) (what is:  / ?)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]
[edit] 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]
[edit] See also
[edit] References
- ^ Merck Index, 11th Edition, 3359.
- ^ PubChem listing for diquat dibromide
- ^ a b EXTOXNET, Pesticide Information Project
- ^ "Paraquat and Diquat". IPCS INCHEM. http://www.inchem.org/documents/ehc/ehc/ehc39.htm.
|
||||||||||||||||||||||||||||||||
