From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Dimethoate Structural Formulae .V.1.svg
IUPAC name
O,O-dimethyl S-[2-(methylamino)-2-oxoethyl] dithiophosphate
Other names
O,O-dimethyl S-methylcarbamoylmethyl phosphorodithioate
Phosphorodithioic acid, O,O-Dimethyl S-(2-(methylamino)-2-oxoethylyl)ester
3D model (JSmol)
ECHA InfoCard 100.000.437
Molar mass 229.26 g/mol
Appearance Grey-white crystalline solid
Density 1.3 g/cm3, solid
Melting point 43 to 45 °C (109 to 113 °F; 316 to 318 K)
Boiling point 117 °C (243 °F; 390 K) at 10 Pa
2.5 g/100 ml
Main hazards Highly toxic
Safety data sheet External MSDS
GHS pictograms GHS07: Harmful[1]
H302, H312[1]
Flash point 107 °C (225 °F; 380 K)
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is ☑Y☒N ?)
Infobox references

Dimethoate is a widely used organophosphate insecticide and acaricide. It was patented and introduced in the 1950s by American Cyanamid. Like other organophosphates, dimethoate is an acetylcholinesterase inhibitor which disables cholinesterase, an enzyme essential for central nervous system function. It acts both by contact and through ingestion. It is readily absorbed and distributed throughout plant tissues, and is degraded relatively rapidly.[2]

Fruit Fly Control Efforts[edit]

The Queensland fruit fly, or Bactrocera Tyroni, is a tephritid fly species that has caused more than $28.5 million a year in damage to Australian fruit crops. In order to combat infestation, farmers treated crops with dimethoate and fenthion. However, the use of these chemicals was banned in 2011 due to safety concerns.[3]

Trade names[edit]


  1. ^ a b c Sigma-Aldrich Co., Dimethoate. Retrieved on 2013-07-20.
  2. ^ Dauterman, W. C.; Viado, G. B.; Casida, J. E.; O'Brien, R. D. (1960). "Insecticide Residues, Persistence of Dimethoate and Metabolites Following Foliar Application to Plants". Journal of Agricultural and Food Chemistry. 8 (2): 115–9. doi:10.1021/jf60108a013.
  3. ^ Lloyd, Annice C.; Hamacek, Edward L.; Kopittke, Rosemary A.; Peek, Thelma; Wyatt, Pauline M.; Neale, Christine J.; Eelkema, Marianne; Gu, Hainan (May 2010). "Area-wide management of fruit flies (Diptera: Tephritidae) in the Central Burnett district of Queensland, Australia". Crop Protection. 29 (5): 462–469. doi:10.1016/j.cropro.2009.11.003. ISSN 0261-2194.
  4. ^ Padmasheela, N. C.; Delvi, M. R. (2004). "Effect of Dimethoate (Rogor 30% EC) on the brain neurosecretory cells of third instar grubs of Oryctes rhinoceros L. (Coleoptera : Scarabaeidae)". Journal of Environmental Biology. 25 (4): 451–5. PMID 15907075.
  5. ^ https://www.ravensdown.co.nz/products/agrochemicals/rogor[full citation needed]

External links[edit]