Dimethoate

Dimethoate
Names
Preferred IUPAC name
O,O-Dimethyl S-[2-(methylamino)-2-oxoethyl] phosphorodithioate
Other names
O,O-dimethyl S-methylcarbamoylmethyl phosphorodithioate
Phosphorodithioic acid, O,O-Dimethyl S-(2-(methylamino)-2-oxoethylyl)ester
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.000.437 Edit this at Wikidata
KEGG
UNII
  • InChI=1S/C5H12NO3PS2/c1-6-5(7)4-12-10(11,8-2)9-3/h4H2,1-3H3,(H,6,7) checkY
    Key: MCWXGJITAZMZEV-UHFFFAOYSA-N checkY
  • InChI=1/C5H12NO3PS2/c1-6-5(7)4-12-10(11,8-2)9-3/h4H2,1-3H3,(H,6,7)
    Key: MCWXGJITAZMZEV-UHFFFAOYAB
  • O=C(NC)CSP(=S)(OC)OC
Properties
C5H12NO3PS2
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
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
Highly toxic
GHS labelling:
GHS07: Exclamation mark[1]
H302, H312[1]
P280[1]
Flash point 107 °C (225 °F; 380 K)
Safety data sheet (SDS) External MSDS
Related compounds
malathion
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

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] One of the breakdown products of dimethoate is omethoate, a potent cholinesterase inhibitor, is ten times more toxic than its parent compound.[3]

  1. ^ a b c Sigma-Aldrich Co., Dimethoate.
  2. ^ Dauterman WC, Viado GB, Casida JE, O'brien RD (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. ^ Cite error: The named reference :3 was invoked but never defined (see the help page).