Fensulfothion

Fensulfothion is an organophosphorus compound with the formula CH₂S(O)C₆H₄OP(S)(OC₂H₅)₂. It is an insecticide and nematicide that acts by inhibiting the enzyme acetylcholinesterase. Chemically, it is classified as a thiophosphate.^[2] It is widely used on corn, onions, rutabagas, pineapple, bananas, sugar cane, sugar beets, pea nuts, etc.

Fensulfothion

Names
Preferred IUPAC name O,O-Diethyl O-[4-(methanesulfinyl)phenyl] phosphorothioate
Identifiers
CAS Number	115-90-2 Y
3D model (JSmol)	Interactive image
ChemSpider	7991
ECHA InfoCard	100.003.741
PubChem CID	8292
UNII	VB39B105PO Y
CompTox Dashboard (EPA)	DTXSID6021953
InChI InChI=1S/C11H17O4PS2/c1-4-13-16(17,14-5-2)15-10-6-8-11(9-7-10)18(3)12/h6-9H,4-5H2,1-3H3 Key: XDNBJTQLKCIJBV-UHFFFAOYSA-N InChI=1/C11H17O4PS2/c1-4-13-16(17,14-5-2)15-10-6-8-11(9-7-10)18(3)12/h6-9H,4-5H2,1-3H3 Key: XDNBJTQLKCIJBV-UHFFFAOYAH
SMILES S=P(Oc1ccc(cc1)S(=O)C)(OCC)OCC
Properties
Chemical formula	C11H17O4PS2
Molar mass	308.35 g·mol−1
Appearance	Brown liquid or yellow oil[1]
Density	1.20 g/mL (20°C)[1]
Solubility in water	0.2% (25°C)
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	combustible[1]
NIOSH (US health exposure limits):
PEL (Permissible)	none[1]
REL (Recommended)	TWA 0.1 mg/m3[1]
IDLH (Immediate danger)	N.D.[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Safety

It is highly toxic and listed as an extremely hazardous substance.^[3]