Methomyl

InChI=1S/C5H10N2O2S/c1-4(10-3)7-9-5(8)6-2/h1-3H3,(H,6,8)
Key: UHXUZOCRWCRNSJ-UHFFFAOYSA-N
InChI=1/C5H10N2O2S/c1-4(10-3)7-9-5(8)6-2/h1-3H3,(H,6,8)
Key: UHXUZOCRWCRNSJ-UHFFFAOYAU

SMILES

CNC(=O)ON=C(C)SC

Properties

Chemical formula

C₅H₁₀N₂O₂SMolar mass162.20 Appearance White crystalline solid OdorSlight, sulfur-like Density1.2946 g/cm Melting point78 to 79 °C (172 to 174 °F; 351 to 352 K)

Solubility in water

58 g/L Vapor pressure0.00005 mmHg (25°C) Hazards Flash pointNoncombustible NIOSH (US health exposure limits):

PEL (Permissible)

none

REL (Recommended)

TWA 2.5 mg/m

IDLH (Immediate danger)

N.D.

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

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Methomyl is a carbamate insecticide introduced in 1966. It is highly toxic to humans, livestock, pets, and wildlife. The EU imposed a pesticide residue limit of 0,01 mg/kg for all fruit and vegetables.

Methomyl is a common active ingredient in commercial fly bait, for which the label instructions in the United States warn that "It is a violation of Federal Law to use this product in a manner inconsistent with its labeling." "Off-label" uses and other uses not specifically targeted at problem insects are illegal, dangerous, and ill-advised.