See All ProductsMethomyl

Action

Insecticide

Use

Controls a wide range of foliar and soil-borne insects on fruits, cotton, soybeans, vegetables, and other field crops.

Formulation

Liquid, low volatility liquid, water-soluble powder.

Identification

Common Names

Methomyl (ANSI, ISO, BSI, JMAF, ESA); Méthomyl (F-ISO)

Exp. Code Numbers

SD 14999; DPX-X1179 (DuPont)

CAS Code

16752-77-5

Other Code Numbers

OMS 1196 (WHO); SHA 090301

Chemistry

Compositions

S-methyl (EZ)-N-(methylcarbamoyloxy)thioacetimidate (IUPAC); methyl N-[[(methylamino)carbonyl]oxy]ethanimidothioate (CAS)

Class

Carbamate.

Properties

White crystalline solid, with slightly sulfurous odor. Melting point 78°-79°C. Solubility in ethanol, 42 g/100 g; in methanol, 100 g/100 g. Soluble in ethanol, 42 g/100 g; in methanol, 100 g/100 g.

Molecular Formula

C5H10N2O2S

Mode of Action / Resistance Management

Chemical Group

carbamates

Mode of Action

Acetylcholinesterase (AChE) inhibitors

Action Group

IRAC Group 1A

Environmental Guidelines

Hazard

Fish: Toxic. LC50 3.4 mg/l (96 h) (rainbow trout) 0.8 mg/l (bluegill). Bee: Highly toxic

Soil Particle Adsorption

Half-life of 3-5 days following leaf application

Water Solubility

5.8 g/100 g

Safety Guidelines

Signal Word

DANGER

Toxicity Class

I

Toxicity

(Rat): Oral LD50 30 mg/kg (female), 34 mg/kg (male). (Rabbit): Dermal LD50 >2000 mg/kg. Inhalation (4 h), 0.3 mg/l

Protective Clothing

Approved respirator. Protective eyewear.