professional agrochemical manufacturer
SinoHarvest products


Methomyl Specification

Active Ingredient 98% min.
Appearance colorless crystalline

Methomyl Physical And Chemical Properties

Chemical Name S-methyl N- ( methylcarbamoyloxy ) thioacetimidate
Empirical Formula C5H10N2O2S
CAS No. 16752-77-5
Molecular Weight 162.2
Structural Formula Methomyl structural formula
Melting point 78-79°C
Solubility 58g/kg in water, 1000g/kg in methanol, 730g/kg in acetone, 420g/kg in ethanol, 220g/kg in isopropanol, 30g/kg in toluene
Vapor pressure 6.65 mPa at 25°C
Acute oral LD50 17-24mg/kg (rat)

Methomyl Formulations

  90% SP, 24%SL

Methomyl Application


Methomyl is a broad spectrum carbamate insecticide; a fast acting anti-cholinesterase agent; and, a direct contact and stomach action poison. A plant systemic of high acute toxicity to mammals, it is non-cumulative and rapidly metabolized in both plants and animals to substances of lower toxicity.

Methomyl is particularly effective against organophosphorus resistant pests.

Methomyl is effective against a wide range of plant parasitic insects and stored product pests, such as heliothis armigera, heliothis assulta, pieris rapae, plutella xylostella, aphides, phytomyza atricormis on cotton, tobacco, orange vegetable and so on, especially those which are resistant to organophosphorus pesticides.

Methomyl is used most effectively as a foliar treatment of certain vegetable and fruit crop, field crops and commercial plantings of ornamentals.

Methomyl Toxicology Data

Table Of Content
  • Acute Oral Toxicity Study
  • Acute Dermal Toxicity Study
  • Acute Eye Irritation Study
  • Acute Skin Irritation Study
  • Skin Sensitization Test
  • Acute Inhalation Toxicity Study
  • Ames Test
  • Micronucleus Test
  • Delayed Neurotoxicity Study
  • Bone marrow micronucleus test
  • Spermatogonial Chromosome Aberration Test
  • Bacilius subtilis Repair Test
  • Acute Toxicity Study to Daphnia
  • Acute Fish Toxicity Study

Methomyl Material Safety Data Sheet (MSDS)

Table Of Content
  • chemical product and company identification
  • composition / information on ingredients
  • hazards identification
  • first aid measures
  • fire fighting measures
  • accidental release measures
  • handling and storage
  • exposure controls / personal protection
  • physical and chemical properties
  • stability and reactivity
  • toxicological information
  • ecological information
  • disposal considerations
  • transport information
  • regulatory information
  • other information

enquire Methomyl MSDS and Toxicology Data

Methomyl Quotation Form

Client Testimonial
" Instant assistance and professional support are what SinoHarvest is distinctive from the other agrochemical manufacturers and suppliers that we have been doing business with for more than 15 years. "

Chris Clock
Jadis Corporation, France

effective Web site developed by creARTive