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Substance Name: Methomyl [ANSI:BSI:ISO]
RN: 16752-77-5
InChIKey: UHXUZOCRWCRNSJ-QPJJXVBHSA-N

Note

  • A carbamate insecticide with anticholinesterase activity.

Molecular Formula

  • C5-H10-N2-O2-S

Molecular Weight

  • 162.212
 

Classification Codes

Classification Codes

  • Acaricide
  • Agricultural Chemical
  • Cholinergic Agents
  • Cholinesterase Inhibitors
  • Enzyme Inhibitors
  • Insecticide
  • Insecticides
  • Mutation Data
  • Nematocide
  • Neurotransmitter Agents
  • Pesticides

Superlist Classification Codes

  • Reportable Quantity (RQ) = 100 lb
  • Threshold Planning Quantity (TPQ) = 500/10000 lb
  • TWA (2.5 mg/m3); Not classifiable as a human carcinogen; BEI

Names and Synonyms

Results Name

  • Methomyl [ANSI:BSI:ISO]

Name of Substance

  • Methomyl
  • Methomyl [ANSI:BSI:ISO]

MeSH Heading

  • Methomyl

Synonyms

  • 1-(Methylthio)acetaldehyde O-methylcarbamoyloxime
  • 1-(Methylthio)ethylideneamino methylcarbamate
  • 2-Methylthio-acetaldehyd-O-(methylcarbamoyl)-oxim
  • 2-Methylthio-acetaldehyd-O-(methylcarbamoyl)-oxim [German]
  • 2-Methylthio-propionaldehyd-O-(methylcarbamoyl)-oxim
  • 2-Methylthio-propionaldehyd-O-(methylcarbamoyl)-oxim [German]
  • 3-Thiabutan-2-one, O-(methylcarbamoyl)oxime
  • Acetimidothioic acid, methyl-, N-(methylcarbamoyl) ester
  • AI3-27341
  • BRN 2042050
  • Caswell No. 549C
  • Du Pont insecticide 1179
  • Dupont 1179
  • EINECS 240-815-0
  • ENT 27,341
  • EPA Pesticide Chemical Code 090301
  • Ethanimidothioic acid, N-(((methylamino)carbonyl)oxy)-, methyl ester (9CI)
  • HSDB 1736
  • IN 1179
  • Insecticide 1,179
  • Lannate
  • Lannate L
  • Lannate LV
  • Lanox 216
  • Lanox 90
  • Mesomile
  • Methomex
  • Methomyl
  • Methyl N-(((methylamino)carbonyl)oxy)ethanimidothioate
  • Methyl N-((methylcarbamoyl)oxy)thioacetimidate
  • Methyl O-(methylcarbamoyl)thiolacetohydroxamate
  • Methyl O-(methylcarbamyl)thiolacetohydroxamate
  • Metomil
  • Metomil [Italian]
  • N-(((Methylamino)carbonyl)oxy)ethanimidothioic acid methyl ester
  • N-((Methylcarbamoyl)oxy)thioacetimidic acid methyl ester
  • NU-Bait II
  • Nudrin
  • RCRA waste number P066
  • S-Methyl N-(methylcarbamoyloxy)thioacetimidate
  • SD 14999
  • WL 18236

Systematic Names

  • Acetimidic acid, N-((methylcarbamoyl)oxy)thio-, methyl ester (8CI)
  • Ethanimidothioic acid, N-(((methylamino)carbonyl)oxy)-, methyl ester
  • Ethanimidothioic acid, N-(((methylamino)carbonyl)oxy)-, methyl ester (9CI)
  • Methomyl

Superlist Names

  • Ethanimidothioic acid, N-(((methylamino)carbonyl)oxy)-, methyl ester
  • Lannate
  • Methomyl
  • RCRA waste no. P066

Registry Numbers

CAS Registry Number

  • 16752-77-5

System Generated Number

  • 0016752775

Structure Descriptors

InChI

1S/C5H10N2O2S/c1-4(10-3)7-9-5(8)6-2/h1-3H3,(H,6,8)/b7-4+

InChIKey

UHXUZOCRWCRNSJ-QPJJXVBHSA-N

Smiles

C(=N\OC(NC)=O)(\SC)C

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
bird - wild LD50 oral 10mg/kg (10mg/kg)   Toxicology and Applied Pharmacology. Vol. 21, Pg. 315, 1972.
chicken LD50 oral 28mg/kg (28mg/kg) LUNGS, THORAX, OR RESPIRATION: DYSPNEA

BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

SENSE ORGANS AND SPECIAL SENSES: LACRIMATION: EYE
Toxicology and Applied Pharmacology. Vol. 40, Pg. 1, 1977.
dog LD50 oral 20mg/kg (20mg/kg)   "Documentation of the Threshold Limit Values and Biological Exposure Indices," 5th ed., Cincinnati, OH, American Conference of Governmental Industrial Hygienists, Inc., 1986Vol. 6, Pg. 906, 1991.
duck LC50 inhalation 1890ppm (1890ppm)   Toxicology and Applied Pharmacology. Vol. 40, Pg. 1, 1977.
duck LD50 oral 15mg/kg (15mg/kg)   Shell Chemical Company.
guinea pig LDLo oral 15mg/kg (15mg/kg)   Toxicology and Applied Pharmacology. Vol. 40, Pg. 1, 1977.
monkey LDLo oral 40mg/kg (40mg/kg)   Toxicology and Applied Pharmacology. Vol. 40, Pg. 1, 1977.
mouse LD50 oral 10mg/kg (10mg/kg)   Journal of Agricultural and Food Chemistry. Vol. 26, Pg. 550, 1978.
pigeon LD50 oral 10mg/kg (10mg/kg)   ASTM Special Technical Publication. Vol. (680), Pg. 157, 1979.
quail LC50 inhalation 3680ppm (3680ppm)   Toxicology and Applied Pharmacology. Vol. 40, Pg. 1, 1977.
quail LD50 oral 23700ug/kg (23.7mg/kg)   ASTM Special Technical Publication. Vol. (680), Pg. 157, 1979.
rabbit LD50 skin 5880mg/kg (5880mg/kg)   Farm Chemicals Handbook. Vol. -, Pg. C199, 1991.
rat LC50 inhalation 77ppm/4H (77ppm) LUNGS, THORAX, OR RESPIRATION: DYSPNEA

BEHAVIORAL: TREMOR

SENSE ORGANS AND SPECIAL SENSES: LACRIMATION: EYE
Toxicology and Applied Pharmacology. Vol. 40, Pg. 1, 1977.
rat LD50 intraperitoneal 6290ug/kg (6.29mg/kg) BEHAVIORAL: TREMOR

BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

BEHAVIORAL: STRAUB TAIL
Environmental Toxicology and Pharmacology. Vol. 7, Pg. 119, 1999.
rat LD50 oral 14700ug/kg (14.7mg/kg)   Weisheng Dulixue Zazhi. Journal of Health Toxicology. Vol. 6, Pg. 37, 1992.
rat LD50 skin > 1600mg/kg (1600mg/kg)   World Review of Pest Control. Vol. 9, Pg. 119, 1970.
rat LD50 subcutaneous 9mg/kg (9mg/kg)   Toxicology and Applied Pharmacology. Vol. 25, Pg. 569, 1973.

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point 78 deg C   EXP
log P (octanol-water) 0.6 (none)   EXP
Water Solubility 5.80E+04 mg/L 25 EXP
Vapor Pressure 5.40E-06 mm Hg 25 EXP
Henry's Law Constant 1.97E-11 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 6.65E-12 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.