Agent Name

Methomyl

Alternative Name

Lannate

CAS Number

16752-77-5

Formula

C5-H10-N2-O2-S

Major Category

Pesticides

Synonyms

Lannate; Metomil, Mesomile, Acinate, Agrinate, DuPont 1179, Flytek, Kipsin, Lanox, Memilene, Methavin, Methomex, Nudrin, NuBait, Pillarmate, SD 14999

Category

Carbamate Insecticides

Description

White, crystalline solid with a slight, sulfur-like odor. [insecticide]; [NIOSH]

Sources/Uses

Used to kill insects on vegetables, fruits, cotton, ornamentals, and field crops; also used in animal confinement areas and to kill ticks, spiders, and flies; [EXTOXNET]

Comments

Classified as "highly toxic," methomyl may be used only by certified applicators. The reentry interval is 1 to 7 days depending on the crop. [EXTOXNET] Allergic contact dermatitis reported in greenhouse workers; [Kanerva, p. 1812] TLV Basis: Acetycholinesterase inhibition; male reproductive damage; Hematologic effect; [ACGIH]

Reference Link

EXTOXNET PIP - METHOMYL

Exposure Assessment
BEI

Cholinesterase activity in red blood cells = 70% of individual's baseline, sampling time discretionary

Skin Designation (ACGIH)

Yes

TLV (ACGIH)

0.2 mg/m3, inhalable fraction and vapor

Vapor Pressure

5.0E-5 mm Hg

Reference Link

EPA Pesticide Chemical Search

Adverse Effects
Skin Sensitizer

Yes

Reproductive Toxin

Yes

Other Poison

Carbamate

ACGIH Carcinogen

Not Classifiable

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Biomedical References

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: