Agent Name

Methiocarb

CAS Number

2032-65-7

Formula

C11-H15-N-O2-S

Major Category

Pesticides

Synonyms

3,5-Dimethyl-4-(methylthio)phenol methylcarbamate; 3,5-Dimethyl-4-(methylthio)phenyl methylcarbamate; 3,5-Dimethyl-4-methylmercaptophenyl-N-methyl-carbamate; 3,5-Dimethyl-4-methylthiophenyl N-methylcarbamate; 3,5-Xylenol, 4-(methylthio)-, methylcarbamate; 4-(Methylthio)-3,5-xylyl methylcarbamate; 4-Methylmercapto-3,5-dimethylphenyl N-methylcarbamate; 4-Methylmercapto-3,5-xylyl methylcarbamate; 4-Methylthio-3,5-dimethylphenyl methylcarbamate; B 37344; BAY 37344; BAY 5024; BAY 9026; Bayer 37344; Carbamic acid, N-methyl-, 4-(methylthio)-3,5-xylyl ester; Carbamic acid, methyl-, 3,5-dimethyl-4-(methylthio)phenyl ester; Carbamic acid, methyl-, 4-(methylthio)-3,5-xylyl ester; Certan; DCR 736; Draza; ENT 25,726; Grandslam; H 321; Lizetan; Mercaptodimethur; Mercaptodimethur [ISO]; Mesurol; Mesurol phenol; Methiocarbe [ISO-French]; Methyl carbamic acid 4-(methylthio)-3,5-xylyl ester; Metmercapturon; OMS-93; Phenol, 3,5-dimethyl-4-(methylthio)-, methylcarbamate; SD 9228; [ChemIDplus] UN2757

Category

Carbamate Insecticides

Description

Colorless or white solid; [HSDB]

Sources/Uses

Used as insecticide, acaricide, molluscicide, and bird repellent; [HSDB] Used as insecticide, acaricide, and molluscicide on lawns, turf, ornamentals, around buildings, in greenhouses, and in ginseng gardens (12-month preharvest interval so not considered a food use); [Reference #2]

Comments

May cause skin and mucous membrane irritation; [HSDB] No malformations in rats or rabbits at 10 mg/kg/day, but caused malformations in chickens and ducks; [REPROTOX] A reversible cholinesterase inhibitor; [CAMEO] May cause irritation; A cholinesterase inhibitor; Can be absorbed through skin; A lachrymator; Effects in high-dose animal studies include convulsions; [MSDSonline] Contact dermatitis reported in a carnation grower; [Kanerva, p. 1812; PMID 9197969 ] See "CARBAMATE INSECTICIDES."

Reference Link

INCHEM JMPR: Methiocarb - 1998

Exposure Assessment
BEI

Acetylcholinesterase activity in red blood cells = 70% of individual's baseline; Butylcholinesterase activity in serum or plasma = 60% of individual's baseline; Sample at end of shift; [TLVs and BEIs]

Vapor Pressure

2.7E-7 mm Hg

Lethal Concentration

LC50 (rat) = 430 mg/m3

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Carbamate pesticide, solid, toxic."

Reference Link

EPA Pesticide Chemical Search

Adverse Effects
Skin Sensitizer

Yes

Lacrimator

Yes

Other Poison

Carbamate

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: