Methiocarb

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 #1

Biomedical References

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]

2.7E-07 mm Hg

LC50 (rat) = 430 mg/m3

Explanatory Notes

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

Reference Link #2

Yes

Yes

Other Poison

Carbamate

Diseases

Occupational diseases associated with exposure to this agent:

• Contact dermatitis, allergic
• Organophosphates & carbamates, acute poisoning

Processes

Industrial Processes with risk of exposure:

• Farming (Pesticides)