Agent Name

Ethoate-methyl

CAS Number

116-01-8

Formula

C6-H14-N-O3-P-S2

Major Category

Pesticides

Synonyms

AC 18706; American cyanamid 18706; B/77; CL 18706; Dimethoate - ethyl; Dimethoate-ethyl; Dwutiofosforan S-N-etylokarbamylometylo-O,O-dwumetylowy [Polish]; EI-18706; ENT-25,506; Ethoate methyl; Etoat metylowy [Polish]; Fitios; Fitios B/77; N-Ethylamide of O,O-dimethyl dithiophosphorylacetic acid; N-Monoethylamide of O,O-dimethyldithiophosphorylacetic acid; O,O-Dimethyl S-(N-ethylcarbamoylmethyl) dithiophosphate; O,O-Dimethyl S-(N-ethylcarbamoylmethyl) phosphorodithioate; OMS 252; Phoshorothioic acid, S-(2-(2-ethylamino)-2-oxoethyl) O,O-dimethyl ester; Phosphorodithioic acid, O,O-dimethyl ester, S-ester with N-ethyl-2-mercaptoacetamide; Phosphorodithioic acid, S-(2-(ethylamino)-2-oxoethyl) O,O-dimethyl ester; S-((Ethylcarbamoyl)methyl) O,O-dimethylphosphorodithioate; S-(2-(Ethylamino)-2-oxoethyl) O,O-dimethyl phosphorodithioate; S-(N-Ethylcarbamoylmethyl) dimethyl phosphorodithioate; S-Ethylcarbamoylmethyl O,O-dimethyl phosphorodithioate; VEL 88; [ChemIDplus]

Category

Organophosphate Insecticides

Description

White solid; [HSDB]

Sources/Uses

Used as systemic insecticide and acaricide; Likely discontinued for pesticide use worldwide; [HSDB]

Comments

No toxic symptoms were observed in 50 day feeding study with rats at 300 ppm; [HSDB] Effects in high-dose animal studies include changes in liver weight and inhibition of true cholinesterase; [RTECS] The average of two baseline respective cholinesterase activity determinations three days apart, with no exposures to enzyme inhibiting pesticides for at least 30 days, is recommended for each worker prior to exposure to cholinesterase inhibitors because of large inter-individual differences in published baseline values. To be established at least once a year. Removal from workplace exposures is recommended until the cholinesterase activity returns to within 20% of baseline. [TLVs and BEIs]

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

9.25E-6 mm Hg

Adverse Effects
Other Poison

Organophosphate

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