Agent Name

Ethion

Alternative Name

Nialate

CAS Number

563-12-2

Formula

C9-H22-O4-P2-S4

Major Category

Pesticides

Synonyms

Nialate; AC 3422; Bis(S-(diethoxyphosphinothioyl)mercapto)methane; Diethion; Embathion; Ethanox; Ethiol 100; Ethodan; Ethopaz; Ethyl methylene phosphorodithioate; FMC-1240; Fosfatox E; Fosfono 50; Hylemox; KWIT; Methyleen-S,S'-bis(O,O-diethyl-dithiofosfaat) [Dutch]; Methylene-S,S'-bis(O,O-diaethyl-dithiophosphat) [German]; Niagara 1240; Nialate; O,O,O',O'-Tetraaethyl-bis(dithiophosphat) [German]; O,O,O',O'-Tetraethyl S,S'-methylene bisphosphorodithioate; O,O,O',O'-Tetraethyl S,S'-methylene di(phosphorodithioate); O,O,O',O'-Tetraethyl S,S'-methylenebis(phosphorodithioate); O,O,O',O'-Tetraethyl S,S'-methylenebisphosphordithioate; O,O,O',O'-Tetraethyl-S,S'-methylenebisphosphorodithioate; O,O,O,O-Tetraethyl S,S'-methylenebis(dithiophosphate); Phosphorodithioic acid, O,O-diethyl ester, S,S-diester with methanedithiol; Phosphotox E; RP 8167; Rhodocide; Rodocid; S,S'-Methylen-bis(O,O-diaethyl-dithiophosphat) [German]; S,S'-Methylene O,O,O',O'-tetraethyl di(phosphorodithioate) (8CI); S,S'-Methylene O,O,O',O'-tetraethyl phosphorodithioate; S,S'-Methylene bis(O,O-diethyl phosphorodithioate); Tetraethyl S,S'-methylene bis(phosphorothiolothionate); Vegfru fosmite; [ChemIDplus]

Category

Organophosphate Insecticides

Description

Colorless to amber-colored, odorless liquid. [insecticide] [Note: A solid below 10 degrees F. The technical product has a very disagreeable odor.]; [NIOSH]

Sources/Uses

Used on greenhouse crops, lawns, turf, and citrus and apple crops; also used on cattle and dormant trees; [EXTOXNET]

Comments

Classified as "moderately toxic"; [EXTOXNET] 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]

Reference Link

EXTOXNET PIP - ETHION

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]

Skin Designation (ACGIH)

Yes

TLV (ACGIH)

0.05 mg/m3, inhalable fraction and vapor

Vapor Pressure

1.5E-6 mm Hg

Reference Link

ATSDR - ToxFAQs - Ethion

Adverse Effects
Other Poison

Organophosphate

ACGIH Carcinogen

Not Classifiable

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

Search TOXNET

Chemical Information

Search ChemIDplus

Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: