Agent Name

Methyl trithion

CAS Number

953-17-3

Formula

C9-H12-Cl-O2-P-S3

Major Category

Pesticides

Synonyms

Carbophenothion methyl; Carbophenothion-methyl; Dimethyl p-chlorophenylthiomethyl dithiophosphate; ENT 25,599; ENT 25586; G-29288; Geigy G-29288; Methanethiol, ((p-chlorophenyl)thio)-, S-ester with O,O-dimethyl phosphorodithioate; Methyl carbophenothion; Methyltrithion; Methylcarbophenothion; O,O-Dimethyl-S-(p-chlorophenylthiomethyl)phosphorodithioate; Phosphorodithioic acid, S-(((4-chlorophenyl)thio)methyl) O,O-dimethyl ester; Phosphorodithioic acid, S-(((p-chlorophenyl)thio)methyl) O,O-dimethyl ester; R-1492; S-(((4-Chlorophenyl)thio)methyl) O,O-dimethylphosphorodithioate; S-(((p-Chlorophenyl)thio)methyl) O,O-dimethyl phosphorodithioate; Stauffer R-1492; Tri-Me; Trithion-methyl; [ChemIDplus]

Category

Organophosphate Insecticides

Description

Light yellow to amber liquid or solid; [HSDB] Light yellow to amber liquid with a stench; [MSDSonline]

Sources/Uses

Used as insecticide and acaricide for cotton, fruits, vegetables, and forage; [HSDB]

Comments

Moderately irritating to eyes; [HSDB] 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]

Restricted

No longer registered as a pesticide for use in the US; No reported commercial production in the US after 1973; [HSDB]

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

2.67E-5 mm Hg

Adverse Effects
Other Poison

Organophosphate

Links to Other NLM Databases
Health Studies

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Toxicity Information

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Chemical Information

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: