Methyl trithion
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]
Biomedical References
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-05 mm Hg
Adverse Effects
Other Poison
Organophosphate
Diseases, Processes, and Activities Linked to This Agent
Diseases
Occupational diseases associated with exposure to this agent:
Processes
Industrial Processes with risk of exposure: