Thiometon is the thion (P=S) analog of demeton-Smethyl.
It is a colorless oil, bp 104 ?C/0.3 mm Hg, vp
39.9 mPa (20 ?C). The water solubility is 200 mg/L (27 ?C).
It is highly soluble inmost organic solvents except alkanes.
Log Kow = 3.15. It is hydrolyzed in alkaline and acidic
media; DT50 (25 ?C) values at pH 3, 6, and 9 are 25, 27,
and 17 d, respectively.
용도
Thiometon is used to control sucking insects and mites on a wide
range of crops.
Safety Profile
Poison by ingestion, skin contact, inhalation, and intravenous routes. Mutation data reported. A skin and severe eye irritant. A cholinesterase inhibitor. When heated to decomposition it emits very toxic fumes of POx and SOx. See also ESTERS and PARATHION
신진 대사 경로
Thiometon is the thion (P=S) analogue of demeton-S-methyl. Consequently,
many of the biotransformations of hometon are similar
to those of demeton-S-methyl to which it is oxidised in animals. It is also
the dimethyl analogue of disulfoton. However, thiooxidation in soil
and plants appears to be more facile than oxidative desulfuration to
the oxon so that its metabolism is analogous to phorate and disulfoton
in that the compound is first thiooxidised to thiometon sulfoxide and
sulfone which are oxidatively desulfurated to oxydemeton-S-methyl and
demeton-S-methylsulfon respectively.
