Photochemical transformation of phosalone
- 1 January 1989
- journal article
- research article
- Published by Wiley in Pesticide Science
- Vol. 25 (1) , 1-9
- https://doi.org/10.1002/ps.2780250102
Abstract
The photodegradation of the insecticide phosalone has been investigated under UV and simulated solar light conditions. Irradiation of phosalone in solvents such as hexane and methanol yielded a new photoproduct, dechlorophosalone formed as a result of photodechlorination of phosalone. Irradiation in methanol afforded, besides the usual hydrolytic products, three new compounds: phosalone‐oxon; O,O‐diethyl S‐methyl phosphorodithioate; and 6‐chloro‐3‐methoxymethyl‐2‐oxobenzoxazoline. Photolysis of phosalone in the solid state as a thin film on a glass surface produced a number of photoproducts including two new compounds: 6‐chloro‐3‐mercaptomethyl‐2‐oxobenzoxazoline and its dimeric disulfide. Under controlled laboratory conditions, the half lifes of disappearance of phosalone in UV and simulated solar light were found to be 2.5 and 4.75 days on the soil surface and 4.75 and 8.5 days on the glass surface.This publication has 5 references indexed in Scilit:
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