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Interaction of S-2,3,3-trichloroallyl N,N-diisopropylthiolcarbamate (Triallate) with Montmorillonite¹

ABSTRACT

Adsorption of S-2,3,3-trichloroallyl N,N-diisopropylthiolcarbamate (triallate) by montmorillonite saturated with various cations was studied by infrared spectroscopy. The coordination of triallate to the exchangeable cations on the clay occurred through the oxygen of the carbonyl group. The triallate-montmorillonite complexes were stable even on heating to 50C for 15 days, but when shaken with distilled water, the herbicide was completely displaced from the clay.

Key Words: herbicide-clay complex

¹ Contribution from the Research Station, Canada Dep. Agr., Regina (Sask.), Canada. The technical assistance of G. W. Babish is much appreciated.

² Research Soil Scientist.

Received for publication October 3, 1972.