Description
Pyrithiobac-sodium is a post-emergence herbicide for the control of broad-leaved weeds in cotton and other crops. It has a high aqueous solubility, is non-volatile and, based on its chemical properties, it is very mobile and has high potential to leach to groundwater. It is generally moderately persistent in soil systems but tends to be non-persistent in aquatic systems. It has a low mammalian toxicity but may bioaccumulate.
Chemical Properties
The pure product is a white solid; melting point: 233.8-234.2°C (decomposition); vapor pressure: 4.80 *10^-9 Pa; distribution coefficient: LogP(20°C)= 0.6(pH 5), -0.84(pH 7). Solubility in water (20°C, g/l): 264(pH 5), 705(pH 7), 690(pH 9), 728(distilled water); solubility in other solvents (20°C, mg/l): acetone 812, methanol 270000, dichloromethane 8.38, n-hexane 10. It is stable in aqueous solvents at pH 5-9, 27°C for 32 days, and stable when heated and stored at 54°C for 15 days.
Uses
Pyrithiobacsodium can be used as pesticides of interest in agricultural crop.
Definition
ChEBI: Pyrithiobac-sodium is an organic molecular entity.
Mechanism of action
Pyrithiobac sodium acts on Acetolactate Synthase enzyme of the plant leaf and controls the growth of weeds and Quizalofop ethyl acts on acetyl-CoA carboxylase (ACCase) enzyme which stops the only grassy weed growth.
