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Environmental fate & pathways

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The fate and behaviour of Potassium sorbate in the environment was investigated in various tests and by using modelling data. The test were conducts with Potassium sorbate as well as with Sorbic acid as a surrogate. Since the Sorbate anion is the environmental relevant one, and as the presence of Sorbic acid or Sorbate anion is pH dependent, all results summarized below can be extrapolated to Potassium sorbate.

The main compatement for the environmental fate of Potassium sorbate is the water phase. Modelling data indicate that almost 100% of the substance reaches the water phase. Potassium sorbate is not abiotically but very good biotically degradable. Its half-life in air is comparatively low, however, due to its low volatiliy, photolysis is a degradation pathway of minor importance as only a minimal fraction will reach the air. Its potential for adsorption is very low, thus it possessed a high potential for leaching into the groundwater body if applied to soil. Potassium sorbate has no potential to accumulate in the food chain, neither aquatic, nor terrestric.