Potassium sorbate E202 granules China. We sell Potassium Sorbate E202 - 25kg bags. Potassium sorbate - potassium salt of sorbic acid, is a natural preservative, almost odorless granules, neutral taste. Potassium sorbate is a preservative that actively inhibits yeast, mold fungi, some types of bacteria, and also inhibits the action of enzymes.