Potassium propionate

Potassium propionate (CAS 327-62-8) is the potassium salt of propionic acid, commercially available under names including Kaliumpropionat and Struksilon KPROP 14. It functions as an antimicrobial preservative, inhibiting mould and bacterial growth by disrupting microbial cell metabolism at low concentrations.

In food and feed manufacturing, potassium propionate is used as a mould inhibitor in baked goods and grain-based animal feeds, where it controls fungal spoilage without the sodium load associated with sodium propionate. Its activity is most effective in slightly acidic conditions, making it suitable for pH-sensitive formulations.

Potassium propionate is supplied as a solid and is available in food-grade and feed-grade specifications, with compliance referenced against FCC and relevant REACH registration requirements. It is classified under HS code 2915500000. Procurement teams should confirm grade suitability against applicable EU feed and food additive regulations prior to sourcing.