Sodium Propionate is the sodium salt of propionic acid, serving as a highly effective antimicrobial preservative against molds and fungi. This white crystalline powder or granular material is odorless or has a slight acetic-butyric acid odor and is particularly valued in the baking industry for its superior solubility compared to calcium propionate. As a naturally occurring compound found in Swiss cheese, it provides a safe preservation solution that extends shelf life without compromising taste or texture in various food applications.