Rice wine can be made without calcium propionate, because rice wine needs to be fermented without preservatives. Calcium propionate is a preservative.

Calcium propionate is a safe and reliable food and feed mildew inhibitor approved by the World Health Organization (WHO) and the Food and Agriculture Organization of the United Nations (FAO). Like other fats, calcium propionate can be absorbed by people and animals through metabolism, and it can provide necessary calcium for people and animals. This advantage is incomparable to other fungicides and is considered as GRAS.

Molecular weight 186.22, white flake crystals, or white particles or powder. It has a slight special smell and is easy to deliquesce in humid air. Monohydrate is a colorless monoclinic plate crystal. Soluble in water, slightly soluble in ethanol. It has a broad antibacterial effect on mold, yeast and bacteria, and can play an antiseptic role in bread and cakes. The lower the pH value, the higher the sterilization effect. Calcium propionate is almost non-toxic to human body. Used as antiseptic thorn in cosmetics, the maximum allowable concentration is 2% (calculated by propionic acid). Stored in a dry and cool warehouse, and protected from rain and moisture during storage and transportation. It is made by neutralizing propionic acid with calcium hydroxide.