Sodium propionate

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Sodium propanoate or sodium propionate is the sodium salt of propionic acid which has the chemical formula Na(C₂H₅C O O). This white crystalline solid is deliquescent in moist air.

Reactions

It is produced by the reaction of propionic acid and sodium carbonate or sodium hydroxide.

Uses

It is used as a food preservative and is represented by the food labeling E number E281 in Europe; it is used primarily as a mold inhibitor in bakery products. It is approved for use as a food additive in the EU,^[1] USA^[2] and Australia and New Zealand^[3] (where it is listed by its INS number 281).