Is e237 vegan?

E237 is the E-number for sodium formate, which is the sodium salt of formic acid. It functions primarily as a preservative and acidity regulator, serving to inhibit the growth of bacteria, yeasts, and molds. While its authorization as a direct food additive is limited in several regions, it can appear in certain specialty preserved foods, agricultural feeds, and food packaging materials.

Sodium formate is derived entirely through industrial chemical synthesis. It is manufactured by reacting carbon monoxide gas with solid sodium hydroxide under elevated pressure and temperature, or generated as a chemical byproduct during the synthesis of organic compounds such as pentaerythritol. The raw materials and reaction pathways involved are purely mineral and synthetic.

E237 is classified as vegan because no animal tissues, animal byproducts, or animal-derived processing aids are used at any stage of its production. Because its supply chain relies strictly on synthetic and mineral sources, the ingredient is suitable for a vegan diet.