E500 – Sodium carbonates
Acidity regulatorDescription
White, odorless powder or crystalline solid
Notes
Sodium carbonates refer to a group of sodium-based compounds that appear as white, odorless powders. The most common is sodium carbonate (washing soda) and sodium bicarbonate (baking soda), which are typically produced from a naturally occurring mineral called trona, or manufactured from salt and limestone through a well-established industrial process called the Solvay process. These compounds have been used in food preparation for centuries - baking soda, for instance, has been a kitchen staple since the 1800s. In food production, sodium carbonates serve two main functions: as leavening agents and acidity regulators. As leavening agents, they help baked goods rise by releasing carbon dioxide gas when they react with acids or heat, creating the light, fluffy texture in cakes, breads, and cookies. As acidity regulators, they help control the pH level of foods, ensuring proper taste, texture, and preservation. You'll find them in baking powders, self-rising flours, biscuits, cakes, processed cheese, and some beverages. These compounds are completely synthetic but are chemically identical to substances that occur naturally, making them suitable for all dietary preferences including vegan, vegetarian, halal, and kosher diets. They're recognized as safe by food authorities worldwide and have a long history of safe use. Sodium carbonates are some of the most familiar and widely accepted food additives, with baking soda being a common household item that many people use in their own cooking and baking.