Baking soda, also called fermented soda, is usually used when baking bread or cakes, which can make the fermentation more thorough and make the cake softer. It can also be used to brew beans and accelerate the expansion of beans.

The baking soda commonly used in baking is edible baking soda. Edible baking soda refers to soda ash (sodium carbonate) and baking soda (sodium bicarbonate) which are different from industrial alkali. Baking soda is a finished product after absorbing carbon dioxide from the solution or crystal of soda ash. Therefore, baking soda is also called edible alkali (powder) in some places. Baking soda is solid, round, white in color and easily soluble in water.

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Edible baking soda is mainly used as the generator of carbon dioxide in food, soft drinks and cold drinks, and also used in feed additives, medicine, chemistry, tanning, fire-fighting preparations, biological breeding, detergents, environmental desulfurization, sterilization and detoxification, bathing and health care industries.

Edible baking soda NaHCO3. properties: white powder or fine crystal, odorless, salty and soluble in water, but less soluble than sodium carbonate in water, slightly soluble in ethanol, and slightly alkaline in aqueous solution. It decomposes easily when heated. Slowly decompose in humid air.

Reference: Baidu Encyclopedia-Edible baking soda