The main uses of sodium bicarbonate are:

1. Pharmaceutical industry: Sodium bicarbonate can be directly used as the raw material of pharmaceutical industry to treat hyperacidity.

2. Food processing: In food processing, it is the most widely used loosening agent, used to produce biscuits, bread, etc., and is the generator of carbon dioxide in soft drinks; It can be compounded with alum to form alkaline baking powder, and can also be compounded with soda ash to form civil caustic soda; It can also be used as a butter preservative.

3. Fire fighting equipment: used to produce acid-base fire extinguishers and foam fire extinguishers.

4. It can be used in rubber and sponge production in rubber industry; It can be used as flux for casting steel ingots in metallurgical industry; It can be used as a molding aid for cast steel (sand casting) sand mold in machinery industry.

5. It can be used as fixing agent for dyeing and printing, acid-base buffer and post-treatment agent for fabric dyeing and finishing in printing and dyeing industry; Adding baking soda in dyeing can prevent the yarn tube from producing colored flowers; The pharmaceutical industry is used as raw material for acid-making agent; It can also be used as a detergent for wool and for agricultural seed soaking.

chemical properties of sodium bicarbonate:

sodium bicarbonate is stable at room temperature, easily decomposed when heated, rapidly decomposed above 5℃, completely lost carbon dioxide at 27℃, unchanged in dry air, and slowly decomposed in humid air.

sodium bicarbonate can react with both acid and alkali. React with acid to generate corresponding salt, water and carbon dioxide, and react with alkali to generate corresponding carbonate and water. In addition, it can react with some salts, and double hydrolyze with aluminum chloride and aluminum chlorate to produce aluminum hydroxide, sodium salt and carbon dioxide.

the above content reference: Baidu encyclopedia-sodium bicarbonate