The folk name of baking soda is baking soda, and its scientific name is sodium bicarbonate. Sodium bicarbonate is an inorganic salt, which is white crystalline powder, odorless, alkaline and soluble in water. It decomposes slowly in humid air or hot air to produce carbon dioxide, which is completely decomposed when heated to 270℃. In case of acid, it will decompose strongly to produce carbon dioxide.