1, edible alkali is also called soda ash, and its chemical name is sodium carbonate (Na2CO3), which is a strong alkaline substance with certain corrosiveness. In contrast, sodium carbonate is a common weakly alkaline substance, which is weak in alkalinity and non-corrosive.

2. Edible alkali is mainly used in food industry. For example, as a loosening agent, it can neutralize the sourness of dough, promote the softening of meat, neutralize the residual organic acids on vegetables, neutralize gastric acid, remove the smell of oil and grease, and remove oil stains. However, a large amount of edible alkali is harmful to human body. Sodium carbonate is widely used in detergent, dye, medicine and other fields.