If soda ash used for food and medicinal soda ash, then it can be eaten, but excessive amounts should not be used. Industrial soda ash cannot be eaten. Soda ash is soda, and its scientific name is sodium bicarbonate. As an inorganic salt, soda ash is generally a white crystalline powder. The specific analysis is as follows:

1. The sodium ion in soda ash is one of the electrolytes that maintains normal functions of the human body and is generally considered non-toxic. However, excessive intake of soda ash may cause alkalosis and damage the liver. Sodium ions can cause fluid retention in the body and can also induce high blood pressure. When the temperature reaches above 50°C, soda ash will undergo a decomposition reaction, and the products include sodium carbonate, water and carbon dioxide gas. Therefore, in the field of food processing, the property of soda ash to release carbon dioxide is often used to make steamed buns, bread, biscuits, pastries and other foods to achieve a puffy effect. At the same time, sodium bicarbonate will remain after decomposition, which is one of the reasons why the finished product has an alkaline smell.
2. Medicinal soda can also be eaten, but as a medicine it should be taken according to the doctor's advice. For diseases such as hyperacidity, soda is a commonly used antacid, which can effectively neutralize excess gastric acid and relieve corresponding symptoms.
3. Industrial soda itself is non-toxic, but because it does not meet food standards in terms of purity and hygiene standards, and there is a risk of contamination with other chemicals during production and transportation, industrial soda powder cannot be eaten.

Industrial sodium bicarbonate (i.e. industrial baking soda) is an important chemical raw material and is widely used in many industrial fields. This article will introduce the characteristics, applications and related precautions of industrial sodium bicarbonate.

Industrial sodium bicarbonate is a white crystalline powder with the chemical formula NaHCO3. It has the following features:

1. Alkalinity: Industrial sodium bicarbonate has a certain alkalinity and can react with acidic substances to generate carbon dioxide, water and corresponding salts. This makes it play an important role in neutralization reactions, acid removal and PH adjustment.
2. Insoluble in alcohol: Industrial sodium bicarbonate is not easily soluble in alcohol solutions. This property is often exploited, for example in certain processes, by adding technical sodium bicarbonate to divert the reaction to form the desired product.
3. High temperature decomposition: Under high temperature, industrial sodium bicarbonate will undergo a decomposition reaction to produce carbon dioxide, water and sodium carbonate. This makes it valuable for applications in thermal energy storage, fire protection materials and roasting processes.

Industrial sodium bicarbonate has a wide range of applications. Here are some common uses:

1. Glass manufacturing: Industrial sodium bicarbonate is used as a flux in the glass manufacturing process, which can reduce the melting temperature of glass and promote melting and uniform distribution.
2. Food processing: Industrial sodium bicarbonate is used as a leavening agent in food processing, such as baked goods such as bread, biscuits and cakes. It can react with acids to produce carbon dioxide, making food expand and become soft.
3. Detergent: Industrial sodium bicarbonate is often used to prepare detergents, such as washing powder, dish soap, etc. It neutralizes calcium and magnesium ions in hard water and improves cleaning performance.
4. Sewage treatment: Industrial sodium bicarbonate can be used as a regulator in the sewage treatment process. It can neutralize and stabilize the PH value in sewage and reduce environmental pollution.
5. Metal cleaning: Industrial sodium bicarbonate can be used for metal surface cleaning and rust removal. It removes grease and oxides and restores a smooth finish to metal surfaces.