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[Chemical Knowledge]：Properties and uses of food grade caustic soda

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The properties and uses
of food grade caustic soda
in the field of chemical production raw materials, food grade caustic soda is a very important substance. It is also known as sodium hydroxide or caustic soda, which is an inorganic compound that is strongly corrosive and alkaline. Food grade caustic soda has many unique properties, so it has a wide range of applications in many different industries.

1. the nature of food grade flake alkali

1. strong alkaline: food grade flake alkali has a very strong alkaline, its pH value is usually between 12-14, can neutralize acidic substances.

2. Corrosion: Because of its strong alkalinity, food grade caustic soda is corrosive to many substances, including metals, plastics and glass.

3. Hygroscopicity: Food grade caustic soda has strong hygroscopicity and can absorb moisture in the air, so special attention is required when storing and using.

2. food grade caustic soda use

1. food processing: food grade caustic soda in food processing plays an important role. It can be used to adjust the pH value of food, control acidity, and improve the taste and preservation of food. At the same time, it can also be used to prepare food additives, such as caramel, pectin, etc.

2. Cleaner production: The strong alkaline and corrosive nature of food grade flake makes it a very effective cleaner. It can be used to produce various detergents, such as dishwasher detergents, floor cleaners, etc.

3. Paper industry: In the papermaking process, food grade flake alkali can be used to boil wood pulp and improve the strength and whiteness of paper. At the same time, it can also be used to adjust the pH value of the pulp and control the acidity of the paper.

4. Printing and dyeing industry: Food grade flake alkali can be used for desizing and scouring in the textile printing and dyeing process to improve the quality and color of the fabric.

In short, food grade caustic soda has a wide range of uses in the field of chemical production raw materials, but due to its strong alkalinity and corrosiveness, special attention should be paid to safety when used.

3. food grade caustic soda production and storage

1 production: food grade caustic soda production mainly by way of electrolytic salt water. In this process, the salt water is electrolyzed to produce hydrogen and chlorine gas, while forming sodium hydroxide solution. The food grade flake base can be obtained by concentrating, crystallizing and drying the sodium hydroxide solution.

2. Storage: Due to the hygroscopic and corrosive nature of food-grade caustic soda, special attention is required during storage. It should be stored in a dry, cool, ventilated place to avoid contact with acidic substances. At the same time, pay attention to safety during transportation and use, and avoid contact with skin and eyes.

4. food grade caustic soda safe use precautions

1. wear protective equipment: in the use of food grade caustic soda, should wear protective gloves, goggles and protective clothing and other protective equipment, to avoid contact with the skin, eyes and so on.

2. Maintain ventilation: In the process of using food-grade flake, you should maintain good ventilation and avoid inhaling alkaline gases.

3. Correct disposal of waste liquid: The waste liquid produced after the use of food grade flake alkali should be properly handled to avoid pollution to the environment.

In short, food grade caustic soda has a wide range of applications in the field of chemical production raw materials, but due to its strong alkalinity and corrosiveness, special attention should be paid to safety when using it. Only by correctly grasping its nature and use, and strictly abiding by the safety operation procedures, can we give full play to its role and ensure production safety.

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