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[Chemical Knowledge]：Properties and uses of industrial caustic soda

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Industrial caustic soda (sodium hydroxide, NaOH) is an important inorganic chemical raw material, which is widely used in the field of chemical production. This article will detail the nature and use of industrial caustic soda.

1. the properties of industrial caustic soda

1. Physical properties
industrial caustic soda is usually a white solid with high melting point, high boiling point and high corrosion. It can quickly absorb moisture and carbon dioxide from the air to form sodium carbonate and water.

2. chemical properties of
industrial caustic soda is a strong alkali, has a strong corrosive. It can react with acids, acidic oxides, salts and other compounds to generate the corresponding salts and water. In addition, caustic soda can also react with some metals to form hydrogen and the corresponding metal salts.

2. industrial caustic soda use

1. chemical production
industrial caustic soda in chemical production has a wide range of applications, mainly used in the manufacture of various chemical raw materials, such as chlorine, soda ash, bleaching powder, pesticides and so on. In addition, it can also be used as a catalyst, a decolorizing agent, etc.

2. Paper industry
In the papermaking process, industrial caustic soda is used to boil down wood fibers to improve the yield and quality of pulp. In addition, it can also be used to adjust the pH value of the pulp and promote the removal of impurities in the pulp.

3. Printing and dyeing industry
Industrial caustic soda is used as a fixing agent in the printing and dyeing process, which helps to improve the adsorption performance and color vividness of dyes.

4. Food industry
In the food industry, industrial caustic soda is mainly used to adjust the pH value of food, inhibit the growth of microorganisms, and extend the shelf life of food. In addition, it can also be used to make certain food additives, such as sour agents and preservatives.

5. environmental protection field
industrial caustic soda has a wide range of applications in the field of environmental protection, can be used to treat acidic wastewater, flue gas desulfurization. It can react with acidic substances, neutralize the acidity in wastewater, and reduce environmental pollution.

In short, industrial caustic soda has a wide range of uses in the field of chemical production raw materials, which is of great significance to promote the development of the chemical industry. In the process of using industrial caustic soda, it is necessary to pay attention to safe operation and avoid contact with skin and eyes to avoid damage.

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