1, Papermaking

Sodium hydroxide plays an important role in the papermaking industry. Due to its alkaline nature, it is used in the process of boiling and bleaching paper pages.

2, Food industry

Sodium hydroxide can be widely used in the following production processes: container cleaning process; The processing process of starch; The preparation process of carboxymethyl cellulose; The manufacturing process of sodium glutamate.

3, Water treatment

Sodium hydroxide is widely used in water treatment. In sewage treatment plants, sodium hydroxide can reduce the hardness of water through neutralization reactions. In the industrial field, it is a regenerating agent for ion exchange resin regeneration. Sodium hydroxide has strong alkalinity and relatively high solubility in water. Due to its liquid nature, caustic soda is easy to measure its dosage and is conveniently used in various fields of water treatment. Sodium hydroxide is used in the following topics in water treatment: eliminating the hardness of water; Adjust the pH value of water; Neutralizing wastewater; Regeneration of ion exchange resin; Eliminating heavy metal ions in water through precipitation.

4, Artificial fibers and textiles

In the textile industry, sodium hydroxide is used for fiber finishing and dyeing. Main use: Mercerizing treatment for corporate fiber manufacturing

5, Metallurgy

Sodium hydroxide is used to treat bauxite, which contains alumina, and aluminum metal is present in the alumina. Aluminum is the second most commonly used metal in the world. Sodium hydroxide is also used in the production of zinc alloys and zinc ingots.

6, Washing products

Sodium hydroxide has always been used for traditional daily use, and even today, soap, soap, and other types of washing products still account for about 15% of the demand for caustic soda.

7, Soap: The production of soap is an ancient and widespread use of caustic soda, which is used to neutralize fatty acids in the process of making soap

8, Detergent: Sodium hydroxide is used to produce various detergents, and even today's laundry detergent is made from a large amount of caustic soda. caustic soda is used to neutralize excess fuming sulfuric acid after sulfidation reaction.