papermaking

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

food industry

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

water treatment

Sodium hydroxide is widely used in water treatment. In sewage treatment plants, sodium hydroxide can reduce the hardness of water through a neutralization reaction. In the industrial field, it is a regenerant for ion exchange resin regeneration. Sodium hydroxide is strongly alkaline and relatively soluble in water. Because caustic soda is in liquid state, it is easy to measure the dosage and it is conveniently used in various fields of water treatment. Sodium hydroxide is used in the following subjects in water treatment: elimination of water hardness; adjustment of pH value of water; neutralization of wastewater; regeneration of ion exchange resin; elimination of heavy metal ions in water by precipitation.

Man-made fibers and textiles

In the textile industry, sodium hydroxide is used for final treatment and dyeing of fibers. Main use: mercerized man-made fibers

metallurgy

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

Cleaning Products

Sodium hydroxide has been used for traditional life purposes, and until today, the demand for caustic soda in soaps, soaps and other types of washing products still accounts for about 15% of caustic soda.

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

Detergents: Sodium hydroxide is used to produce various detergents, and even today's laundry detergents are made from a large amount of caustic soda, which is used to neutralize excess oleum after the vulcanization reaction