In textile dyeing and production of rayon fabrics: Sodium Hydroxide decomposes pectins and waxes in raw fabric processing, helping to increase the gloss of finished fabrics. The color of the fabric is also improved.
In water treatment: Caustic soda is used as a catalyst to increase the pH of water to a level suitable for use. In addition, caustic soda is also required in the process of resin regeneration in ion exchange. People often worry about the mud and deposits in their water pipes, but thanks to the properties of caustic soda, it is no longer a big problem. Caustic soda can dissolve and neutralize the deposits in the water pipes and push them out.
In the paper industry: NaOH is indispensable to the processing and preliminary processing of wood, bamboo, etc. for paper production with Sulfate and Soda technology.
In the aluminum smelting industry: Caustic soda acts as a detergent to help clean ore.
In the detergent industry: Caustic soda is one of the substances that makes the process of fat removal faster and easier thanks to its ability of fat hydrolysis. Therefore, people often use NaOH to produce washing liquid and detergents.