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[Chemical Knowledge]：Difference between liquid soda ash and caustic soda

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Liquid soda and caustic soda are commonly used chemical raw materials, and their differences lie in physical properties, preparation methods and application fields.

liquid soda ash, also known as molten soda ash, is a colorless and odorless liquid, chemical formula NaOH. It has high solubility and conductivity, and can absorb moisture. Liquid soda ash is widely used in glass manufacturing, textile industry, leather industry and other fields. It can be used as a cleaning agent for glass processing and can effectively remove dirt on the glass surface. In addition, liquid soda ash can also be used for textile pulp washing and leather hair removal and neutralization processes.

caustic soda, also known as solid soda ash, is a solid crystal, white granular, chemical formula NaOH. Compared with liquid soda ash, caustic soda has lower solubility and does not have the hygroscopic nature of liquid soda ash. Caustic soda is mainly used in soap manufacturing, paper industry, metallurgical industry and so on. In the soap manufacturing process, caustic soda is an important raw material, which can saponify with animal and vegetable oils to produce soap. In the paper industry, caustic soda is used to bleach and remove impurities from pulp. In addition, caustic soda can also be used for ore extraction and neutralization of acid media. In addition to the differences in physical properties and application areas of

, there are also differences in the preparation methods of liquid soda ash and caustic soda. The preparation methods of liquid soda ash mainly include electrolysis, chlor-alkali and seawater purification. Among them, the electrolysis method is the most commonly used method for preparing liquid soda ash, which is obtained by electrolyzing saturated sodium chloride solution. The preparation methods of caustic soda are mainly chlor-alkali method, stone-alkali method and ammonia method. Among them, the chlor-alkali method is the most commonly used method of preparing caustic soda, by electrolytic sodium chloride solution to make caustic soda.

to sum up, the difference between liquid soda and caustic soda is mainly reflected in their physical properties, preparation methods and applications. Liquid soda ash is suitable for glass manufacturing, textile industry and leather industry, and can be used as cleaning agent, pulp lotion and depilatory agent. The caustic soda is suitable for soap manufacturing, paper industry and metallurgical industry, etc., mainly for saponification reaction, bleaching and removal of impurities and other processes. Understanding the difference between liquid soda ash and caustic soda can help to better select suitable raw materials and improve production efficiency and product quality.

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