Caustic soda is a basic chemical raw material, and together with soda ash, it is two kinds of alkali in "three acids and two alkalis". Mainly used in alumina, pulp, dye, chemical fiber, water treatment, food processing, wood processing, machinery industry and chemical industry. It is worth noting that among the futures varieties that have been listed at present, alumina, pulp and staple fiber can be regarded as the direct downstream varieties of caustic soda.

Alumina is the largest consumption industry of caustic soda, accounting for more than 30% of the caustic soda consumption market. At present, there is a night market in caustic soda futures. China is self-sufficient in caustic soda as a whole, with few imports, and is a net exporter. The main producing areas of caustic soda in China are located in Shandong, Inner Mongolia, Jiangsu, Xinjiang and Zhejiang, and the main selling areas are located in Shandong, Shanxi, Jiangsu, Henan, Guangxi, Zhejiang, Hebei and Guangdong.

The difference between caustic soda and soda ash

1, the difference between name and chemical formula

Soda Soda is sodium carbonate with the chemical formula NaCO；; Caustic soda is sodium hydroxide and its chemical formula is NaOH.

2, the difference between physical and chemical properties

Soda soda belongs to salts. Sodium carbonate containing ten crystals of water is colorless crystal, unstable and easy to weather, and becomes white powder Na2CO3. It is a strong electrolyte with salt universality and thermal stability, easily soluble in water, and its aqueous solution is alkaline.

Caustic soda is a kind of strong alkali, usually in flake or granular form, which is easily soluble in water (exothermic when dissolved in water) and forms an alkaline solution. In addition, it is deliquescent and easy to absorb water vapor in the air.

3, the difference in use

Soda soda is one of the important chemical raw materials, which is used to make chemicals, cleaning agents and detergents, as well as photography and pharmacy. Caustic soda is widely used in papermaking, soap, dyes, rayon, aluminum production, petroleum refining, cotton fabric finishing, coal tar product purification, food processing, wood processing and machinery industry.

Refer to the above content: Baidu Encyclopedia-Caustic Soda Futures