Caustic soda, also known as caustic soda, its main chemical composition is sodium hydroxide, alkaline, strong water absorption, if directly placed in the air, can absorb the water in the air, delix into liquid sodium hydroxide, that is, liquid alkali. In solid state, caustic soda can be divided into tablet alkali, solid alkali and granular alkali.

Soda ash belongs to salts, the main component is sodium carbonate, soluble in water is alkaline, containing ten crystalline water sodium carbonate is colorless crystal, its crystal is unstable, easy to weather in the air, the formation of white powdered sodium carbonate.

Alkali tablet is widely used in industry, agriculture and other fields, such as: oil drilling, printing and dyeing industry, pesticide manufacturing, paper industry and synthetic washing, soap and so on. Caustic soda is more alkaline than caustic soda. For users with high alkaline requirements, caustic soda is undoubtedly better than caustic soda. Caustic soda can be used as a desiccant, absorb water molecules in the air ability is strong. Caustic soda is generally more expensive than caustic soda tablets.

Liquid alkali is the liquid form of sodium hydroxide, also known as caustic soda, caustic soda, the concentration of liquid alkali is usually 30-32% or 40-42%. In the instrument industry, it can be used as acid neutralizer, decolorizing agent and deodorizing agent. In adhesive industry used as starch gelatinizing agent, neutralizing agent.