Caustic Soda liquid or Liquid alkali, refers to sodium hydroxide in liquid form, also known as caustic soda or caustic soda. Due to different production processes, the concentration of caustic Soda liquid or liquid alkali in existing chlor alkali plants is usually 30-32% or 40-42%. Product Description 1. Widely used in paper making, synthetic detergent, soup, adhesive fiber, artificial silk and cotton goods in light textile industry. 2. Pesticides, dye, rubber, fertilizer in chemical industry. 3. Petroleum drilling, refining petroleum grease and purifier in petroleum industry. 4. National defense industry, mechanical industry, lumber industry, metallurgical, pharmaceutical industry, urban construction and so on.