Flake sodium hydroxide can be widely used in China’s papermaking, synthetic washing and soap, viscose, rayon and cotton textile industry development, pesticides, dyes, rubber and chemical research industrial technology, oil drilling, refining Petroleum enterprises and industries that refine petroleum oils and tars, as well as my country’s national defense technology industry, machinery and electronics industry, wood production and processing, metallurgical construction industry, pharmaceutical industry industry, and urban economic construction and society. Hydrogen peroxide manufacturers are mainly used for sterilization and external medical purposes, such as wound disinfection. The best ratio for testing blood: 6% hydrogen peroxide plus 0.005% methylene blue. Wuxi hydrogen peroxide with higher concentration (more than 10%) is used in textile, leather, paper, and wood manufacturing industries as bleaching and deodorizing agents. Hydrogen peroxide is also one of the components of hair dyes, and is also used as a material for synthesizing organic raw materials (catechol), medicine, metal surface treatment agent, polymerization initiator, etc. Can also be used as rocket propellant. Industrial hydrogen peroxide is another hydrogen oxide besides water. The viscosity is slightly higher than that of water, and the chemical properties are unstable. Generally, it is stored in the form of a 30% or 60% aqueous solution, and its aqueous solution is commonly known as hydrogen peroxide. Hydrogen peroxide has strong oxidizing properties and is weakly acidic. It is also used in the design and manufacture of chemicals, paper, soap and detergent, rayon and cellophane, processing bauxite to make alumina, and also used to improve the mercerization of textiles, water treatment, etc.

In chemical experiments, besides being used as a reagent, flaky sodium hydroxide can also be used as an alkaline desiccant because of its strong water absorption and deliquescence. Sodium hydroxide is widely used in the national economy, and many industrial sectors require sodium hydroxide. The sector that uses most sodium hydroxide is the manufacture of chemicals, followed by the manufacture of paper, aluminium, tungsten, rayon, rayon and soap. In addition, a large amount of caustic soda is also used in the production of dyes, plastics, chemical and organic intermediates, the regeneration of old rubber, the production of metallic sodium, the production of water electrolysis and inorganic salts, borax, chromium salts, manganese salts, phosphates, etc. . Industrial sodium hydroxide should meet the national standard GB209-2006; industrial sodium hydroxide should meet the national standard GB/T11199-89; chemical fiber sodium hydroxide should meet the national standard GB11212-89; consumption of sodium hydroxide should meet the national standard GB5175 -85. Carbon dioxide absorption in photosynthesis experiments.

In industry, sodium hydroxide is often referred to as “caustic soda” or “liquid caustic soda”. This is because the concentrated solution of sodium hydroxide splashes on the skin, eroding the epidermis and causing burns. It dissolves proteins and is highly irritating and corrosive (alkali burns are more difficult to heal than acid burns because it dissolves proteins). Instillation of 0.02% solution into rabbit eyes can cause corneal epithelial damage. Mice ld 50:40 mg/kg, rabbit ld 500 mg/kg. Dust irritates the eyes and airways, corrodes the nasal septum, overflows the skin, especially the mucous membranes, causes soft scabs and penetrates deep tissues, leaves scars after burns, penetrates into the eyes, not only damages the cornea, but also damages the deep tissues of the eyes. Taking it can cause gastrointestinal system burns, abdominal pain, membrane erosion, bloody diarrhea, and sometimes hoarseness, dysphagia, shock, gastrointestinal system perforation, and later gastrointestinal system stenosis. Due to its strong alkalinity, it will cause pollution to water bodies. Attention should be paid to plants and aquatic life.

Leave a Reply

Your email address will not be published. Required fields are marked *