Sodium hydroxide, also known as caustic soda, caustic soda, fire alkali, and flake alkali, is an inorganic compound with the chemical formula NaOH and a relative molecular weight of 39.9970.Sodium hydroxide is highly alkaline and extremely corrosive. The substance is a white solid state. Common forms include flakes, granules and liquids.It is easy to deliquescence and hygroscopic. When exposed to air, it absorbs moisture and reacts with carbon dioxide to form sodium carbonate.It is soluble in water and releases a lot of heat. The aqueous solution is strongly alkaline, soluble in ethanol and glycerin, but insoluble in ether and acetone.In industrial production, it is used in the manufacture of plastics, dyes, binders, acid neutralizers, compounding masking agents, sedimentation agents, sedimentation masking agents, color rendering agents, saponification agents, peeling agents, detergents, and is also used in bauxite dissolution, petroleum desulfurization and other processes.Its strong alkalinity is used as a bleaching agent, pipeline dredging agent and water treatment agent in the cleaning field, and it can also be used as a desiccant in chemical experiments, which is very widely used.

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Application Description

1.It is used in the production of papermaking and cellulose pulp; it is used in the production of soap, synthetic detergents, synthetic fatty acids, and the refining of animal and plant oils. 
2.It is used as a desulphurizing agent, cooking agent and mercerizing agent for cotton cloth in the textile printing and dyeing industry. 
3.The chemical industry is used to produce borax, sodium cyanide, formic acid, oxalic acid, phenol, etc.The petroleum industry is used to refine petroleum products and is used in oilfield drilling mud. 
4.It is also used in the production of alumina, metal zinc and metal copper surface treatment, as well as glass, enamel, tanning, medicine, dyes and pesticides.
5.Food-grade products are used as acid neutralizers in the food industry, as peeling agents for citrus, peaches, etc., as well as detergents for containers such as empty bottles and cans, as well as decolorizing agents and deodorizing agents. 
6.A widely used basic analytical reagent.Prepare standard lye for analysis.An absorber of a small amount of carbon dioxide and moisture.Acid neutralization.Sodium salt manufacturing.It is widely used in papermaking, chemical industry, printing and dyeing, medicine, metallurgy (aluminum refining), chemical fiber, electroplating, water treatment, exhaust gas treatment, etc.
7.It is used as a neutralizing agent, a compounding masking agent, a precipitating agent, a precipitating masking agent, and a color rendering agent for the determination of ketosterols by thin-layer analysis.It is used as a sodium salt preparation and saponification agent.It is used in the manufacture of various sodium salts, soaps, pulp, finishing cotton fabrics, silk, viscose fibers, regeneration of rubber products, metal cleaning, electroplating, bleaching, etc. 
8. In cosmetic creams, this product and stearic acid and other saponification act as emulsifiers, which are used to make snow cream, shampoo, etc.