Equation of sodium hydroxide and carbon dioxide: small amount: CO? :2NaOH+CO？ =Na？ CO？ +H？ O. Reaction phenomenon of sodium hydroxide and carbon dioxide: firstly, sodium carbonate is generated, which is soluble in water and has no obvious phenomenon. When carbon dioxide is continuously introduced excessively, sodium bicarbonate is generated together with the generated sodium carbonate. If saturated solution is reached, white material will be precipitated.
Sodium hydroxide, also known as caustic soda, caustic soda and caustic soda, is an inorganic compound with the chemical formula of NaOH. Sodium hydroxide is strongly alkaline and corrosive, and can be used as acid neutralizer, complexing masking agent, precipitant, precipitation masking agent, color developing agent, saponifying agent, stripping agent, detergent, etc. , and is widely used.
August 26th, 2023: CSRC agreed to register caustic soda futures and options in Zhengzhou Commodity Exchange. In the next step, the CSRC will urge Zhengzhou Commodity Exchange to do a good job to ensure the smooth launch and steady operation of caustic soda futures and options.
Sodium hydroxide is corrosive to fiber, skin, glass and ceramics. When dissolved or diluted with concentrated solution, heat will be released; The neutralization reaction with inorganic acids can also generate a lot of heat and generate corresponding salts; React with metal aluminum, zinc, nonmetal boron, silicon, etc. Release chemicals to produce hydrogen; Disproportionation reaction with chlorine, bromine, iodine and other halogens.
application area
Sodium hydroxide is mainly used in papermaking, cellulose pulp production, soap production, synthetic detergent, synthetic fatty acid and animal and vegetable oil extraction. Textile printing and dyeing industry is used as desizing agent, scouring agent and mercerizing agent for cotton cloth. The chemical industry is used to produce borax, sodium cyanide, formic acid, oxalic acid, phenol and so on. Petroleum industry is used to refine petroleum products and drilling mud in oil fields.
It is also used for surface treatment of aluminum oxide, zinc metal and copper metal, as well as glass, enamel, tanning, medicine, dyes and pesticides. Food-grade products are used as acid neutralizer, peeling agent for oranges and peaches, detergent for containers such as empty bottles and cans, decoloring agent and deodorant in food industry.
When sodium hydroxide is used as an alkaline reagent, it can be used as a neutralizer, a complexing masking agent, a precipitating agent, a precipitation masking agent, an absorbent for a small amount of carbon dioxide and water, and a chromogenic agent for the determination of ketosterols by TLC. Widely used in the manufacture of various sodium salts, soaps, pulp, cotton fabrics, silk, viscose fiber finishing, rubber products regeneration, metal cleaning, electroplating, bleaching and so on.