-  Chemical formulais NaOH and is one of the most important alkaline chemicals in the chemical industry. It is most widely used in the artificial fiber and chemical industries, and its range of use is very wide, such as used in petroleum refining, pulp, textile, and rubber industries.

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-  Concentration: less than 5%, 25%, 33%, 50%, 98%

- It is a colorless, odorless, tasteless, water-soluble liquid made by dissolving urea in water, and is a non-flammable, non-toxic chemical. Mainly viaFor cars using  exhaust gasAir pollutants included in  nitrogen oxideused to remove In addition, it is used for the purpose of reducing nitrogen oxides in some processes in the petrochemical, steel, cement, and power generation industries.

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- Concentration: 32.5%, 40%

- It is used as a disinfectant to kill spoilage bacteria or pathogens in food. It is used for beverages, vegetables and fruits, containers, utensils, and tableware.

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- Concentration : 12%

- Sulfuric acid, which is odorless, colorless, and highly viscous liquid, absorbs moisture well and dissolves well in water. Corrosion by sulfuric acid is due to strong acid, and even in normal concentrations, it is very dangerous if it comes into contact with the skin. 

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- Concentration: 9%, 70%, 98%, etc.