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1. The property of hydrochloric acid to react with poorly soluble bases to prepare daily necessities such as toilet bowls and rust removers. 2. Hydrochloric acid is a strong inorganic acid and has a wide range of applications in industrial processing, such as metal refining. Hydrochloric acid often determines the quality of the product. 3. One of the most important uses of hydrochloric acid is pickling steel. The surface rust or iron oxide can be reacted with hydrochloric acid before subsequent treatment of iron or steel (extrusion, rolling, galvanizing, etc.).
4. Hydrochloric acid also has many small-scale uses, such as leather processing, salt production, and in the construction and petroleum industries.