sulfuric acid Purity ≥ 98.0% CAS NO 7664-93-9

Used in the metallurgical industry and metal processing In the metallurgical industry sector, especially the production process of non-ferrous metals requires the use of sulfuric acid. For example, when refining copper, zinc, cadmium, and nickel by electrolysis, the electrolyte requires the use of sulfuric acid. The refining of certain precious metals also requires sulfuric acid to dissolve and remove other metals. Before cold rolling, cold drawing and stamping processing in the steel industry, the iron oxide on the steel surface must be removed with sulfuric acid. Rolled sheets, cold-drawn seamless steel pipes and other steel products with higher quality requirements must be washed with sulfuric acid every time they are rolled. In addition, seamed steel pipes, thin iron sheets, iron wires, etc. must be pickled with sulfuric acid before being galvanized. In some metal machining processes, such as nickel plating, chromium plating and other metal parts, sulfuric acid is also needed to clean the surface rust. In the ferrous metallurgical enterprise sector, the steel that needs to be pickled generally accounts for about 5% to 6% of the total steel production, and the pickling of each ton of steel consumes about 98% of 30 to 50kg of sulfuric acid.